#sédiments — Public Fediverse posts

#Freshwater #lakes,like #Flughafensee #Berlin, play a complex #role in #globalwarming. Their #sediments are important #carbonsinks. However, they also release #CO2/#methane through microorganism activities. Furthermore, #lakeswarmup faster than surrounding air. L. Huang et al.(2024) address this and predict #shifts in #aquaticspecies #distributions and rearrangements of #freshwaterhabitats.
©#StefanFWirth

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Ref
https://doi.org/10.1038/s41561-024-01491-5

Photos
©S.F.Wirth

NASA Earth Observatory image of the day

Cañon Fiord’s Whirling Waters

https://science.nasa.gov/earth/earth-observatory/canon-fiords-whirling-waters/

Credits: images by Lauren Dauphin, using Landsat data from the U.S. Geological Survey.

#Earth #NASA #NASAEarthObservatory #science #news #CañonFiord #CanadianArcticArchipelago #Canadian #Arctic #Archipelago #ice #sediments #water #waters

RE: https://mastodon.social/@arstechnica/116108759807158445

Which #geochronological #method helps to determine the #age of #sediments as precisely as possible in order to reconstruct biotic, ecological, and #climatic relationships over the course of geological eras? R. T. Tucker et al. (2025) were able to precisely date the #eggshells of non-avian #dinosaurs using a novel LA-ICP-MS U-Pb #calcitedating method. This enabled them, for the first time, to date the Upper Cretaceous strata of the #GobiBasin (Mongolia) radioisotopically.
©This text#StefanFWirth

Stratigraphic Evidence For Modern-Like Glacier Extents In South-Central Alaska Within The Last Glacial Period (MIS 3)
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https://doi.org/10.1111/bor.70043 <-- shared paper
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https://www.nps.gov/articles/000/ancient-glacier-change.htm <-- shared @NPS technical article
--
#glacier #Wisconsinan #glaciations #alaska #iceage #sediments #moraines #geology #stratigraphy #model #cryosphere #ice #snow #sedimentary #Chitina #CopperRiver #proglacial #water #hydrology #fluvial #glaciofluvial #glaciolacustrine #fans #Holocene #geomorphology #geomorphometry #landform #hydrogeomorphology #sedimentology #stratigraphic #sampling
@NPS

Probabilistic Modeling Of InSAR-Derived Land Subsidence Hazard In New York City For Transportation Infrastructure Damage Risk Assessments
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https://doi.org/10.1016/j.jag.2026.105118 <-- shared paper
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#NewYork #NewYorkCity #NYC #GIS #spatial #mapping #subsidence #InSAR #radar #elevation #remotesensing #spatialanalysis #spatiotemporal #model #modeling #probabilistic #framework #risk #hazard #infrastructure #transportation #subway #highway #roads #airports #LandSubsidence #damage #cost #economics #JFK #LaGuardia #runways #buildings #flood #flooding #floodrisk #sealevelrise #SLR #impacts #lowlying #reclaimed #urban #monitoring #mitigation #maintenance #coast #coastal #delta #sediments #megacity

A thought-provoking and wide-ranging talk yesterday by Andy Wickert, University of Minnesota.

His group has tracked changes in drainage patterns during the final deglaciation of Minnesota (~11 thousand years ago) to changes in erosion rates since the advent of mechanical agriculture.

#UMN #McGillU #Minnesota #MississippiRiver #Glaciation #Sediments

The Arctic Coastal Erosion Model - Overview, Developments, and Calibration at Drew Point, Alaska
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https://doi.org/10.22541/essoar.174086594.45589925/v1 <-- shared paper
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#Alaska #permafrost #coastalerosion #Arctic #permafrost #modeling #climateresilience #coast #coastal #erosion #sloughing #coastline #polaramplification #climatechange #ArcticCoastalErosion #ACE #model #modeling #oceanographic #atmospheric #oceanic #finiteelement #thermoabrasion #storm #stormsurge #fieldwork #calibration #geomechanics #sediments #geochemistry
#SandiaNationalLaboratories #USGS

Hwangto (Pedology 🟤)

Hwangto, a Korean loess soil, is a yellow-coloured soil, which contains high levels of potassium chloride and calcium. Hwangto is sometimes called a 'living soil' for its medical effects. Korean loess called “Hwangto”or “the red yellow soil or earth” has been a basic element or nourishment which has cultivated Korean nature and cultural heritages. Hwangto reve...

https://en.wikipedia.org/wiki/Hwangto

#Hwangto #Pedology #Sediments #Glaciology #TypesOfSoil #AeolianLandforms

#WeekendReading: Hennebert and Lees on environmental gradients in carbonate #sediments around the North Sea. It's a rather early work I missed until now, it has its shortcomings, but there are some interesting things there.

Link: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-3091.1991.tb01012.x

Desert pavement (Deserts 🏜️)

A desert pavement, also called reg, serir, gibber, or saï is a desert surface covered with closely packed, interlocking angular or rounded rock fragments of pebble and cobble size. They typically top alluvial fans. Desert varnish collects on the exposed surface rocks over time. Geologists debate the mechanics of pavement formation and their age.

https://en.wikipedia.org/wiki/Desert_pavement

#DesertPavement #Deserts #Sediments #AeolianLandforms

Grand Canyon Landslide-Dam And Paleolake Triggered By The Meteor Crater Impact At 56 Ka
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https://doi.org/10.1130/G53571.1
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#geology #geologichistory #landslide #dam #grandcanyon #USA #paleolake #water #hydrology #meteor #crater #engineeringgeology #massmovement #Nankoweap #ColoradoRiver #earthquake #seismic #dating #radiocarbon #Pleistocene #sediments #fieldwork #elevation #geomorphology #geomorphometry

Glacial Landforms And Rock Types [In Puget Sound Area, Washington State, As Seen With LiDAR]
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https://wa100.dnr.wa.gov/puget-lowland/glacial-landforms <-- shared technical article
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[my old stomping grounds as an engineering geologist, back when the PSLC first came out with its then ‘as if by magic’ LiDAR products around the Puget Sound…]
#geology #landform #geomorphometry #GIS #spatial #mapping #geomorphology #glacial #glacier #LiDAR #engineeringgeology #remotesensing #Seattle #PugetSound #WashingtonState #deposition #rock #sediments #till #water #hydrology #hydrography #melting #outwash #moraine #erratic #striation #boulder #icesheet #kettle #lake #WADNR

Desert pavement (Deserts 🏜️)

A desert pavement, also called reg, serir, gibber, or saï is a desert surface covered with closely packed, interlocking angular or rounded rock fragments of pebble and cobble size. They typically top alluvial fans. Desert varnish collects on the exposed surface rocks over time. Geologists debate the mechanics of pavement formation and their age.

https://en.wikipedia.org/wiki/Desert_pavement

#DesertPavement #Deserts #Sediments #AeolianLandforms

Groundwater Dominates Snowmelt Runoff And Controls Streamflow Efficiency In The Western United States
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https://doi.org/10.1038/s43247-025-02303-3 <-- shared paper
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#GIS #spatial #mapping #water #hydrology #fedscience #climatechange #snowmelt #waterresources #watersupply #management #planning #watersecurity #USWest #Rockies #snow #winter #mountain #catchment #dating #tritium #spatialanalysis #spatiotemporal #runoff #streamflow #infiltration #model #modeling #geology #geomorphology #groundwater #storage #surfacewater #streamwater #precipitation #bedrock #soils #sediments #permability #porosity #watershed #subsurfaceflow #storage #climate #future #landscape

14-May-2025
#Alaska: Ancient cave sediments provide new #climate clues
Discovery of 20,000-year-old cave #sediments on Prince of Wales Island offers rare land-based evidence of ancient #meltwater events

https://www.eurekalert.org/news-releases/1083622
#science #paleoClimate #glaciers

Hwangto (Glaciology 🗻)

Hwangto, a Korean loess soil, is a yellow-coloured soil, which contains high levels of potassium chloride and calcium. Hwangto is sometimes called a 'living soil' for its medical effects. Korean loess called “Hwangto”or “the red yellow soil or earth” has been a basic element or nourishment which has cultivated Korean nature and cultural heritages. Hwangto re...

https://en.wikipedia.org/wiki/Hwangto

#Hwangto #Pedology #Sediments #Glaciology #TypesOfSoil #AeolianLandforms

Ancient Lakes And Rivers Unearthed In Arabia's Vast Desert
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https://phys.org/news/2025-04-ancient-lakes-rivers-unearthed-arabia.html <-- shared technical article
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https://doi.org/10.1038/s43247-025-02224-1 <-- shared paper
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#GIS #spatial #mapping #water #hydrology #quaternary #desert #geomorphology #landforms #geomorphometry #Arabia #climatechange #RubalKhali #SaudiArabia #holocene #model #modeling #spatialanalysis #spatiotemporal #earthsystemmodel #geology #lacustrine #fluvial #sediments #sedimentary #flood #flooding #lakes #AfricanMonsoon #rivers #paleohydrology #stratigraphy #remotesensing #landsat #earthobservation #dating #delta #cliff #terrace #rainfall #precipitation

USGS Releases Assessment Of Undiscovered Oil & Gas Resources In Wyoming, Southern Montana
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https://www.usgs.gov/news/national-news-release/usgs-releases-assessment-undiscovered-oil-and-gas-resources-wyoming <-- shared article
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https://doi.org/10.3133/fs20243049 <-- shared publication
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https://www.sciencebase.gov/catalog/item/65032556d34ed30c2058be2d <-- shared open data
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https://api.sciencebase.gov/geoserver/ows?service=wms&version=1.3.0&request=GetCapabilities&namespace=sb-65032556d34ed30c2058be2d <-- shared spatial service
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#GIS #spatial #mapping #oilandgas #OG #naturalresources #oil #gas #fedscience #model #modeling #Wyoming #Montana #assessment #WindRiverBasin #BighornBasin #PowderRiverBasin #exploration #undiscovered #energy #energysupply #geology #structuralgeology #sediments #lithology #reserves
@USGS

OnlineFirst - "Slippery substances: Accreting alternative chemical knowledges in a heavy industry port" by @ameliahine

@awi
#chemicalstudies #sediments #seabed #chemical #port #decarbonisation #hifmb 

https://journals.sagepub.com/doi/full/10.1177/25148486251323455

Pétrole : les preuves de son origine biologique
Par François Baudin, Encyclopédie de l’environnement
https://www.encyclopedie-environnement.org/vivant/preuves-origine-biologique-petrole/
#science #nature #vie #pétrole #sédiments #végétation #biologie #écologie #environnement #encyclopédie #géologie #géographie

New #DNA research examines predecessors of Red Lady of El Mirón.

#archeogenomics #sedaDNA #sediments #Pleistocene

https://phys.org/news/2025-02-dna-predecessors-red-lady-el.html

New Study Tracks The 100,000-Year Journey Of Underground Water
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https://scitechdaily.com/new-study-tracks-the-100000-year-journey-of-underground-water/ <-- shared technical article
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https://doi.org/10.1038/s44221-024-00366-8 <-- shared paper
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[there is an old saw along the (flow)lines of "Surface water is just the expression of groundwater on the land"]
#GIS #spatial #mapping #water #hydrology #subsurface #groundwater #watercycle #waterresources #streamflow #surfacewater #connection #model #modeling #CONUS #USA #baseflow #sediments #aquifers #alluvium #flow #waterresources #subbasins #watershed #climatechange #contamination #rainfall #precipitation #snowmelt #continental

Siltation (Earth sciences 🌍)

Siltation is water pollution caused by particulate terrestrial clastic material, with a particle size dominated by silt or clay. It refers both to the increased concentration of suspended sediments and to the increased accumulation of fine sediments on bottoms where they are undesirable. Siltation is most often caused by soil erosion or sediment spill. It is sometimes r...

https://en.wikipedia.org/wiki/Siltation

#Siltation #Sediments #EarthSciences #WaterPollution

'The Nastiest Soils On Earth' Are Getting Recognized As A Bigger Problem
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https://phys.org/news/2024-11-nastiest-soils-earth-bigger-problem.html <-- shared technical article
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https://lnu.diva-portal.org/smash/record.jsf?pid=diva2%3A1895656&dswid=-9242 <-- link to doctoral thesis
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#acidsulfatesoils #acidrockdrainage #microbialecology #acidophiles #oxidation #sediments #genesequences #acidsulfate #soils #humanimpacts #risk #hazard #waterquality #ecosystem #health #geochemistry #microbiology #mitigation #sulfide #coast #coastal #water #hydrology #pH #acids #metals #rainfall #snowmelt #dissolution #precipitation #waterbodies #plants #fish #fisheries #heavymetals #aluminum #fishkill #mortality #oxidation #bioremediation

Morphology, Timing, And Drivers Of Post-Glacial Landslides In The Northern Yellowstone Region
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https://doi.org/10.1002/esp.5943 <-- shared paper
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#GIS #spatial #mapping #spatialanalysis #spatiotemporal #geomorphometry #geomorphology #massmovement #landslides #elevation #slope #triggers #water #hydrology #engineeringgeology #slopefailure #remotesensing #LiDAR #seismogenic #climatechange #glacial #sediments #YellowstoneNationalPark #Yellowstone #temporal #risk #hazard #mitigation #prediction #stratigraphy #surfaceroughness #debuttressing #Pleistocene #Holocene #moisture #historic #erosion #undercutting #records #fieldwork #mountains #deglaciation

Sediments — Castle Liebenstein, Thuringia, Germany. October 2016, iPhone 5s.

https://pixelfed.social/i/web/post/718614371584774192

#vintagestyle #Germany #Thuringia #liebenstein #sediments #castle