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#Permafrost

2 posts2 participants0 posts today
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💧🌏 Greg Cocks

Kinematic Evolution Of A Large Paraglacial Landslide In The Barry Arm Fjord Of Alaska
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doi.org/10.1029/2023JF007119 <-- shared paper
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doi.org/10.5066/P9EUCGJQ <-- shared technical article
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sciencebase.gov/catalogMaps/ma <-- shared web mapping service
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#GIS #spatial #mapping #massmovement #landslide #engineeringgeology #remotesensing #sitespecific #LiDAR #iFSAR #paraglacial #kinematics #mapping #monitoring #spatialanalysis #spatiotemporal #fedscience #risk #hazard #glacier #retreat #climatechange #Alaska #BarryArm #fjord #hazardassessment #tsunami #wave #BarryGlacier #change #sensors #fieldwork #surveillance #melting #permafrost #Whittier #geophysics #geology #Alaska #geomorphometry #deglaciating
@USGS

Continued thread
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Nonilex

#Arctic #warming could pose a threat to America’s #security too: #Alaska may have new vulnerabilities to both #China & #Russia; changes in #ocean salinity & temp might interfere w/ #submarine detection systems; extremes of climate change, including #permafrost thaw in Russia, may drive #economic #instability, social #unrest, & territorial claims. [#Trump #Intelligence Agencies excluded #ClimateChange from the annual #ThreatAssessment report for the first time in decades — too *woke*]

#Greenland
Continued thread
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Sune Auken

@MartinStendel

Bio:

Climate scientist at #DMI.

Coordinator of PolarPortal (lots of up-to-date Arctic data) and ROPEWALK (huge Danish logbook digitization project together with @rigsarkivet).

#ClimateChange in the Arctic, in particular #Greenland and in Africa, in particular #Tanzania.

Modelling subsea #permafrost.

Conveying science to the public: #IKFF #IKlimaforskernesFodspor #BestilEnForsker

🇪🇺 with dual citizenship 🇩🇰 and 🇩🇪 and (occasionally) tooting in three languages.

Replied in thread
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HistoPol (#HP) 🏴 🇺🇸 🏴

Cc @rahmstorf

#ClimateCrisis:+2.7-3.1•C--Our children and grandchildren still alive in 2100 are so f*cked!

(1/2)

By #bneIntelliNews

"The disappearance of #SeaIce and the melting of the #permafrost in northeast #Russia will lead to unpredictable results. Global #weather patterns will be drastically altered, while 👉the melting of the permafrost will release gigatonnes of #CO₂ into the atmosphere almost overnight, that has been locked in the #ice...

fediscience.org/@rahmstorf/113

FediScience.orgProf. Stefan Rahmstorf (@rahmstorf@fediscience.org)What happens in the Arctic doesn't stay in the Arctic. It affects you. https://www.intellinews.com/arctic-set-to-undergo-irreversible-damage-as-hopes-of-hitting-the-1-5c-paris-target-fade-366175/
Public
O=C=O

Groundwater in the Arctic is delivering more carbon into the ocean than was previously known

A relatively small amount of #groundwater trickling through #Alaska's #tundra is releasing huge quantities of #carbon into the #ocean, where it can contribute to #ClimateChange, according to new research out of The University of Texas at Austin.
As the tundra continues to thaw and the flow of submarine groundwater ratchets up, Demir said that the outflow of carbon from shore to sea could effectively make ocean surface waters a carbon source to the #atmosphere. The #CO2 released via groundwater could also contribute to ocean #acidification.
"The #Arctic coast is changing in front of our eyes," said Bayani Cardenas, a co-author of this study and professor at the Jackson School's Department of Earth and Planetary Sciences. "As #permafrost thaws, it turns into coastal and submarine #aquifers. Even without this thawing, our studies are among the first to directly show the existence of such aquifers."

phys.org/news/2025-01-groundwa

#ClimateScience
#ClimateCrisis
#Cryosphere

Micaela Pedrazas (left) and Cansu Demir (right) install a piezometer along the beach of Kaktovik Lagoon. Credit: Bayani Cardenas / Jackson School of Geosciences
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💧🌏 Greg Cocks

Permafrost Thaw Threatens Up To 3 Million People In The Arctic
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phys.org/news/2025-01-permafro <-- shared technical article
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doi.org/10.1038/s43247-024-018 <-- 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

schematic - Composite overview synthesizing the risks from permafrost thaw identified across the four study areas
map - Map of the study areas and trends in the ground temperature over the period 2000–2019
photo - A drone picture shows private houses on a territory of former airfield, damaged by thermokarst processes in the village of Churapcha in the Republic of Sakha (Yakutia), Russia September 5, 2021
Permafrost risk analysis workflow diagram
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JuneSim63

"As temperatures get warmer, soils get warmer. In the permafrost, most of the soils have been entirely frozen throughout the full year. But now the temperatures are warmer, there’s more organic matter available for decomposition, and carbon gets released into the atmosphere. This is the permafrost-carbon feedback, which is the key driver here.”

#Arctic #Tundra #GlobalHeating #Carbon #Permafrost

theguardian.com/environment/20

The Guardian · A third of the Arctic’s vast carbon sink now a source of emissions, study revealsBy Patrick Greenfield
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Ed Wiebe

"The physical processes, hazards and societal consequences associated with permafrost thaw constitute risks that are perceived differently across the Arctic depending on the local context and place-dependent specificities. Understanding the complex nature of these risks is essential to support the resilience and adaptive capacity of Arctic communities."

phys.org/news/2025-01-permafro

Phys.org · Permafrost thaw threatens up to 3 million people in the ArcticBy Sara-Lena Brännström
#permafrost#ClimateChange
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Chris Merle

Melting #permafrost is bad, mmkay.

Iron and sulfite minerals are now leaching into once pristine arctic rivers, acidifying them. One the sulfur acidifies the water it begins to leach toxic compounds and elements into the rivers. It was more commonly seen in rivers where abandoned mines were nearby.

North America's Ongoing, Ignored Disaster

m.youtube.com/watch?v=Lxfpgqn6

m.youtube.com- YouTubeEnjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
#globalWarming#acidification#ClimateChange
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