#permafrost — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #permafrost, aggregated by home.social.
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🐿️ WATCH: In the #Yukon #permafrost, researchers found 700,000-year-old fossilized #dung from an #extinct ground #squirrel species.
These preserved #burrows contained ancient plant material, #bones, and the oldest #woollymammoth #DNA identified in #NorthAmerica, tracking how #prehistoric #ecosystems shifted over time.
👉 Learn more: https://seethis.tv/post/ancient-ground-squirrel-poop-becomes-a-treasure-trove-for-paleontologists
#animals #archaeology #biology #canada #climate #climatechange #data #discovery #evolution #fossils #genetics #history #paleontology #plants #poop #research #science #technology #tech #mammoth #tksst #video
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🐿️ WATCH: In the #Yukon #permafrost, researchers found 700,000-year-old fossilized #dung from an #extinct ground #squirrel species.
These preserved #burrows contained ancient plant material, #bones, and the oldest #woollymammoth #DNA identified in #NorthAmerica, tracking how #prehistoric #ecosystems shifted over time.
👉 Learn more: https://seethis.tv/post/ancient-ground-squirrel-poop-becomes-a-treasure-trove-for-paleontologists
#animals #archaeology #biology #canada #climate #climatechange #data #discovery #evolution #fossils #genetics #history #paleontology #plants #poop #research #science #technology #tech #mammoth #tksst #video
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🐿️ WATCH: In the #Yukon #permafrost, researchers found 700,000-year-old fossilized #dung from an #extinct ground #squirrel species.
These preserved #burrows contained ancient plant material, #bones, and the oldest #woollymammoth #DNA identified in #NorthAmerica, tracking how #prehistoric #ecosystems shifted over time.
👉 Learn more: https://seethis.tv/post/ancient-ground-squirrel-poop-becomes-a-treasure-trove-for-paleontologists
#animals #archaeology #biology #canada #climate #climatechange #data #discovery #evolution #fossils #genetics #history #paleontology #plants #poop #research #science #technology #tech #mammoth #tksst #video
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🐿️ WATCH: In the #Yukon #permafrost, researchers found 700,000-year-old fossilized #dung from an #extinct ground #squirrel species.
These preserved #burrows contained ancient plant material, #bones, and the oldest #woollymammoth #DNA identified in #NorthAmerica, tracking how #prehistoric #ecosystems shifted over time.
👉 Learn more: https://seethis.tv/post/ancient-ground-squirrel-poop-becomes-a-treasure-trove-for-paleontologists
#animals #archaeology #biology #canada #climate #climatechange #data #discovery #evolution #fossils #genetics #history #paleontology #plants #poop #research #science #technology #tech #mammoth #tksst #video
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🐿️ WATCH: In the #Yukon #permafrost, researchers found 700,000-year-old fossilized #dung from an #extinct ground #squirrel species.
These preserved #burrows contained ancient plant material, #bones, and the oldest #woollymammoth #DNA identified in #NorthAmerica, tracking how #prehistoric #ecosystems shifted over time.
👉 Learn more: https://seethis.tv/post/ancient-ground-squirrel-poop-becomes-a-treasure-trove-for-paleontologists
#animals #archaeology #biology #canada #climate #climatechange #data #discovery #evolution #fossils #genetics #history #paleontology #plants #poop #research #science #technology #tech #mammoth #tksst #video
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Thawing Permafrost Is Releasing Carbon, but Something Unexpected Happens
Permafrost in the Arctic stores large quantities of organic carbon. When the frozen ground thaws or coastal sections…
#NewsBeep #News #Science #AlfredWegenerInstitute #Arctic #Carbon #ClimateChange #GB #Permafrost #UK #UnitedKingdom
https://www.newsbeep.com/uk/771458/ -
Thawing Permafrost Is Releasing Carbon, but Something Unexpected Happens
Permafrost in the Arctic stores large quantities of organic carbon. When the frozen ground thaws or coastal sections…
#NewsBeep #News #Science #AlfredWegenerInstitute #Arctic #Carbon #ClimateChange #GB #Permafrost #UK #UnitedKingdom
https://www.newsbeep.com/uk/771458/ -
Thawing Permafrost Is Releasing Carbon, but Something Unexpected Happens
Permafrost in the Arctic stores large quantities of organic carbon. When the frozen ground thaws or coastal sections…
#NewsBeep #News #Science #AlfredWegenerInstitute #Arctic #Carbon #ClimateChange #GB #Permafrost #UK #UnitedKingdom
https://www.newsbeep.com/uk/771458/ -
Thawing Permafrost Is Releasing Carbon, but Something Unexpected Happens
Permafrost in the Arctic stores large quantities of organic carbon. When the frozen ground thaws or coastal sections…
#NewsBeep #News #Science #AlfredWegenerInstitute #Arctic #Carbon #ClimateChange #GB #Permafrost #UK #UnitedKingdom
https://www.newsbeep.com/uk/771458/ -
[Science News] Rising global #temperatures are leading, in particular, to the melting of #permafrost . This permanently frozen soil stores a massive amount of organic #carbon (1,300 gigatons across the #arctic ) which rivers carry out to sea. However, a recent analysis of marine sediment cores shows that only 10% of this organic carbon is converted into gas by microorganisms, and thus contributes in turn to #globalwarming : https://scitechdaily.com/thawing-permafrost-is-releasing-carbon-but-something-unexpected-happens/
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[Science News] Rising global #temperatures are leading, in particular, to the melting of #permafrost . This permanently frozen soil stores a massive amount of organic #carbon (1,300 gigatons across the #arctic ) which rivers carry out to sea. However, a recent analysis of marine sediment cores shows that only 10% of this organic carbon is converted into gas by microorganisms, and thus contributes in turn to #globalwarming : https://scitechdaily.com/thawing-permafrost-is-releasing-carbon-but-something-unexpected-happens/
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[Science News] Rising global #temperatures are leading, in particular, to the melting of #permafrost . This permanently frozen soil stores a massive amount of organic #carbon (1,300 gigatons across the #arctic ) which rivers carry out to sea. However, a recent analysis of marine sediment cores shows that only 10% of this organic carbon is converted into gas by microorganisms, and thus contributes in turn to #globalwarming : https://scitechdaily.com/thawing-permafrost-is-releasing-carbon-but-something-unexpected-happens/
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[Science News] Rising global #temperatures are leading, in particular, to the melting of #permafrost . This permanently frozen soil stores a massive amount of organic #carbon (1,300 gigatons across the #arctic ) which rivers carry out to sea. However, a recent analysis of marine sediment cores shows that only 10% of this organic carbon is converted into gas by microorganisms, and thus contributes in turn to #globalwarming : https://scitechdaily.com/thawing-permafrost-is-releasing-carbon-but-something-unexpected-happens/
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Thawing Permafrost Is Releasing Carbon, but Something Unexpected Happens
Permafrost in the Arctic stores large quantities of organic carbon. When the frozen ground thaws or coastal sections…
#NewsBeep #News #Science #AlfredWegenerInstitute #Arctic #CA #Canada #carbon #climatechange #Permafrost
https://www.newsbeep.com/ca/894725/ -
Ein KI-Modell des #AWI soll helfen, den globalen #Kohlenstoffkreislauf besser zu verstehen – von den tropischen #Regenwäldern bis zum tauenden #Permafrost.
Komplexe Rückkopplungen im #Erdsystem sollen besser erfasst und fundiertere Prognosen ermöglicht werden. Mit großen Datenmengen, etwa der #Erdfernerkundung und Biomasse-Infos, wird das Modell trainiert.
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A crise climática já move montanhas.
- bsoplvr
https://outraspalavras.net/terraeantropoceno/a-crise-climatica-ja-move-montanhas/
#TerraeAntropoceno #Altastemperaturas #Atmosfera #Capa #Chuvasextremas #Clima #Erupesvulcnicas #Geleiras #Humanidade #Mudanasclimticas #Oceano #Permafrost #Planeta #Precipitao #Terra -
Permafrost Distribution, Degradation, And Potential Mass Movement Cascades In The Western Himalaya Using Machine Learning And Numerical Models
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https://doi.org/10.1038/s44304-026-00217-4 <-- shared paper
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https://doi.org/10.1038/s41598-025-22051-w <-- shared (earlier) paper
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https://doi.org/10.1080/2150704X.2025.2488532 <-- shared (earlier) paper
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H/T @abhinav Alangadan
“Can we develop a first-order understanding of permafrost degradation and glacial lakes exposed to degradation-induced mass movements in the Himalaya?
[The authors] tried to address this question. The study [first link above] integrates machine learning, statistical modeling, and numerical modeling to investigate high-resolution permafrost distribution, potential degradation, and associated mass-movement hazards in the Kinnaur district of Himachal Pradesh, India.
Using rock glaciers as proxies, [they] generated a high-resolution permafrost distribution using machine learning, while potential degradation zones were delineated using the 0°C isotherm as a first-order indicator. [They] further identified glacial lakes located near potentially degrading permafrost zones and reconstructed their bathymetry. A detailed scenario-based GLOF process-chain simulation was then carried out for Kashang Lake using r.avaflow and HEC-RAS.
[Their] results indicate that seven glacial lakes in #Kinnaur are located close to potentially degrading permafrost zones. The simulations further show that a potential GLOF from Kashang Lake could inundate critical downstream infrastructure, including nearly 11 km of National Highway 5…”
#permafrost #distribution #GIS #spatial #mapping #Himalayas #India #Kinnaur #HimachalPradesh #KashangLake #massmovement #engineeringgeology #machinelearning #AI #model #modeling #numericalmodel #glaciallakes #glaciet #glacial #glaciallakeoutburstflood #GLOF #cryosphere #geostatistics #rockglaciers #GeoAI #bathymetry #processchainsimulation #HECRAS #avaflow #risk #hazard #mitigation #riskassessment #infrastructure #HEP #publicsafety #downstream #avalanche -
Häppchen #Klimawissen: #Dauerfrostboden und #Erderwärmung sind keine Freunde.
Der #Klimawandel lässt den #Permafrostboden weltweit im hohen Norden auftauen. Und das hat dramatische Folgen für die Menschen und Unternehmen vor Ort. Welche Konsequenzen hat dies für betroffene Regionen und den #Klimaschutz? 🌍🔥
#Permafrost #CO2 #Umweltschutz #Sibirien #Alaska #GlobalWarming
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Permafrost Formation In A Meandering River Floodplain
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https://doi.org/10.1029/2024AV001175 <-- shared paper
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“... KEY POINTS:
• River meandering resets permafrost development and vegetation succession by eroding old floodplain areas and depositing new land
• On the Koyukuk River, permafrost rapidly forms in new deposits, but it takes over 4 Kyr to develop to its full areal extent of 85%
• The rate of permafrost formation is likely linked to vegetation succession on younger and overbank deposition on older floodplain areas…”
#water #hydrology #permafrost #development #research #Alaska #river #stream #watercourse #channel #meandering #vegetation #spatialanalysis #erosion #floodplain #overbank #deposition #sedimentation #KoyukukRiver #riverdynamics #climate #climatechange #Arctic #environment #landform #geomorphology #dating #spatiotemporal #model #modeling #network #GIS #spatial #mapping -
Tausende Altlasten im arktischen #Permafrost geraten durch die #Erderwärmung unter Druck.
Jahrzehntelang deponierte Industrie dort giftige #Bohrschlämme und #Abfälle – im Glauben, sie blieben dauerhaft eingefroren. Doch der tauende Boden setzt nun #Schadstoffe frei, die über Gewässer in die #Nahrungskette gelangen.
#Buchtipp: Grundwissen für Erwachsene findet Ihr im Buch "Der #Klimawandel für Einsteiger", ISBN: 978-3-738-63782-3
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Eine Aufteilung von Projekten auf zwei oder mehrere "Teilprojekte" scheint die neue Masche zu sein um die notwendige #UVP (#Umweltverträglichkeitsprüfung) ganz oder zumindest teilweise zu erfüllen. Das scheint bei der #TIWAG immer öfter vorkommen.
Auftauender #Permafrost, Rückzug von Gletschern und immer instabilere Berghänge dank #Klimakrise bringt immer öfter Probleme oder Gefahren. #Stauseen im hochalpinen Gelände sind davon besonders betroffen.
Zu den Gefahren wird es womöglich zu einer Gutachterschlacht kommen.Die Wasserableitung aus dem #Ötztal ist offenbar nach wie vor fix eingeplant. Das werden sie allerdings nie bekommen. Nie!
"Flutwelle ins #Kaunertal als Klima-Worst-Case"
https://tirol.orf.at/stories/3296414/#Klimakatastrophe #KaunertalAusbauStoppen #KaunertalKraftwerkStoppen
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Permafrost Thaw Threatens Up To 3 Million People In The Arctic
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https://phys.org/news/2025-01-permafrost-threatens-million-people-arctic.html <-- shared technical article
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https://doi.org/10.1038/s43247-024-01883-w <-- shared paper
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#GIS #spatial #mapping #arctic #climatechange #permafrost #thaw #communities #impacts #humanimpacts #infrastructure #risk #hazard #northernhemisphere #global #threat #Sweden #greenland #alaska #yukon #russia #canada #norway #landuse #melting #ecosystems #livelihoods #firstnation #indigenous #inhabitants #population #cost #economics #policymaking #planning #management #spatialanalysis #adapation #transportation #supplies #waterquality #watersecurity #foodsecurity #disease #contaminants #multifactor #analysis #MFA #social #culture #cultural #transdisciplinary #ground #temperature #physicalprocesses #consequences #mobility #supplies #biogeochemical #water #hydrology #engineeringgeology #erosion #ecosystem #FATE -
Permafrost Thaw Threatens Up To 3 Million People In The Arctic
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https://phys.org/news/2025-01-permafrost-threatens-million-people-arctic.html <-- shared technical article
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https://doi.org/10.1038/s43247-024-01883-w <-- shared paper
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#GIS #spatial #mapping #arctic #climatechange #permafrost #thaw #communities #impacts #humanimpacts #infrastructure #risk #hazard #northernhemisphere #global #threat #Sweden #greenland #alaska #yukon #russia #canada #norway #landuse #melting #ecosystems #livelihoods #firstnation #indigenous #inhabitants #population #cost #economics #policymaking #planning #management #spatialanalysis #adapation #transportation #supplies #waterquality #watersecurity #foodsecurity #disease #contaminants #multifactor #analysis #MFA #social #culture #cultural #transdisciplinary #ground #temperature #physicalprocesses #consequences #mobility #supplies #biogeochemical #water #hydrology #engineeringgeology #erosion #ecosystem #FATE -
Permafrost Thaw Threatens Up To 3 Million People In The Arctic
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https://phys.org/news/2025-01-permafrost-threatens-million-people-arctic.html <-- shared technical article
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https://doi.org/10.1038/s43247-024-01883-w <-- shared paper
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#GIS #spatial #mapping #arctic #climatechange #permafrost #thaw #communities #impacts #humanimpacts #infrastructure #risk #hazard #northernhemisphere #global #threat #Sweden #greenland #alaska #yukon #russia #canada #norway #landuse #melting #ecosystems #livelihoods #firstnation #indigenous #inhabitants #population #cost #economics #policymaking #planning #management #spatialanalysis #adapation #transportation #supplies #waterquality #watersecurity #foodsecurity #disease #contaminants #multifactor #analysis #MFA #social #culture #cultural #transdisciplinary #ground #temperature #physicalprocesses #consequences #mobility #supplies #biogeochemical #water #hydrology #engineeringgeology #erosion #ecosystem #FATE -
Permafrost Thaw Threatens Up To 3 Million People In The Arctic
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https://phys.org/news/2025-01-permafrost-threatens-million-people-arctic.html <-- shared technical article
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https://doi.org/10.1038/s43247-024-01883-w <-- shared paper
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#GIS #spatial #mapping #arctic #climatechange #permafrost #thaw #communities #impacts #humanimpacts #infrastructure #risk #hazard #northernhemisphere #global #threat #Sweden #greenland #alaska #yukon #russia #canada #norway #landuse #melting #ecosystems #livelihoods #firstnation #indigenous #inhabitants #population #cost #economics #policymaking #planning #management #spatialanalysis #adapation #transportation #supplies #waterquality #watersecurity #foodsecurity #disease #contaminants #multifactor #analysis #MFA #social #culture #cultural #transdisciplinary #ground #temperature #physicalprocesses #consequences #mobility #supplies #biogeochemical #water #hydrology #engineeringgeology #erosion #ecosystem #FATE -
Permafrost Thaw Threatens Up To 3 Million People In The Arctic
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https://phys.org/news/2025-01-permafrost-threatens-million-people-arctic.html <-- shared technical article
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https://doi.org/10.1038/s43247-024-01883-w <-- shared paper
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#GIS #spatial #mapping #arctic #climatechange #permafrost #thaw #communities #impacts #humanimpacts #infrastructure #risk #hazard #northernhemisphere #global #threat #Sweden #greenland #alaska #yukon #russia #canada #norway #landuse #melting #ecosystems #livelihoods #firstnation #indigenous #inhabitants #population #cost #economics #policymaking #planning #management #spatialanalysis #adapation #transportation #supplies #waterquality #watersecurity #foodsecurity #disease #contaminants #multifactor #analysis #MFA #social #culture #cultural #transdisciplinary #ground #temperature #physicalprocesses #consequences #mobility #supplies #biogeochemical #water #hydrology #engineeringgeology #erosion #ecosystem #FATE -
Das Tauen der #Permafrostböden in der #Arktis gefährdet bis zu drei Millionen Menschen.
https://www.zeit.de/wissen/2025-01/klimawandel-permafrost-boden-arktis-gefahrenstoffe
#Erosion, #Erdrutsche und die Freisetzung von #Schadstoffen bedrohen #Infrastruktur, Wasser- und #Nahrungsversorgung.
Auch #Krankheitserreger aus dem gefrorenen Boden könnten gesundheitliche Risiken bergen. Diese Entwicklungen sind keine #Zukunftsprobleme, sondern bereits Realität.
#Klimawandel #Arktisforschung #Permafrost #Umweltkrise #Erderwärmung #Methan
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Climate Change Mitigation: Planting Trees in Artic Worsens Global Warming
Forest restoration and tree plantation is a well-established strategy for mitigation of climate change............
#Arctic #Carbon #CarbonDioxide #Carbonemission #climate #Climateaction #ClimateChange #CO2 #forest #GlobalWarming #permafrost #Treeplantation #UmeshPrasad
Umesh Prasad -
#Permafrost Thaw May Cause #Arctic River Erosion to Speed Up
October 09, 2024
"Permafrost, the thick layer of perennially frozen ground that covers much of the Arctic, slows down the migration of Arctic rivers, according to a new Caltech study. River migration is a common process in which a river's path meanders over time due to erosion of the riverbanks. This rerouting, which can also occur in #SuddenFloods, poses a threat for many communities that live along and depend on rivers. The findings also have implications for how the Arctic region will be impacted by a warming climate as permafrost thaws over time.
"The research was conducted in the Caltech laboratory of Michael Lamb, professor of geology, and is described in a paper appearing in the journal Nature on October 9.
"Led by graduate student Emily Geyman, the study focused on the #KoyukukRiver, a large tributary of the #YukonRiver that winds for hundreds of miles through interior Alaska. There was debate within the scientific community about whether the frozen soil along the riverbanks serves to fortify the banks against erosion or to promote it.
"'Large rivers like the Yukon or the Amazon can move tens to hundreds of feet per year,' Geyman says. "Arctic rivers in particular differ from temperate rivers because they need to thaw the material of their banks before they can pick that material up and move it.'
"Due to #ClimateChange, permafrost is slowly thawing over decades. But a river can experience drastic natural changes within a single year, with flow conditions changing from very cold and fast in early spring to warm and slow a few months later. Geyman and her collaborators leveraged these major changes that take place within a single season to gain a glimpse into how the rivers will behave in response to climate change decades or centuries into the future.
"In spring, the Koyukuk River swells in volume from snowmelt, flowing with fast, cold water. For more temperate rivers, a fast flow means more erosion. But in the Arctic, the temperature of the water matters—cold water is unable to thaw the frozen banks in order to migrate.
"In the new study, Geyman and her collaborators used satellite imagery of the Koyukuk over the past several years and developed a technique to decode high-resolution changes from the images. The team hypothesized that if permafrost was slowing the river's migration, they should only see migration later in the summer when the river water has warmed up. Their hypothesis matched with the satellite data, suggesting that permafrost does, in fact, slow down river migration.
"Next, the team compared sections of the river that flow through permafrost with those that do not. The Koyukuk is special because it traverses a patchwork of both permafrost and unfrozen ground. The team traveled to the Arctic to map the erosion on various bends of the river and found that sections without permafrost migrated twice as fast as analogous riverbends through permafrost terrain.
"The research is part of a larger effort to understand the dynamics of rivers and how they transport carbon, nutrients, and other materials trapped in the soil.
"'River migration has implications for local communities and infrastructure, and also for the Arctic environment,' Lamb says. 'About 1,500 gigatons of #carbon are stored in the frozen permafrost—about twice as much carbon as in the atmosphere, for comparison. There is also #mercury frozen in the soil that could be liberated into rivers as permafrost thaws. We are, ultimately, trying to understand what happens to these elements in the context of river erosion.'
"The work was a collaboration with local Alaska #Native communities, in particular from the town of #Huslia."
Read more:
https://www.caltech.edu/about/news/permafrost-thaw-may-cause-arctic-river-erosion-to-speed-up#GlobalWarming #PermafrostMelt #MercuryPoisoning #CarbonSinks #WaterIsLife #ClimateChange #Arctic #Alaska
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Bereits vor Jahren wurde erkannt, dass regional einzelne #Permafrostgebiete auffällig stark tauen. Sie werden zuerst an die #globaleErwärmung verloren gehen.
#Permafrostböden sind dagegen kein globales Kippelemente. Das #Auftauen erfolgt proportional zur globalen #Erwärmung, ohne einen plötzlichen #Kollaps.
#Klimawandel #Permafrost #Umwelt #Forschung #Erderwärmung
#Werbung: Grundwissen für Erwachsene:
"Der Klimawandel für Einsteiger"
https://buchshop.bod.de/der-klimawandel-fuer-einsteiger-tino-eberl-9783757895099 -
Uralte Pathogene aus dem Permafrost sind reale Gefahr
2003 wurden Bakterien wiederbelebt, die aus dem 750 000 Jahre alten Eis des Qinghai-#Tibet-Plateaus stammten. 2014 erwachte ein riesiges »Zombie«-Virus aus dem 30 000 Jahre alten sibirischen #Permafrostboden zu neuem Leben. Und im Jahr 2016 wurde ein #Milzbrand-Ausbruch unter #Rentiere'n in #Westsibirien darauf zurückgeführt, dass Sporen von #BacillusAnthracis aus dem tauenden #Permafrost entweichen konnten.
https://www.spektrum.de/news/uralte-pathogene-aus-dem-permafrost-sind-reale-gefahr/2166351
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#Researchers wanted to ascertain how #RisingTemperatures & thawing #permafrost are affecting the movement of the #Arctic ’s large rivers. A #NewStudy #published in #Nature #ClimateChange found that such #rivers channel #migration is actually decreasing. Rivers across #Alaska & #Canada ’s #Yukon & #NorthwestTerritories migrated 20% less between 1972 and 2020, a period when the region’s temperatures spiked.
https://eos.org/articles/as-the-arctic-warms-these-rivers-are-slowing-down
#Geomorphology #Geology #Waterways #Hydrologists #science #water
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Loch im #Permafrost
...vermuteten, dass diese Krater möglicherweise durch #Gasausbrüche gebildet wurden, denn wenn der #Permafrostboden der #Arktis auftaut, setzt er große Mengen Methan frei. Meist geschieht dies unbemerkt, aber selten bilden sich "Druckkammern" aus #Methan, das sich unter immer höherem Druck im Untergrund sammelt. Irgendwann kommt es zu einer Gasexplosion, die Eis und Erde förmlich aus dem Untergrund heraussprengt.
https://www.wissenschaft.de/bildervideos/bild-der-woche/loch-im-permafrost/