home.social

Search

37 results for “GregCocks”

  1. 💧🌏 Greg Cocks @[email protected] ·

    Global Groundwater Drought Recovery Patterns
    --
    uu.nl/en/news/global-groundwat <-- shared technical article
    --
    doi.org/10.1088/3033-4942/aea6 <-- shared paper
    --
    doi.org/10.1126/science.adu1370 <-- shared paper
    --
    H/T @Faculty of Geosciences (Utrecht University)
    “A few days of rain does not change the low groundwater levels after a long drought. To better determine how groundwater systems recover after a drought and which groundwater reserves are most vulnerable, [a] hydrologist… developed a method to classify groundwater systems based on their ability to recover from long drought. With a very high resolution global groundwater model (1 kilometre) it was possible to determine and analyse how a groundwater system responds during a drought and how quickly it can recover. This provides policymakers with the means to better respond to or prevent severe groundwater problems in the future…”
    --
    “[The author] investigated the various factors that make the groundwater recover or not after a period of drought by looking at a large range of groundwater drought events around the globe. Climate plays a major role, but at the local level the geology and landscape are additional important factors for drought recovery. Looking at these different drivers, [they were] able to make a classification in groundwater systems. It turned out that the majority of locations has resilient groundwater systems (57%), exhibiting rapid and robust recovery following droughts. Vulnerable (15%) and stable locations are shaped by geophysical constraints and heightened climate variability, whereas unstable regions (26%) are characterised by frequent, successive drought events leading to a reduced drought recovery capacity and strong impacts on the groundwater system…”
    #groundwater #drought #recovery #hydrology #waterresources #sustainability #global #patterns #spatialanalysis #spatiotemporal #spatial #mapping #watermanagement #precipitation #rainfall #extremeweather #pumping #extraction #watersecurity #water #hydrology #reserves #aquifer #climatechange #planning #policy #model #modeling #geology #landscape #systems #geophysics
    @utrechtuniversity

    #groundwater #drought #recovery #hydrology #waterresources #sustainability
  2. 💧🌏 Greg Cocks @[email protected] ·

    Global Groundwater Drought Recovery Patterns
    --
    uu.nl/en/news/global-groundwat <-- shared technical article
    --
    doi.org/10.1088/3033-4942/aea6 <-- shared paper
    --
    doi.org/10.1126/science.adu1370 <-- shared paper
    --
    H/T @Faculty of Geosciences (Utrecht University)
    “A few days of rain does not change the low groundwater levels after a long drought. To better determine how groundwater systems recover after a drought and which groundwater reserves are most vulnerable, [a] hydrologist… developed a method to classify groundwater systems based on their ability to recover from long drought. With a very high resolution global groundwater model (1 kilometre) it was possible to determine and analyse how a groundwater system responds during a drought and how quickly it can recover. This provides policymakers with the means to better respond to or prevent severe groundwater problems in the future…”
    --
    “[The author] investigated the various factors that make the groundwater recover or not after a period of drought by looking at a large range of groundwater drought events around the globe. Climate plays a major role, but at the local level the geology and landscape are additional important factors for drought recovery. Looking at these different drivers, [they were] able to make a classification in groundwater systems. It turned out that the majority of locations has resilient groundwater systems (57%), exhibiting rapid and robust recovery following droughts. Vulnerable (15%) and stable locations are shaped by geophysical constraints and heightened climate variability, whereas unstable regions (26%) are characterised by frequent, successive drought events leading to a reduced drought recovery capacity and strong impacts on the groundwater system…”
    #groundwater #drought #recovery #hydrology #waterresources #sustainability #global #patterns #spatialanalysis #spatiotemporal #spatial #mapping #watermanagement #precipitation #rainfall #extremeweather #pumping #extraction #watersecurity #water #hydrology #reserves #aquifer #climatechange #planning #policy #model #modeling #geology #landscape #systems #geophysics
    @utrechtuniversity

    #groundwater #drought #recovery #hydrology #waterresources #sustainability
  3. 💧🌏 Greg Cocks @GregCocks ·

    Global Groundwater Drought Recovery Patterns
    --
    uu.nl/en/news/global-groundwat <-- shared technical article
    --
    doi.org/10.1088/3033-4942/aea6 <-- shared paper
    --
    doi.org/10.1126/science.adu1370 <-- shared paper
    --
    H/T @Faculty of Geosciences (Utrecht University)
    “A few days of rain does not change the low groundwater levels after a long drought. To better determine how groundwater systems recover after a drought and which groundwater reserves are most vulnerable, [a] hydrologist… developed a method to classify groundwater systems based on their ability to recover from long drought. With a very high resolution global groundwater model (1 kilometre) it was possible to determine and analyse how a groundwater system responds during a drought and how quickly it can recover. This provides policymakers with the means to better respond to or prevent severe groundwater problems in the future…”
    --
    “[The author] investigated the various factors that make the groundwater recover or not after a period of drought by looking at a large range of groundwater drought events around the globe. Climate plays a major role, but at the local level the geology and landscape are additional important factors for drought recovery. Looking at these different drivers, [they were] able to make a classification in groundwater systems. It turned out that the majority of locations has resilient groundwater systems (57%), exhibiting rapid and robust recovery following droughts. Vulnerable (15%) and stable locations are shaped by geophysical constraints and heightened climate variability, whereas unstable regions (26%) are characterised by frequent, successive drought events leading to a reduced drought recovery capacity and strong impacts on the groundwater system…”

    @utrechtuniversity

    #groundwater #drought #recovery #hydrology #waterresources #sustainability
  4. 💧🌏 Greg Cocks @[email protected] ·

    Rapid Urban Land Uplift Enhanced By Crustal Faults During Groundwater Recovery
    --
    doi.org/10.1038/s43247-026-039 <-- shared paper
    --
    thepress.co.nz/nz-news/3610903 <-- shared media article, ‘NZ's coastal cities are sinking – but pausing groundwater extraction could save them...’
    --
    H/T @Jesse Kearse |Mana Tūāpapa Fellow in Earth Science
    “🌍 Faults fighting sea-level rise?
    [Their] new paper shows how faults in Osaka 🇯🇵 act as underground dams, trapping groundwater and driving rapid land uplift!
    🛰️ The uplift also reveals hidden faults beneath the city…”
    --
    “Urban land subsidence driven by groundwater extraction is widespread, but the processes governing how groundwater recovery translates into spatially variable surface uplift remain poorly understood. [The authors] use[d] satellite geodesy and multi-decadal groundwater observations to measure vertical land motion in Greater Osaka, Japan, where aquifers are intersected by a dense network of crustal faults. [They] observe[d] widespread surface uplift at rates up to 12 mm/year, organized into distinct domains separated by sharp boundaries. Uplift rates vary abruptly across domain boundaries, which coincide with mapped faults. Where no faults are mapped, abrupt spatial changes in uplift rate suggest the presence of previously unrecognized buried faults. Uplift rates are positively correlated with groundwater-level rise in wells screened at depths up to 600 metres, while deformation modelling indicates dominant uplift sources are shallower than 500 metres. [Their] analysis suggests crustal faults act as hydraulic barriers to lateral groundwater flow, localising vertical land motion during aquifer recovery, with implications for groundwater management, infrastructure stability, and land-use planning in urban basins worldwide...”
    #GIS #spatial #mapping #remotesensing #Japan #Osaka #groundwater #extraction #subsidence #recovery #recharge #spatialanalysis #spatiotemporal #satellite #geodesy #elevation #monitoring #vertical #landmotion #aquifer #waterresources #fault #crustal #geology #uplift #hydraulicbarriers #faultgouge #flow #watermanagement #infrastructure #risk #hazard #damage #landuse #planning #policy #urban #urbanplanning

    #gis #spatial #mapping #remotesensing #japan #osaka
  5. 💧🌏 Greg Cocks @[email protected] ·

    Rapid Urban Land Uplift Enhanced By Crustal Faults During Groundwater Recovery
    --
    doi.org/10.1038/s43247-026-039 <-- shared paper
    --
    thepress.co.nz/nz-news/3610903 <-- shared media article, ‘NZ's coastal cities are sinking – but pausing groundwater extraction could save them...’
    --
    H/T @Jesse Kearse |Mana Tūāpapa Fellow in Earth Science
    “🌍 Faults fighting sea-level rise?
    [Their] new paper shows how faults in Osaka 🇯🇵 act as underground dams, trapping groundwater and driving rapid land uplift!
    🛰️ The uplift also reveals hidden faults beneath the city…”
    --
    “Urban land subsidence driven by groundwater extraction is widespread, but the processes governing how groundwater recovery translates into spatially variable surface uplift remain poorly understood. [The authors] use[d] satellite geodesy and multi-decadal groundwater observations to measure vertical land motion in Greater Osaka, Japan, where aquifers are intersected by a dense network of crustal faults. [They] observe[d] widespread surface uplift at rates up to 12 mm/year, organized into distinct domains separated by sharp boundaries. Uplift rates vary abruptly across domain boundaries, which coincide with mapped faults. Where no faults are mapped, abrupt spatial changes in uplift rate suggest the presence of previously unrecognized buried faults. Uplift rates are positively correlated with groundwater-level rise in wells screened at depths up to 600 metres, while deformation modelling indicates dominant uplift sources are shallower than 500 metres. [Their] analysis suggests crustal faults act as hydraulic barriers to lateral groundwater flow, localising vertical land motion during aquifer recovery, with implications for groundwater management, infrastructure stability, and land-use planning in urban basins worldwide...”
    #GIS #spatial #mapping #remotesensing #Japan #Osaka #groundwater #extraction #subsidence #recovery #recharge #spatialanalysis #spatiotemporal #satellite #geodesy #elevation #monitoring #vertical #landmotion #aquifer #waterresources #fault #crustal #geology #uplift #hydraulicbarriers #faultgouge #flow #watermanagement #infrastructure #risk #hazard #damage #landuse #planning #policy #urban #urbanplanning

    #gis #spatial #mapping #remotesensing #japan #osaka
  6. 💧🌏 Greg Cocks @GregCocks ·

    Rapid Urban Land Uplift Enhanced By Crustal Faults During Groundwater Recovery
    --
    doi.org/10.1038/s43247-026-039 <-- shared paper
    --
    thepress.co.nz/nz-news/3610903 <-- shared media article, ‘NZ's coastal cities are sinking – but pausing groundwater extraction could save them...’
    --
    H/T @Jesse Kearse |Mana Tūāpapa Fellow in Earth Science
    “🌍 Faults fighting sea-level rise?
    [Their] new paper shows how faults in Osaka 🇯🇵 act as underground dams, trapping groundwater and driving rapid land uplift!
    🛰️ The uplift also reveals hidden faults beneath the city…”
    --
    “Urban land subsidence driven by groundwater extraction is widespread, but the processes governing how groundwater recovery translates into spatially variable surface uplift remain poorly understood. [The authors] use[d] satellite geodesy and multi-decadal groundwater observations to measure vertical land motion in Greater Osaka, Japan, where aquifers are intersected by a dense network of crustal faults. [They] observe[d] widespread surface uplift at rates up to 12 mm/year, organized into distinct domains separated by sharp boundaries. Uplift rates vary abruptly across domain boundaries, which coincide with mapped faults. Where no faults are mapped, abrupt spatial changes in uplift rate suggest the presence of previously unrecognized buried faults. Uplift rates are positively correlated with groundwater-level rise in wells screened at depths up to 600 metres, while deformation modelling indicates dominant uplift sources are shallower than 500 metres. [Their] analysis suggests crustal faults act as hydraulic barriers to lateral groundwater flow, localising vertical land motion during aquifer recovery, with implications for groundwater management, infrastructure stability, and land-use planning in urban basins worldwide...”

    #gis #spatial #mapping #remotesensing #japan #osaka
  7. 💧🌏 Greg Cocks @[email protected] ·

    Groundwater Occurrence And Quality In A Hyper-Arid Desert - Insights From High-Resolution Electrical Resistivity Surveys In Tharparkar, Pakistan
    --
    doi.org/10.1007/s10040-026-031 <-- shared paper
    --
    H/T @Naveed Iqbal, PhD
    “🌍 Using geophysical and hydrochemical evidence, the study sheds new light on groundwater occurrence and quality in Tharparkar, one of Pakistan’s most water-scarce regions, where access to reliable and safe water remains a persistent challenge.
    💧 Why does this research matter? By integrating high-resolution electrical resistivity surveys with groundwater-quality information, the study improves understanding of where groundwater occurs, subsurface aquifer conditions, and the spatial variability of groundwater quality in this complex and hyper-arid environment.
    The findings can support the research community, water-sector institutions, planners, and development practitioners by providing an improved scientific basis for:
    🔹 Targeting areas with better groundwater potential and reducing uncertainty in groundwater exploration.
    🔹 Guiding the siting and development of groundwater sources for community water supply.
    🔹 Incorporating groundwater quality into decisions on the suitability and sustainable use of available resources.
    🔹 Supporting evidence-based groundwater management and water-security planning in Tharparkar.
    🔹 Providing a methodological reference for groundwater investigations in other data-scarce, arid and hyper-arid regions.
    Beyond its scientific contribution, the research has an important practical dimension: better knowledge of groundwater occurrence and quality can help water managers make more informed decisions about where and how limited groundwater resources should be explored, developed, protected, and managed to improve reliable water access for water-scarce communities…”
    #Groundwater #Hydrogeology #Hydrogeophysics #WaterSecurity #Tharparkar #Pakistan #WaterResources #GroundwaterManagement #WaterSupply #ElectricalResistivity #WaterQuality #AridRegions #research #desert #rainfall #precipitation #recharge #water #hydrology #remotesensing #hydrochemistry #spatial #spatialanalysis #aquifer #model #modeling #arid #hyperarid #exploration #investigation #wells #watermanagement #community #planning #waterscarce #climate #electricalresistivity #survey #ERS #instrumentation #salinity #freshwater

    #groundwater #hydrogeology #hydrogeophysics #watersecurity #tharparkar #pakistan
  8. 💧🌏 Greg Cocks @[email protected] ·

    Groundwater Occurrence And Quality In A Hyper-Arid Desert - Insights From High-Resolution Electrical Resistivity Surveys In Tharparkar, Pakistan
    --
    doi.org/10.1007/s10040-026-031 <-- shared paper
    --
    H/T @Naveed Iqbal, PhD
    “🌍 Using geophysical and hydrochemical evidence, the study sheds new light on groundwater occurrence and quality in Tharparkar, one of Pakistan’s most water-scarce regions, where access to reliable and safe water remains a persistent challenge.
    💧 Why does this research matter? By integrating high-resolution electrical resistivity surveys with groundwater-quality information, the study improves understanding of where groundwater occurs, subsurface aquifer conditions, and the spatial variability of groundwater quality in this complex and hyper-arid environment.
    The findings can support the research community, water-sector institutions, planners, and development practitioners by providing an improved scientific basis for:
    🔹 Targeting areas with better groundwater potential and reducing uncertainty in groundwater exploration.
    🔹 Guiding the siting and development of groundwater sources for community water supply.
    🔹 Incorporating groundwater quality into decisions on the suitability and sustainable use of available resources.
    🔹 Supporting evidence-based groundwater management and water-security planning in Tharparkar.
    🔹 Providing a methodological reference for groundwater investigations in other data-scarce, arid and hyper-arid regions.
    Beyond its scientific contribution, the research has an important practical dimension: better knowledge of groundwater occurrence and quality can help water managers make more informed decisions about where and how limited groundwater resources should be explored, developed, protected, and managed to improve reliable water access for water-scarce communities…”
    #Groundwater #Hydrogeology #Hydrogeophysics #WaterSecurity #Tharparkar #Pakistan #WaterResources #GroundwaterManagement #WaterSupply #ElectricalResistivity #WaterQuality #AridRegions #research #desert #rainfall #precipitation #recharge #water #hydrology #remotesensing #hydrochemistry #spatial #spatialanalysis #aquifer #model #modeling #arid #hyperarid #exploration #investigation #wells #watermanagement #community #planning #waterscarce #climate #electricalresistivity #survey #ERS #instrumentation #salinity #freshwater

    #groundwater #hydrogeology #hydrogeophysics #watersecurity #tharparkar #pakistan
  9. 💧🌏 Greg Cocks @GregCocks ·

    Groundwater Occurrence And Quality In A Hyper-Arid Desert - Insights From High-Resolution Electrical Resistivity Surveys In Tharparkar, Pakistan
    --
    doi.org/10.1007/s10040-026-031 <-- shared paper
    --
    H/T @Naveed Iqbal, PhD
    “🌍 Using geophysical and hydrochemical evidence, the study sheds new light on groundwater occurrence and quality in Tharparkar, one of Pakistan’s most water-scarce regions, where access to reliable and safe water remains a persistent challenge.
    💧 Why does this research matter? By integrating high-resolution electrical resistivity surveys with groundwater-quality information, the study improves understanding of where groundwater occurs, subsurface aquifer conditions, and the spatial variability of groundwater quality in this complex and hyper-arid environment.
    The findings can support the research community, water-sector institutions, planners, and development practitioners by providing an improved scientific basis for:
    🔹 Targeting areas with better groundwater potential and reducing uncertainty in groundwater exploration.
    🔹 Guiding the siting and development of groundwater sources for community water supply.
    🔹 Incorporating groundwater quality into decisions on the suitability and sustainable use of available resources.
    🔹 Supporting evidence-based groundwater management and water-security planning in Tharparkar.
    🔹 Providing a methodological reference for groundwater investigations in other data-scarce, arid and hyper-arid regions.
    Beyond its scientific contribution, the research has an important practical dimension: better knowledge of groundwater occurrence and quality can help water managers make more informed decisions about where and how limited groundwater resources should be explored, developed, protected, and managed to improve reliable water access for water-scarce communities…”

    #groundwater #hydrogeology #hydrogeophysics #watersecurity #tharparkar #pakistan
  10. 💧🌏 Greg Cocks @[email protected] ·

    Mw 8.2 Tehuantepec, Mexico Earthquake Rupture Segmentation And A Plate Boundary Revealed By A Relocated Machine Learning Based Aftershock Catalog
    --
    doi.org/10.22541/essoar.150096 <-- shared paper
    --
    science.org/content/article/un <-- shared 2017 technical article
    --
    H/T @Allen Husker | Research Professor and Manager of the Southern California Seismic Network
    “The 2017 Mw8.2 Tehuantepec earthquake is the largest instrumentally recorded normal faulting earthquake in Mexico. It occurred offshore on a reactivated outer rise fault within the Tehuantepec megathrust seismic gap that is within the undefined intersection of the North American & Caribbean & Cocos plates. [The authors] analyze[d] a relocated machine learning generated aftershock catalog that used data from temporary and permanent seismic stations around the Gulf of Tehuantepec to further interpret the rupture process of this earthquake. Similar to other results, [they found] that the earthquake initiated 100 km offshore, running northwest 90 km into the intersection. [Their] findings then show that the rupture jumped 10 km inland as it crossed the trench-perpendicular Tehuantepec Ridge and continued another 60 km before stopping. [They] used finite fault inversions to distinguish between different possibilities for how the fault ruptured. A two-plane normal fault model offset at ridge, best represents the slip. Moment tensors reveal that the first section before the Ridge was highly complex with a large mix of moment tensors. After the jump across the Ridge, the earthquakes are solely thrust mechanism for 60 km. This indicates that the normal slip on the second half of the fault rupture probably over-slipped and the aftershocks represent the stress accommodation. There was a separate N-S trending divergent region at the location where the Tehuantepec earthquake stopped. [They] interpret this to be a break between the remaining sliver of the Caribbean plate and the North American plate…”
    #geology #risk #hazard #earthquake #Tehuantepec #Mexico #faulting #offshore #structuralgeology #megathrust #platetectonics #AI #machinelearning #model #modeling #seismic #seismology #GulfofTehuantepec #spatial #spatialanalysis #rupture #impacts #thrust #normalfaulting #aftershocks

    #aftershocks #normalfaulting #thrust #impacts #rupture #spatialanalysis
  11. 💧🌏 Greg Cocks @[email protected] ·

    Mw 8.2 Tehuantepec, Mexico Earthquake Rupture Segmentation And A Plate Boundary Revealed By A Relocated Machine Learning Based Aftershock Catalog
    --
    doi.org/10.22541/essoar.150096 <-- shared paper
    --
    science.org/content/article/un <-- shared 2017 technical article
    --
    H/T @Allen Husker | Research Professor and Manager of the Southern California Seismic Network
    “The 2017 Mw8.2 Tehuantepec earthquake is the largest instrumentally recorded normal faulting earthquake in Mexico. It occurred offshore on a reactivated outer rise fault within the Tehuantepec megathrust seismic gap that is within the undefined intersection of the North American & Caribbean & Cocos plates. [The authors] analyze[d] a relocated machine learning generated aftershock catalog that used data from temporary and permanent seismic stations around the Gulf of Tehuantepec to further interpret the rupture process of this earthquake. Similar to other results, [they found] that the earthquake initiated 100 km offshore, running northwest 90 km into the intersection. [Their] findings then show that the rupture jumped 10 km inland as it crossed the trench-perpendicular Tehuantepec Ridge and continued another 60 km before stopping. [They] used finite fault inversions to distinguish between different possibilities for how the fault ruptured. A two-plane normal fault model offset at ridge, best represents the slip. Moment tensors reveal that the first section before the Ridge was highly complex with a large mix of moment tensors. After the jump across the Ridge, the earthquakes are solely thrust mechanism for 60 km. This indicates that the normal slip on the second half of the fault rupture probably over-slipped and the aftershocks represent the stress accommodation. There was a separate N-S trending divergent region at the location where the Tehuantepec earthquake stopped. [They] interpret this to be a break between the remaining sliver of the Caribbean plate and the North American plate…”
    #geology #risk #hazard #earthquake #Tehuantepec #Mexico #faulting #offshore #structuralgeology #megathrust #platetectonics #AI #machinelearning #model #modeling #seismic #seismology #GulfofTehuantepec #spatial #spatialanalysis #rupture #impacts #thrust #normalfaulting #aftershocks

    #geology #risk #hazard #earthquake #tehuantepec #mexico
  12. 💧🌏 Greg Cocks @[email protected] ·

    Mw 8.2 Tehuantepec, Mexico Earthquake Rupture Segmentation And A Plate Boundary Revealed By A Relocated Machine Learning Based Aftershock Catalog
    --
    doi.org/10.22541/essoar.150096 <-- shared paper
    --
    science.org/content/article/un <-- shared 2017 technical article
    --
    H/T @Allen Husker | Research Professor and Manager of the Southern California Seismic Network
    “The 2017 Mw8.2 Tehuantepec earthquake is the largest instrumentally recorded normal faulting earthquake in Mexico. It occurred offshore on a reactivated outer rise fault within the Tehuantepec megathrust seismic gap that is within the undefined intersection of the North American & Caribbean & Cocos plates. [The authors] analyze[d] a relocated machine learning generated aftershock catalog that used data from temporary and permanent seismic stations around the Gulf of Tehuantepec to further interpret the rupture process of this earthquake. Similar to other results, [they found] that the earthquake initiated 100 km offshore, running northwest 90 km into the intersection. [Their] findings then show that the rupture jumped 10 km inland as it crossed the trench-perpendicular Tehuantepec Ridge and continued another 60 km before stopping. [They] used finite fault inversions to distinguish between different possibilities for how the fault ruptured. A two-plane normal fault model offset at ridge, best represents the slip. Moment tensors reveal that the first section before the Ridge was highly complex with a large mix of moment tensors. After the jump across the Ridge, the earthquakes are solely thrust mechanism for 60 km. This indicates that the normal slip on the second half of the fault rupture probably over-slipped and the aftershocks represent the stress accommodation. There was a separate N-S trending divergent region at the location where the Tehuantepec earthquake stopped. [They] interpret this to be a break between the remaining sliver of the Caribbean plate and the North American plate…”
    #geology #risk #hazard #earthquake #Tehuantepec #Mexico #faulting #offshore #structuralgeology #megathrust #platetectonics #AI #machinelearning #model #modeling #seismic #seismology #GulfofTehuantepec #spatial #spatialanalysis #rupture #impacts #thrust #normalfaulting #aftershocks

    #geology #risk #hazard #earthquake #tehuantepec #mexico
  13. 💧🌏 Greg Cocks @GregCocks ·

    Mw 8.2 Tehuantepec, Mexico Earthquake Rupture Segmentation And A Plate Boundary Revealed By A Relocated Machine Learning Based Aftershock Catalog
    --
    doi.org/10.22541/essoar.150096 <-- shared paper
    --
    science.org/content/article/un <-- shared 2017 technical article
    --
    H/T @Allen Husker | Research Professor and Manager of the Southern California Seismic Network
    “The 2017 Mw8.2 Tehuantepec earthquake is the largest instrumentally recorded normal faulting earthquake in Mexico. It occurred offshore on a reactivated outer rise fault within the Tehuantepec megathrust seismic gap that is within the undefined intersection of the North American & Caribbean & Cocos plates. [The authors] analyze[d] a relocated machine learning generated aftershock catalog that used data from temporary and permanent seismic stations around the Gulf of Tehuantepec to further interpret the rupture process of this earthquake. Similar to other results, [they found] that the earthquake initiated 100 km offshore, running northwest 90 km into the intersection. [Their] findings then show that the rupture jumped 10 km inland as it crossed the trench-perpendicular Tehuantepec Ridge and continued another 60 km before stopping. [They] used finite fault inversions to distinguish between different possibilities for how the fault ruptured. A two-plane normal fault model offset at ridge, best represents the slip. Moment tensors reveal that the first section before the Ridge was highly complex with a large mix of moment tensors. After the jump across the Ridge, the earthquakes are solely thrust mechanism for 60 km. This indicates that the normal slip on the second half of the fault rupture probably over-slipped and the aftershocks represent the stress accommodation. There was a separate N-S trending divergent region at the location where the Tehuantepec earthquake stopped. [They] interpret this to be a break between the remaining sliver of the Caribbean plate and the North American plate…”

    #geology #risk #hazard #earthquake #tehuantepec #mexico
  14. 💧🌏 Greg Cocks @[email protected] ·

    How Far Does Water Travel When Peatlands Are Rewetted? A New Model Reveals The Answer
    --
    scienmag.com/how-far-does-wate <-- shared technical article
    --
    doi.org/10.1007/s10040-026-031 <-- shared paper
    --
    peatcarbon.lu.lv/fileadmin/use <-- shared technical article / ‘progress report’
    --
    eos.org/articles/restored-peat <-- shared EOS technical article
    --
    finland.fi/life-society/peatla <-- shared ‘this is FINLAND’ technical media article
    --
    H/T @omar Ashraf Nimr | Doctoral Researcher | Eco-Hydrogeology | Water Resources Enthusiast | Lifelong Learner and Educator
    “Deep beneath the seemingly still surface of the world’s peatlands lies one of the planet’s most consequential plumbing systems. These waterlogged landscapes cover only about three percent of the global land surface, yet they store more carbon than all terrestrial biomass combined. When they are drained for forestry, agriculture, or peat extraction, the falling water table exposes ancient organic matter to oxygen, accelerating decomposition and releasing carbon dioxide into the atmosphere. Estimates suggest that every centimetre of water-table decline adds roughly 0.3 tonnes of carbon dioxide equivalent per hectare per year, a relationship that has transformed many drained peatlands from net carbon sinks into persistent carbon sources. Rewetting through ditch blocking and damming has therefore become a cornerstone of climate mitigation policy, enshrined in initiatives such as the United Nations Decade on Ecosystem Restoration and the European Union’s legally binding Nature Restoration Law. But a fundamental question has haunted restoration practitioners for decades: when you block a ditch, how far does the benefit actually spread?...”
    “A new study [link above] offers the most mechanistically complete answer yet. [T]he research used a fully integrated three-dimensional physics-based model called HydroGeoSphere to simulate how rewetting propagates through a boreal fen… Unlike the sparse point measurements that dominate conventional restoration assessments, the model resolved water-table dynamics across the entire 224-hectare mire and its 556-hectare headwater catchment at daily resolution over a full hydrological year, generating millions of spatially explicit data points that no field campaign could ever collect…”
    #borealfen #carbonemissions #climatechange #mitigation #peatland #restoration #ditchblocking #ditch #engineered #ecosystem #ecosystemrestoration #policy #planning# waterflow #water #hydrology #Finland #Matorovasuo #Kittilä #Arctic #globalcarboncycle #carboncycle #groundwater #model #modeling #hydrogeology #HydroGeoSphere #hydrology #water #hydogeomorphology #hydrologicalmodeling #rewetted #wetlands #peat #hydroorganic #gegetation #decomposition #carbonstorage #carbonrelease #watertable #dynamics #variogram #geomorphology #hydrogeomorphology #mire #peat #spatialanalysis #geology #soils #restoration #habitat #model #modeling

    #borealfen #carbonemissions #climatechange #mitigation #peatland #restoration
  15. 💧🌏 Greg Cocks @[email protected] ·

    How Far Does Water Travel When Peatlands Are Rewetted? A New Model Reveals The Answer
    --
    scienmag.com/how-far-does-wate <-- shared technical article
    --
    doi.org/10.1007/s10040-026-031 <-- shared paper
    --
    peatcarbon.lu.lv/fileadmin/use <-- shared technical article / ‘progress report’
    --
    eos.org/articles/restored-peat <-- shared EOS technical article
    --
    finland.fi/life-society/peatla <-- shared ‘this is FINLAND’ technical media article
    --
    H/T @omar Ashraf Nimr | Doctoral Researcher | Eco-Hydrogeology | Water Resources Enthusiast | Lifelong Learner and Educator
    “Deep beneath the seemingly still surface of the world’s peatlands lies one of the planet’s most consequential plumbing systems. These waterlogged landscapes cover only about three percent of the global land surface, yet they store more carbon than all terrestrial biomass combined. When they are drained for forestry, agriculture, or peat extraction, the falling water table exposes ancient organic matter to oxygen, accelerating decomposition and releasing carbon dioxide into the atmosphere. Estimates suggest that every centimetre of water-table decline adds roughly 0.3 tonnes of carbon dioxide equivalent per hectare per year, a relationship that has transformed many drained peatlands from net carbon sinks into persistent carbon sources. Rewetting through ditch blocking and damming has therefore become a cornerstone of climate mitigation policy, enshrined in initiatives such as the United Nations Decade on Ecosystem Restoration and the European Union’s legally binding Nature Restoration Law. But a fundamental question has haunted restoration practitioners for decades: when you block a ditch, how far does the benefit actually spread?...”
    “A new study [link above] offers the most mechanistically complete answer yet. [T]he research used a fully integrated three-dimensional physics-based model called HydroGeoSphere to simulate how rewetting propagates through a boreal fen… Unlike the sparse point measurements that dominate conventional restoration assessments, the model resolved water-table dynamics across the entire 224-hectare mire and its 556-hectare headwater catchment at daily resolution over a full hydrological year, generating millions of spatially explicit data points that no field campaign could ever collect…”
    #borealfen #carbonemissions #climatechange #mitigation #peatland #restoration #ditchblocking #ditch #engineered #ecosystem #ecosystemrestoration #policy #planning #waterflow #water #hydrology #Finland #Matorovasuo #Kittilä #Arctic #globalcarboncycle #carboncycle #groundwater #model #modeling #hydrogeology #HydroGeoSphere #hydrology #water #hydogeomorphology #hydrologicalmodeling #rewetted #wetlands #peat #hydroorganic #gegetation #decomposition #carbonstorage #carbonrelease #watertable #dynamics #variogram #geomorphology #hydrogeomorphology #mire #peat #spatialanalysis #geology #soils #restoration #habitat #model #modeling

    #borealfen #carbonemissions #climatechange #mitigation #peatland #restoration
  16. 💧🌏 Greg Cocks @[email protected] ·

    How Far Does Water Travel When Peatlands Are Rewetted? A New Model Reveals The Answer
    --
    scienmag.com/how-far-does-wate <-- shared technical article
    --
    doi.org/10.1007/s10040-026-031 <-- shared paper
    --
    peatcarbon.lu.lv/fileadmin/use <-- shared technical article / ‘progress report’
    --
    eos.org/articles/restored-peat <-- shared EOS technical article
    --
    finland.fi/life-society/peatla <-- shared ‘this is FINLAND’ technical media article
    --
    H/T @omar Ashraf Nimr | Doctoral Researcher | Eco-Hydrogeology | Water Resources Enthusiast | Lifelong Learner and Educator
    “Deep beneath the seemingly still surface of the world’s peatlands lies one of the planet’s most consequential plumbing systems. These waterlogged landscapes cover only about three percent of the global land surface, yet they store more carbon than all terrestrial biomass combined. When they are drained for forestry, agriculture, or peat extraction, the falling water table exposes ancient organic matter to oxygen, accelerating decomposition and releasing carbon dioxide into the atmosphere. Estimates suggest that every centimetre of water-table decline adds roughly 0.3 tonnes of carbon dioxide equivalent per hectare per year, a relationship that has transformed many drained peatlands from net carbon sinks into persistent carbon sources. Rewetting through ditch blocking and damming has therefore become a cornerstone of climate mitigation policy, enshrined in initiatives such as the United Nations Decade on Ecosystem Restoration and the European Union’s legally binding Nature Restoration Law. But a fundamental question has haunted restoration practitioners for decades: when you block a ditch, how far does the benefit actually spread?...”
    “A new study [link above] offers the most mechanistically complete answer yet. [T]he research used a fully integrated three-dimensional physics-based model called HydroGeoSphere to simulate how rewetting propagates through a boreal fen… Unlike the sparse point measurements that dominate conventional restoration assessments, the model resolved water-table dynamics across the entire 224-hectare mire and its 556-hectare headwater catchment at daily resolution over a full hydrological year, generating millions of spatially explicit data points that no field campaign could ever collect…”
    #borealfen #carbonemissions #climatechange #mitigation #peatland #restoration #ditchblocking #ditch #engineered #ecosystem #ecosystemrestoration #policy #planning #waterflow #water #hydrology #Finland #Matorovasuo #Kittilä #Arctic #globalcarboncycle #carboncycle #groundwater #model #modeling #hydrogeology #HydroGeoSphere #hydrology #water #hydogeomorphology #hydrologicalmodeling #rewetted #wetlands #peat #hydroorganic #gegetation #decomposition #carbonstorage #carbonrelease #watertable #dynamics #variogram #geomorphology #hydrogeomorphology #mire #peat #spatialanalysis #geology #soils #restoration #habitat #model #modeling

    #waterflow #borealfen #carbonemissions #climatechange #mitigation #peatland
  17. 💧🌏 Greg Cocks @[email protected] ·

    How Far Does Water Travel When Peatlands Are Rewetted? A New Model Reveals The Answer
    --
    scienmag.com/how-far-does-wate <-- shared technical article
    --
    doi.org/10.1007/s10040-026-031 <-- shared paper
    --
    peatcarbon.lu.lv/fileadmin/use <-- shared technical article / ‘progress report’
    --
    eos.org/articles/restored-peat <-- shared EOS technical article
    --
    finland.fi/life-society/peatla <-- shared ‘this is FINLAND’ technical media article
    --
    H/T @omar Ashraf Nimr | Doctoral Researcher | Eco-Hydrogeology | Water Resources Enthusiast | Lifelong Learner and Educator
    “Deep beneath the seemingly still surface of the world’s peatlands lies one of the planet’s most consequential plumbing systems. These waterlogged landscapes cover only about three percent of the global land surface, yet they store more carbon than all terrestrial biomass combined. When they are drained for forestry, agriculture, or peat extraction, the falling water table exposes ancient organic matter to oxygen, accelerating decomposition and releasing carbon dioxide into the atmosphere. Estimates suggest that every centimetre of water-table decline adds roughly 0.3 tonnes of carbon dioxide equivalent per hectare per year, a relationship that has transformed many drained peatlands from net carbon sinks into persistent carbon sources. Rewetting through ditch blocking and damming has therefore become a cornerstone of climate mitigation policy, enshrined in initiatives such as the United Nations Decade on Ecosystem Restoration and the European Union’s legally binding Nature Restoration Law. But a fundamental question has haunted restoration practitioners for decades: when you block a ditch, how far does the benefit actually spread?...”
    “A new study [link above] offers the most mechanistically complete answer yet. [T]he research used a fully integrated three-dimensional physics-based model called HydroGeoSphere to simulate how rewetting propagates through a boreal fen… Unlike the sparse point measurements that dominate conventional restoration assessments, the model resolved water-table dynamics across the entire 224-hectare mire and its 556-hectare headwater catchment at daily resolution over a full hydrological year, generating millions of spatially explicit data points that no field campaign could ever collect…”
    #borealfen #carbonemissions #climatechange #mitigation #peatland #restoration #ditchblocking #ditch #engineered #ecosystem #ecosystemrestoration #policy #planning #waterflow #water #hydrology #Finland #Matorovasuo #Kittilä #Arctic #globalcarboncycle #carboncycle #groundwater #model #modeling #hydrogeology #HydroGeoSphere #hydrology #water #hydogeomorphology #hydrologicalmodeling #rewetted #wetlands #peat #hydroorganic #gegetation #decomposition #carbonstorage #carbonrelease #watertable #dynamics #variogram #geomorphology #hydrogeomorphology #mire #peat #spatialanalysis #geology #soils #restoration #habitat #model #modeling

    #waterflow #habitat #soils #geology #spatialanalysis #mire
  18. 💧🌏 Greg Cocks @GregCocks ·

    How Far Does Water Travel When Peatlands Are Rewetted? A New Model Reveals The Answer
    --
    scienmag.com/how-far-does-wate <-- shared technical article
    --
    doi.org/10.1007/s10040-026-031 <-- shared paper
    --
    peatcarbon.lu.lv/fileadmin/use <-- shared technical article / ‘progress report’
    --
    eos.org/articles/restored-peat <-- shared EOS technical article
    --
    finland.fi/life-society/peatla <-- shared ‘this is FINLAND’ technical media article
    --
    H/T @omar Ashraf Nimr | Doctoral Researcher | Eco-Hydrogeology | Water Resources Enthusiast | Lifelong Learner and Educator
    “Deep beneath the seemingly still surface of the world’s peatlands lies one of the planet’s most consequential plumbing systems. These waterlogged landscapes cover only about three percent of the global land surface, yet they store more carbon than all terrestrial biomass combined. When they are drained for forestry, agriculture, or peat extraction, the falling water table exposes ancient organic matter to oxygen, accelerating decomposition and releasing carbon dioxide into the atmosphere. Estimates suggest that every centimetre of water-table decline adds roughly 0.3 tonnes of carbon dioxide equivalent per hectare per year, a relationship that has transformed many drained peatlands from net carbon sinks into persistent carbon sources. Rewetting through ditch blocking and damming has therefore become a cornerstone of climate mitigation policy, enshrined in initiatives such as the United Nations Decade on Ecosystem Restoration and the European Union’s legally binding Nature Restoration Law. But a fundamental question has haunted restoration practitioners for decades: when you block a ditch, how far does the benefit actually spread?...”
    “A new study [link above] offers the most mechanistically complete answer yet. [T]he research used a fully integrated three-dimensional physics-based model called HydroGeoSphere to simulate how rewetting propagates through a boreal fen… Unlike the sparse point measurements that dominate conventional restoration assessments, the model resolved water-table dynamics across the entire 224-hectare mire and its 556-hectare headwater catchment at daily resolution over a full hydrological year, generating millions of spatially explicit data points that no field campaign could ever collect…”

    #borealfen #carbonemissions #climatechange #mitigation #peatland #restoration
  19. 💧🌏 Greg Cocks @[email protected] ·

    Pluvial Flood Impacts And Policyholder Responses Throughout The United States
    --
    doi.org/10.1038/s44304-025-000 <-- shared paper
    --
    zurichna.com/knowledge/article <-- shared insurance company technical article, ‘Pluvial flooding - Protecting your property from a growing risk’
    --
    H/T @seth Guikema | Professor of Risk Analysis and Predictive Data Analytics
    "Pluvial flooding is flooding caused by rain that falls faster than the ground and drainage systems can absorb or carry it away. Water can accumulate and damage homes even when they are nowhere near a river or coast. It is often referred to as "urban flooding" but it can cause problems in rural areas as well.
    It is a major source of flood risk, but one that receives less attention than riverine and coastal flooding. A 2025 paper by Ben Nelson-Schmitz and colleagues helps show why that needs to change. They combined National Flood Insurance Program claims with streamflow data to examine flood claims from properties outside mapped 100-year floodplains. Under their classification method, about 87% of the claims they could analyze were attributed to pluvial flooding. They also found that flood insurance coverage outside these mapped floodplains was declining in many states.
    The exact percentage depends in part on the accuracy of the underlying flood maps. Some properties recorded as outside a 100-year floodplain may in fact be exposed to river flooding. The authors acknowledge this limitation and test how their results change under different streamflow thresholds. It is a reason to be careful with the precise estimate, but it does not diminish the central point: rainfall-driven flooding outside mapped floodplains warrants much more attention in flood research and risk management..."
    #flood #flooding #risk #hazard #mapping #spatial #GIS #pluvial #insurance #actuary #property #infrastructure #cost #economics #rainfall #precipitation #runoff #infiltration #homes #urban #residential #floodrisk #pluvialflooding #urbanflooding #rural #NationalFloodInsuranceProgram #spatialanalysis #spatiotemporal #streamflow #floodclaims #analysis #geostatistics #floodplains #floodmaps #insuranceclaims #inundation #water #hydrography #elevation #surface #impervious #riskmanagement

    #flood #flooding #risk #hazard #mapping #spatial
  20. 💧🌏 Greg Cocks @[email protected] ·

    Pluvial Flood Impacts And Policyholder Responses Throughout The United States
    --
    doi.org/10.1038/s44304-025-000 <-- shared paper
    --
    zurichna.com/knowledge/article <-- shared insurance company technical article, ‘Pluvial flooding - Protecting your property from a growing risk’
    --
    H/T @seth Guikema | Professor of Risk Analysis and Predictive Data Analytics
    "Pluvial flooding is flooding caused by rain that falls faster than the ground and drainage systems can absorb or carry it away. Water can accumulate and damage homes even when they are nowhere near a river or coast. It is often referred to as "urban flooding" but it can cause problems in rural areas as well.
    It is a major source of flood risk, but one that receives less attention than riverine and coastal flooding. A 2025 paper by Ben Nelson-Schmitz and colleagues helps show why that needs to change. They combined National Flood Insurance Program claims with streamflow data to examine flood claims from properties outside mapped 100-year floodplains. Under their classification method, about 87% of the claims they could analyze were attributed to pluvial flooding. They also found that flood insurance coverage outside these mapped floodplains was declining in many states.
    The exact percentage depends in part on the accuracy of the underlying flood maps. Some properties recorded as outside a 100-year floodplain may in fact be exposed to river flooding. The authors acknowledge this limitation and test how their results change under different streamflow thresholds. It is a reason to be careful with the precise estimate, but it does not diminish the central point: rainfall-driven flooding outside mapped floodplains warrants much more attention in flood research and risk management..."
    #flood #flooding #risk #hazard #mapping #spatial #GIS #pluvial #insurance #actuary #property #infrastructure #cost #economics #rainfall #precipitation #runoff #infiltration #homes #urban #residential #floodrisk #pluvialflooding #urbanflooding #rural #NationalFloodInsuranceProgram #spatialanalysis #spatiotemporal #streamflow #floodclaims #analysis #geostatistics #floodplains #floodmaps #insuranceclaims #inundation #water #hydrography #elevation #surface #impervious #riskmanagement

    #flood #flooding #risk #hazard #mapping #spatial
  21. 💧🌏 Greg Cocks @[email protected] ·

    Pluvial Flood Impacts And Policyholder Responses Throughout The United States
    --
    doi.org/10.1038/s44304-025-000 <-- shared paper
    --
    zurichna.com/knowledge/article <-- shared insurance company technical article, ‘Pluvial flooding - Protecting your property from a growing risk’
    --
    H/T @seth Guikema | Professor of Risk Analysis and Predictive Data Analytics
    "Pluvial flooding is flooding caused by rain that falls faster than the ground and drainage systems can absorb or carry it away. Water can accumulate and damage homes even when they are nowhere near a river or coast. It is often referred to as "urban flooding" but it can cause problems in rural areas as well.
    It is a major source of flood risk, but one that receives less attention than riverine and coastal flooding. A 2025 paper by Ben Nelson-Schmitz and colleagues helps show why that needs to change. They combined National Flood Insurance Program claims with streamflow data to examine flood claims from properties outside mapped 100-year floodplains. Under their classification method, about 87% of the claims they could analyze were attributed to pluvial flooding. They also found that flood insurance coverage outside these mapped floodplains was declining in many states.
    The exact percentage depends in part on the accuracy of the underlying flood maps. Some properties recorded as outside a 100-year floodplain may in fact be exposed to river flooding. The authors acknowledge this limitation and test how their results change under different streamflow thresholds. It is a reason to be careful with the precise estimate, but it does not diminish the central point: rainfall-driven flooding outside mapped floodplains warrants much more attention in flood research and risk management..."
    #flood #flooding #risk #hazard #mapping #spatial #GIS #pluvial #insurance #actuary #property #infrastructure #cost #economics #rainfall #precipitation #runoff #infiltration #homes #urban #residential #floodrisk #pluvialflooding #urbanflooding #rural #NationalFloodInsuranceProgram #spatialanalysis #spatiotemporal #streamflow #floodclaims #analysis #geostatistics #floodplains #floodmaps #insuranceclaims #inundation #water #hydrography #elevation #surface #impervious #riskmanagement

    #flood #flooding #risk #hazard #mapping #spatial
  22. 💧🌏 Greg Cocks @[email protected] ·

    Pluvial Flood Impacts And Policyholder Responses Throughout The United States
    --
    doi.org/10.1038/s44304-025-000 <-- shared paper
    --
    zurichna.com/knowledge/article <-- shared insurance company technical article, ‘Pluvial flooding - Protecting your property from a growing risk’
    --
    H/T @seth Guikema | Professor of Risk Analysis and Predictive Data Analytics
    "Pluvial flooding is flooding caused by rain that falls faster than the ground and drainage systems can absorb or carry it away. Water can accumulate and damage homes even when they are nowhere near a river or coast. It is often referred to as "urban flooding" but it can cause problems in rural areas as well.
    It is a major source of flood risk, but one that receives less attention than riverine and coastal flooding. A 2025 paper by Ben Nelson-Schmitz and colleagues helps show why that needs to change. They combined National Flood Insurance Program claims with streamflow data to examine flood claims from properties outside mapped 100-year floodplains. Under their classification method, about 87% of the claims they could analyze were attributed to pluvial flooding. They also found that flood insurance coverage outside these mapped floodplains was declining in many states.
    The exact percentage depends in part on the accuracy of the underlying flood maps. Some properties recorded as outside a 100-year floodplain may in fact be exposed to river flooding. The authors acknowledge this limitation and test how their results change under different streamflow thresholds. It is a reason to be careful with the precise estimate, but it does not diminish the central point: rainfall-driven flooding outside mapped floodplains warrants much more attention in flood research and risk management..."
    #flood #flooding #risk #hazard #mapping #spatial #GIS #pluvial #insurance #actuary #property #infrastructure #cost #economics #rainfall #precipitation #runoff #infiltration #homes #urban #residential #floodrisk #pluvialflooding #urbanflooding #rural #NationalFloodInsuranceProgram #spatialanalysis #spatiotemporal #streamflow #floodclaims #analysis #geostatistics #floodplains #floodmaps #insuranceclaims #inundation #water #hydrography #elevation #surface #impervious #riskmanagement

    #riskmanagement #impervious #surface #elevation #hydrography #water
  23. 💧🌏 Greg Cocks @GregCocks ·

    Pluvial Flood Impacts And Policyholder Responses Throughout The United States
    --
    doi.org/10.1038/s44304-025-000 <-- shared paper
    --
    zurichna.com/knowledge/article <-- shared insurance company technical article, ‘Pluvial flooding - Protecting your property from a growing risk’
    --
    H/T @seth Guikema | Professor of Risk Analysis and Predictive Data Analytics
    "Pluvial flooding is flooding caused by rain that falls faster than the ground and drainage systems can absorb or carry it away. Water can accumulate and damage homes even when they are nowhere near a river or coast. It is often referred to as "urban flooding" but it can cause problems in rural areas as well.
    It is a major source of flood risk, but one that receives less attention than riverine and coastal flooding. A 2025 paper by Ben Nelson-Schmitz and colleagues helps show why that needs to change. They combined National Flood Insurance Program claims with streamflow data to examine flood claims from properties outside mapped 100-year floodplains. Under their classification method, about 87% of the claims they could analyze were attributed to pluvial flooding. They also found that flood insurance coverage outside these mapped floodplains was declining in many states.
    The exact percentage depends in part on the accuracy of the underlying flood maps. Some properties recorded as outside a 100-year floodplain may in fact be exposed to river flooding. The authors acknowledge this limitation and test how their results change under different streamflow thresholds. It is a reason to be careful with the precise estimate, but it does not diminish the central point: rainfall-driven flooding outside mapped floodplains warrants much more attention in flood research and risk management..."

    #flood #flooding #risk #hazard #mapping #spatial
  24. 💧🌏 Greg Cocks @[email protected] ·

    Grain Size And Sediment Storage Explain Why Postfire Debris Flows Are Absent In Some Mountainous Landscapes
    --
    doi.org/10.1126/sciadv.aec7923 <-- shared paper
    --
    H/T @drew Coe | Staff Chief - Northern Region Resource Management
    “We’ve speculated for years why the USGS post-fire debris flow model over-predicted debris flow likelihood in many parts of Northern California. This paper presents a mechanistic reason why…”
    --
    “Postfire debris flow occurrence varies widely in mountainous landscapes, even under similar rainfall conditions. To understand why, [the authors] investigated two burned landscapes that experienced intense postfire rainfall: one in southern California with over 100 postfire debris flows and one in northern California with no postfire debris flows. Debris flows can initiate from bed failures that are predicted to occur when Shields stress τ* exceeds a threshold. [They] characterized τ* at the two sites, investigated bed failure, and conducted numerical experiments to identify controlling factors. Postfire increases in clear-water runoff raised τ* by up to threefold, whereas postfire reductions in channel grain size raised τ* by two orders of magnitude. No increase in runoff was required to initiate debris flows at the southern California site, yet debris flows were unlikely to initiate at the northern California site even for considerable increases in runoff. These results provide a mechanistic explanation for discrepancies in debris flow occurrence in mountainous landscapes…”
    #engineeringgeology #wildfire #debrisflow #soil #geology #sediment #massmovement #postwildfire #burnarea #USGS #model #modeling #mechanistic #California #postfire #slope #drainagearea #mountain #rainfall #precipitation #water #hydrography #runoff #spatialanalysis #spatiotemporal #dynamic #mechanics #sheetwash #rilling

    #engineeringgeology #wildfire #debrisflow #soil #geology #sediment
  25. 💧🌏 Greg Cocks @[email protected] ·

    Grain Size And Sediment Storage Explain Why Postfire Debris Flows Are Absent In Some Mountainous Landscapes
    --
    doi.org/10.1126/sciadv.aec7923 <-- shared paper
    --
    H/T @drew Coe | Staff Chief - Northern Region Resource Management
    “We’ve speculated for years why the USGS post-fire debris flow model over-predicted debris flow likelihood in many parts of Northern California. This paper presents a mechanistic reason why…”
    --
    “Postfire debris flow occurrence varies widely in mountainous landscapes, even under similar rainfall conditions. To understand why, [the authors] investigated two burned landscapes that experienced intense postfire rainfall: one in southern California with over 100 postfire debris flows and one in northern California with no postfire debris flows. Debris flows can initiate from bed failures that are predicted to occur when Shields stress τ* exceeds a threshold. [They] characterized τ* at the two sites, investigated bed failure, and conducted numerical experiments to identify controlling factors. Postfire increases in clear-water runoff raised τ* by up to threefold, whereas postfire reductions in channel grain size raised τ* by two orders of magnitude. No increase in runoff was required to initiate debris flows at the southern California site, yet debris flows were unlikely to initiate at the northern California site even for considerable increases in runoff. These results provide a mechanistic explanation for discrepancies in debris flow occurrence in mountainous landscapes…”
    #engineeringgeology #wildfire #debrisflow #soil #geology #sediment #massmovement #postwildfire #burnarea #USGS #model #modeling #mechanistic #California #postfire #slope #drainagearea #mountain #rainfall #precipitation #water #hydrography #runoff #spatialanalysis #spatiotemporal #dynamic #mechanics #sheetwash #rilling

    #engineeringgeology #wildfire #debrisflow #soil #geology #sediment
  26. 💧🌏 Greg Cocks @[email protected] ·

    Grain Size And Sediment Storage Explain Why Postfire Debris Flows Are Absent In Some Mountainous Landscapes
    --
    doi.org/10.1126/sciadv.aec7923 <-- shared paper
    --
    H/T @drew Coe | Staff Chief - Northern Region Resource Management
    “We’ve speculated for years why the USGS post-fire debris flow model over-predicted debris flow likelihood in many parts of Northern California. This paper presents a mechanistic reason why…”
    --
    “Postfire debris flow occurrence varies widely in mountainous landscapes, even under similar rainfall conditions. To understand why, [the authors] investigated two burned landscapes that experienced intense postfire rainfall: one in southern California with over 100 postfire debris flows and one in northern California with no postfire debris flows. Debris flows can initiate from bed failures that are predicted to occur when Shields stress τ* exceeds a threshold. [They] characterized τ* at the two sites, investigated bed failure, and conducted numerical experiments to identify controlling factors. Postfire increases in clear-water runoff raised τ* by up to threefold, whereas postfire reductions in channel grain size raised τ* by two orders of magnitude. No increase in runoff was required to initiate debris flows at the southern California site, yet debris flows were unlikely to initiate at the northern California site even for considerable increases in runoff. These results provide a mechanistic explanation for discrepancies in debris flow occurrence in mountainous landscapes…”
    #engineeringgeology #wildfire #debrisflow #soil #geology #sediment #massmovement #postwildfire #burnarea #USGS #model #modeling #mechanistic #California #postfire #slope #drainagearea #mountain #rainfall #precipitation #water #hydrography #runoff #spatialanalysis #spatiotemporal #dynamic #mechanics #sheetwash #rilling

    #rilling #sheetwash #mechanics #dynamic #spatiotemporal #spatialanalysis
  27. 💧🌏 Greg Cocks @GregCocks ·

    Grain Size And Sediment Storage Explain Why Postfire Debris Flows Are Absent In Some Mountainous Landscapes
    --
    doi.org/10.1126/sciadv.aec7923 <-- shared paper
    --
    H/T @drew Coe | Staff Chief - Northern Region Resource Management
    “We’ve speculated for years why the USGS post-fire debris flow model over-predicted debris flow likelihood in many parts of Northern California. This paper presents a mechanistic reason why…”
    --
    “Postfire debris flow occurrence varies widely in mountainous landscapes, even under similar rainfall conditions. To understand why, [the authors] investigated two burned landscapes that experienced intense postfire rainfall: one in southern California with over 100 postfire debris flows and one in northern California with no postfire debris flows. Debris flows can initiate from bed failures that are predicted to occur when Shields stress τ* exceeds a threshold. [They] characterized τ* at the two sites, investigated bed failure, and conducted numerical experiments to identify controlling factors. Postfire increases in clear-water runoff raised τ* by up to threefold, whereas postfire reductions in channel grain size raised τ* by two orders of magnitude. No increase in runoff was required to initiate debris flows at the southern California site, yet debris flows were unlikely to initiate at the northern California site even for considerable increases in runoff. These results provide a mechanistic explanation for discrepancies in debris flow occurrence in mountainous landscapes…”

    #engineeringgeology #wildfire #debrisflow #soil #geology #sediment
  28. 💧🌏 Greg Cocks @[email protected] ·

    Grain Size And Sediment Storage Explain Why Postfire Debris Flows Are Absent In Some Mountainous Landscapes
    --
    doi.org/10.1126/sciadv.aec7923 <-- shared paper
    --
    H/T @drew Coe | Staff Chief - Northern Region Resource Management
    “We’ve speculated for years why the USGS post-fire debris flow model over-predicted debris flow likelihood in many parts of Northern California. This paper presents a mechanistic reason why…”
    --
    “Postfire debris flow occurrence varies widely in mountainous landscapes, even under similar rainfall conditions. To understand why, [the authors] investigated two burned landscapes that experienced intense postfire rainfall: one in southern California with over 100 postfire debris flows and one in northern California with no postfire debris flows. Debris flows can initiate from bed failures that are predicted to occur when Shields stress τ* exceeds a threshold. [They] characterized τ* at the two sites, investigated bed failure, and conducted numerical experiments to identify controlling factors. Postfire increases in clear-water runoff raised τ* by up to threefold, whereas postfire reductions in channel grain size raised τ* by two orders of magnitude. No increase in runoff was required to initiate debris flows at the southern California site, yet debris flows were unlikely to initiate at the northern California site even for considerable increases in runoff. These results provide a mechanistic explanation for discrepancies in debris flow occurrence in mountainous landscapes…”
    #engineeringgeology #wildfire #debrisflow #soil #geology #sediment #massmovement #postwildfire #burnarea #USGS #model #modeling #mechanistic #California #postfire #slope #drainagearea #mountain #rainfall #precipitation #water #hydrography #runoff #spatialanalysis #spatiotemporal #dynamic #mechanics #sheetwash #rilling

    #engineeringgeology #wildfire #debrisflow #soil #geology #sediment
  29. 💧🌏 Greg Cocks @[email protected] ·

    Hydrologic and Erosion Responses of Burned Watersheds [USGS]
    --
    usgs.gov/mission-areas/water-r <-- shared (2019) technical article
    --
    denverwater.org/recreation/gro <-- shared Denver Water website for Gross Reservoir
    --
    [the post should not be considered an endorsement of a specific viewpoint]
    H/T @kevin Pilgrim, PE | I specialize in mountain hydrology, hydraulics, fluvial geomorphology, post-fire flood hazard assessment. Contact me for hire if you want to understand flood risk near where you live.
    “An old lesson Denver Water is still reacting to. High intensity wildland fires burn watersheds and deliver sediment to the reservoirs at previously unmeasured rates…
    The droughts, wildfires, floods will only increase these issues.
    Why do [the H/T] say large dams are not the answer? This. The reservoirs are unlikely to last their intended design life as Denver Water realized.
    We can not glue sand to mountains after fires…”
    --
    “The enhanced probability of catastrophic wildfires has increased our need to understand the risk of floods, erosion, and debris and contaminant transport in burned watersheds. This project investigates the relation between rainfall intensity and peak discharge; erosion and deposition processes; and water-quality impacts to minimize the loss of life and property resulting from post-wildfire floods…”
    #water #hydrogy #hydrography #infrastructure #waterresources #watermanagement #wildfire #sediment #sedimentation #runoff #research engineering #design #lifecyle #useage #designlife #erosion #deposition #waterquality #debrisflow #burned #watersheds #rainfall #precipitation #discharge #publicsafety #postwildfire #flood #flooding #extremeweather #climatechange
    @Denver Water | @USGS

    #water #hydrogy #hydrography #infrastructure #waterresources #watermanagement
  30. 💧🌏 Greg Cocks @[email protected] ·

    Hydrologic and Erosion Responses of Burned Watersheds [USGS]
    --
    usgs.gov/mission-areas/water-r <-- shared (2019) technical article
    --
    denverwater.org/recreation/gro <-- shared Denver Water website for Gross Reservoir
    --
    [the post should not be considered an endorsement of a specific viewpoint]
    H/T @kevin Pilgrim, PE | I specialize in mountain hydrology, hydraulics, fluvial geomorphology, post-fire flood hazard assessment. Contact me for hire if you want to understand flood risk near where you live.
    “An old lesson Denver Water is still reacting to. High intensity wildland fires burn watersheds and deliver sediment to the reservoirs at previously unmeasured rates…
    The droughts, wildfires, floods will only increase these issues.
    Why do [the H/T] say large dams are not the answer? This. The reservoirs are unlikely to last their intended design life as Denver Water realized.
    We can not glue sand to mountains after fires…”
    --
    “The enhanced probability of catastrophic wildfires has increased our need to understand the risk of floods, erosion, and debris and contaminant transport in burned watersheds. This project investigates the relation between rainfall intensity and peak discharge; erosion and deposition processes; and water-quality impacts to minimize the loss of life and property resulting from post-wildfire floods…”
    #water #hydrogy #hydrography #infrastructure #waterresources #watermanagement #wildfire #sediment #sedimentation #runoff #research engineering #design #lifecyle #useage #designlife #erosion #deposition #waterquality #debrisflow #burned #watersheds #rainfall #precipitation #discharge #publicsafety #postwildfire #flood #flooding #extremeweather #climatechange
    @Denver Water | @USGS

    #water #hydrogy #hydrography #infrastructure #waterresources #watermanagement
Next page