#naturalhazard — Public Fediverse posts

Impact Of Floods On Surface Water Quality - A Systematic Review And Comprehensive Assessment
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https://doi.org/10.1016/j.jhydrol.2026.135916 <-- shared paper
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https://www.epa.gov/system/files/documents/2024-12/2024-12.pdf <-- shared paper
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“Floods, as extreme flow events, are among the costliest and devastating natural hazards. Among the various domains impacted by flooding, environmental degradation, particularly the deterioration of water quality (WQ), is one of the most impacted yet often overlooked. Therefore, it is essential to understand the nature and source of water pollution associated with flooding. This study aims to evaluate and assess multiple studies conducted globally to determine the impact of floods on WQ. A literature review and assessment of 66 studies published between 2007 and 2026 was conducted using the total comprehensiveness score (TCS). To support the scoring process, studies that scored more than 70% of the maximum achievable TCS (15.4) are considered the most detailed and comprehensive in addressing the objectives of this review. 16 studies achieved a TCS above 15.4, indicating that a limited number of studies incorporate a broader set of factors in this domain. A higher number of studies were conducted post the year 2021, highlighting both scientific progress and a growing focus on WQ impacts from disasters such as floods, beyond the traditionally emphasized socio-economic loss. Among the shortlisted studies, fluvial floods are the most frequently examined, followed by pluvial floods and coastal floods. During fluvial floods, turbidity increased by up to two orders of magnitude, while nutrient concentrations (TN, TP) typically rose by ∼ 10–30%. In contrast, pluvial floods were characterised by dilution-driven decreases in EC and TDS, with DOX, BOD and COD showing variable responses across flood types. This review evaluates flood impacts on WQ, catchment characteristics, and sources of WQ modification. The findings of the research reveal that not all WQ parameters are responsible for WQ degradation during every flood event. Rather, it is a combination of certain parameters that leads to deteriorated WQ. WQ degradation depends on interacting factors such as flood duration, extent, depth, and flow dynamics. In overall, this study provides an overview of the multiple cascading impacts of floods on WQ, along with a detailed perspective on the set of criteria that should be considered in future research…”
#water #hydrology #hydrography #flood #flooding #criteriaassessment #waterpollution #waterquality #parameters #extremeflow #waterresources #extremeweather #waterresources #watermanagement #global #literaturereview #morphology #source #type #watersecurity #research #papers #compilation #humanimpacts #PRISMA #spatiotemporal #fluvial #pluvial #coast #coastal #risk #hazard #riverine #climatechange #EnvironmentalScience #Research #ClimateResilience #floodtype #pollution #naturalhazard

#NoNaturalDisasters [UN]
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https://www.undrr.org/our-impact/campaigns/no-natural-disasters | https://www.nonaturaldisasters.com/ <-- shared technical articles
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#Resilience #ClimateAction #Governance #risk #hazard #riskassessment #naturalhazard #disaster #humanimpacts #engineeringgeology #NoNaturalDisasters #natural #nature #earthquake #storm #flood #flooding #tsunami #volcano #desertification #wildfire #fires #publicsafety #planning #policy #preparedness #ISO31000 #monitoring #buildingcodes #engineering #landuse #earlywarning #humanmaderisk #exposure #vulnerability #socioeconomic #ecosystems #habitat #livelihoods #farming #infrastructure #buildings #structures #industrial #cost #recovery #economics #homes #extremeweather #hurricane #tornado #resilience #sustainability #poverty #assessment #UNDRR #UN #riskreduction
@United Nations Office for Disaster Risk Reduction

Pan-European Assessment Of Coastal Flood Hazards
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https://doi.org/10.5194/nhess-26-1859-2026 <-- shared paper
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#coast #coastal #flood #flooding #model #modeling #Europe #UK #naturalhazard #extremeweather #bathtub #dynamic #stormsurge #remotesensing #GIS #spatial #mapping #spatialanalysis #spatiotemporal #risk #hazard #assessment #water #hydrology #marine #hydrography #hydrograph #meansealevel #MSL #tides #waves #tidal #parameters #DEM #dynamicmodels #floodplain #literaturereview

New Zealand [3D] Community Fault Model [CFM] [geologic spatial/visualisation]
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https://geo3d.pgi.gov.pl/NZ_CFM/index.html <-- shared New Zealand Community Fault Model page
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https://www.gns.cri.nz/research-projects/new-zealand-community-fault-model/ <-- shared community fault model details
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https://www.gns.cri.nz/data-and-resources/new-zealand-community-fault-model/ <-- shared #GNS downloadable open dataset, ‘NZ CFM v1.0 is a two- and three-dimensional representation of active and potentially active fault zones along the New Zealand plate boundary.’
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[my upbringing and geology uni degrees were in NZ]
H/T @earth Sciences New Zealand
#geology #maps #NaturalHazards #3D #interactive #faultlines #earthquakes #tech #technology #NewZealand #GIS #spatial #mapping #visualisation #earthquakes #faulting #faultzone #CommunityFaultModel #CFM #opendata #Geo3D #movement #attributes #geometry #risk #hazard #naturalhazard
@GNS Science | @NWIA | @earth Sciences New Zealand

United States Tsunami Alerting Analysis, 2026 Report
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https://mil.wa.gov/asset/69a08a91462bf/United-States-Tsunami-Alerting-Analysis-2026-updated.pdf <-- shared report PDF
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#naturalhazard #earthquake #USA #alert #monitoring #tsunami #risk #hazard #humanimpacts #lossoflife #death #infrastructure #damage #cost #economics #coast #coastal #nationwide #hazardassessment #emergencymanagement #GIS #spatial #instrumentation #spatialanalysis #model #modeling #operations #geography geomorphometry demographics #geologichazard #alertsystems #warning #ocean #marine #wave #emergencyresponse #planning #messaging #response
@National Tsunami Hazard Mitigation Program

Ice-Patch Collapse And Early-Warning Implications From A Himalayan Flash Flood - Emerging Cryo-Hydrological Hazards Under Deglaciation
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https://doi.org/10.1038/s44304-026-00191-x
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https://youtu.be/zZXER7DocfY?si=lYOE_a6YwigP3-mB
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#GIS #spatial #mapping #glacier #glacial #cryosphere #risk #hazard #flood #flooding #flashflood #earthobservation #cryohydrology #ice #snow #water #hydrogy #Himalaya #Himalayan #extremeweather #monitoring #risk #hazard #forecasting #DharaliFlashFlood #CryosphereScience #Deglaciation #EarlyWarning #RemoteSensing #Himalayas #NaturalHazards #ClimateChange #GlacierResearch #OpenScience #highmountain #mountain #slope #steepness #erosion #fluvial #nivation #Uttarakhand #India #SrikantaGlacier #DEM #elevation #satellite #chronology #reconstruction #ablation #debris #sedimentation #debrisflow #meltwater #debris #surge #massmovement #engineeringgeology #cryospherichazard #terrain #spatialanalysis #spatiotemporal #earlywarning #naturalhazard #channel #topography #geography #hydrogeomorphology #geomorphology #Dharali

Growing Meltwater Reservoirs – Glacial Lakes Are Both A Resource And A Habitat Worthy Of Protection
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https://www.uni-potsdam.de/en/headlines-and-featured-stories/detail/2026-01-28-growing-meltwater-reservoirs-glacial-lakes-are-both-a-resource-and-a-habitat-worthy-of-protection <-- shared technical article
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https://doi.org/10.1038/s44221-025-00578-6 <-- shared paper
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https://github.com/geveh/LakeVolumes <-- shared GitHub ‘code base’
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#glaciallakes #GLOF #geomorphology #glaciers #hydrology #waterresources #glacier #melting #retreating #hydrogeomorphology #GIS #spatial #mapping #global #spatialanalysis #global #cryosphere #ice #water #hydrology #mountains #highaltitude #naturalresource #freshwater #reservoir #sediment #sedimentation #spatiotemporal #remotesensing #earthobservation #landcover #Arctic #coastal #meltwater #lake #longevity #watersecurity #risk #hazard #ecosystem #habitat #naturalhazard #planning #tourism #economy #usecase #watersupply #worldwide #population #demographics #glacial
@University of Potsdam | @University Of Leeds

Comparing Flood Inundation Map Features and Diagnosing Decision Support Design Challenges
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https://doi.org/10.1002/hyp.70362 <-- shared paper
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#GIS #spatial #mapping #climatechange #extremeweather #pluvial #fluvial #water #surfacewater #precipitation #flood #flooding #floodinnundation #innundation #NOAA #FIM #floodinnundationmaps #model #modeling #spatialanalysis #spatiotemporal #floodresponse #response #naturalhazard #monitoring #forecasting #forecast #visualisation #FIMAN #remotesensing #Copernicus #impactassessment #research #emergencymanagement #humanimpact #safety #publicsafety #risk #hazard #infrastructure #FloodMapper #floodwatch #flashflood
@FEMA | @NOAA | @USGS |

How to Download and Visualize NASA-ISRO NISAR Data in QGIS | Step-by-Step Tutorial [shared]
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https://youtu.be/oRTplHPf_T0 <-- shared video tutorial
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https://github.com/opengeos/qgis-nasa-earthdata-plugin <-- shared NASA Earthdata Plugin for QGIS
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https://science.nasa.gov/mission/nisar/ <-- shared #NASA NISAR mission home page
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H/T Qiusheng Wu
#remotesensing #earthobservation #tutorial #training #onlinelearning #download #visualisation #NISAR #opendata #satellite #NASA #Earthdata #QGIS #plugin #SAR #icemovement #ecosystems #vegetation #biomass #naturalhazard #risk #hazard #NetCDF #spatialvisualisation
@QGIS | @nasa

Thirty Years of the U.S. National Land Cover Database - Impacts and Future Direction
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https://doi.org/10.14358/PERS.25-00121R2 <-- shared paper
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“Editor's choice article for the October Issue of Photogrammetric Engineering and Remote Sensing.”
#GIS #spatial #mapping #remotesensing #opendata #earthobservation #landcover #USA #NLCD #MRLCC #history #datacollection #impervioussurface #classifaction #landform #forestcanopy #fedscience #fedservice #deeplearning #AI #spatialanalysis #change #monitoring #usecase #research #landmanagement #management #policy #planning #support #agriculture #urbanplanning #environment #ecosystems #biodiversity #conservation #water #hydrology #humanhealth #risk #hazard #soils #naturalhazard #spatiotemporal #landchange #forestry #watermanagement #waterquality #publicsafety #groundwater #NCLA #wildfire #stormwater #extremeweather
#USGS #EROS #NASA #USFS

Thirty Years Of The U.S. National Land Cover Database [NLCD] - Impacts And Future Direction
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https://doi.org/10.14358/PERS.25-00121R2 <-- shared paper
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https://www.usgs.gov/centers/eros/science/annual-national-land-cover-database <-- shared #USGS Annual National Land Cover Database (open data)
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https://www.usgs.gov/centers/eros/science/annual-national-land-cover-database <-- get the open NLCD data
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#GIS #spatial #mapping #history #continuity #improvement #LandCover #Landuse #change #Landsat #NLCD #NationalLandCoverDatabase #earthobservation #remotesensing #landchange #monitoring #fedscience #publicgood #fedopendata #opendata #history #fedservice #MRLCC #USA #download #impervious #surface #forestcanopy #mosaics #accuracy #deeplearning #AI #research #landmanagement #agriculture #water #hydrology #cropland #biodiversity #conservation #urban #planning #publichealth #naturalhazard #assesment #risk #hazard #mitigation #national #nation #multiple #usecase
#USGS | #EROS

I'm going to take advantage of the current #eruption on Mt #Etna to discuss some of the challenges of #modelling #lava flows. Buckle up (or just silence me) because this is going to be a long thread.

First of all, why do we want to model lava flows? The answer most definitely isn't «because we can», since —as I'm going to explain momentarily— we actually cannot. Still having an idea about how lava flows and sets in place is a powerful tool for the assessment (and possibly mitigation) of the associated #hazard and #risk: if we can tell how lava flows, we can tell which areas are going to be reached by the lava, and hopefully also improve the design of tactical and strategic actions that can be taken to minimize the damage.

(Of course, whether or not those actions will then be taken is an entirely different matter, but that's mostly politics, not science.)

1/

#MtEtna #modelling #simulation #CFD #NaturalHazard #hazardAssessment #riskAssessment #riskMitigation

Earthquake Hazard Uncertainties Improved Using Precariously Balanced Rocks
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https://doi.org/10.1029/2020AV000182 <-- shared paper
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#GIS #spatial #mapping #spatialanalysis #geomorphometry #probabilistic #seismichazard #analysis #PSHA #groundmotion #earthquake #risk #hazard #naturalhazard #quantitative #fault #faulting #geology #engineeringgeology #empirical #balancedrocks #PBR #California #cosmogenic #10Be #dating #model #modeling #hazardmodel #probability #infrastructure #cost #economics

Flood Protection Based On Historical Records Is Flawed – We Need A Risk Model Fit For Climate Change
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https://theconversation.com/flood-protection-based-on-historical-records-is-flawed-we-need-a-risk-model-fit-for-climate-change-212454 <-- shared technical article
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#GIS #spatial #mapping #water #hydrospatial #hydrology #flood #flooding #model #modeling #planning #mitigation #naturalhazard #humanimpacts #climatechange #extremeweather #regulations #prediction #floodengineering #floodrisk #floodriskassessment #assessment #risk #hazard #riskassessment #floodmanagement #floodprotection #floodsafety #publicsafety #spatialanalysis #spatiotemporal #weatherforecast #climatechangesolutions #climateadaptation #infrastructure #flooddamage

First-Ever Award For Natural Resource Restoration By FEMA's Hazard Mitigation Program [Puerto Rico]
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https://coralreef.noaa.gov/issues/nature_based_restoration.html <-- shared technical article
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#GIS #spatial #mapping #puertorico #coral #hurricane #hurricanemaria #naturalhazard #naturaldisasters #mitigation #spatialanalysis #hazardmitigation #fema #coralreefs #coralrestoration #coraldisease #earthquakes #storm #stormsurge #extremeweather #stonycoral #restoration #sanjuan #naturalresource #coast #coastal #coastalengineering #coastalprotection #coastalcommunities #funding #waveenergy #artificialreef #marine #nearshore #shoreline #currents #erosion #flooding
@femaregion2 @usgs

NOAA And NSF To Create Research Center In Response To Insurance Industry Climate Needs
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https://www.noaa.gov/stories/noaa-and-nsf-to-create-research-center-in-response-to-insurance-industry-climate-needs <-- shared article
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#GIS #spatial #mapping #model #modeling #climatechange #business #data #future #research #insuranceindustry #property #insurance #building #science #events #risk #hazard #disaster #extremeweather #extremeheat #naturalhazard #economy #economicimpacts #publicsafety #damage #impact #impactassessment #climate #weather #water #hydrology
@noaa #NSF #NOAA