Results 131 to 140 of about 1,094,470 (270)

Evolutions of Non‐oxygenated Compounds in Sunlit Subarctic Thermokarst Pond Surface Waters

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 18, 28 September 2026.
Abstract With global climate change, ground subsidence caused by permafrost thawing leads to the formation of thermokarst ponds, where organics from eroding permafrost accumulate in part as dissolved organic matter (DOM). Surface waters were collected from two subarctic thermokarst ponds with distinct characteristics: one palsa‐affected pond, which is ...
Tao Wang, Runbo Wang, Jianmin Chen, Florent Domine, Liwu Zhang, Christian George   +5 more
wiley   +1 more source

Fluvial Morphology in Different Permafrost Environments—A Review

Quaternary
This review presents a synthesis of the interaction between the hydro-morphological processes on interfluves and channels within fluvial catchments in permafrost regions.
Jef Vandenberghe
doaj   +1 more source

Potential remobilization of belowground permafrost carbon under future global warming

, 2010
Research on permafrost carbon has dramatically increased in the past few years. A new estimate of 1672 Pg C of belowground organic carbon in the northern circumpolar permafrost region more than doubles the previous value and highlights the potential role
E. A. G. Schuur, Tarnocai, C, P. Kuhry, Kuhry, P, Dorrepaal, Ellen,, Kuhry, P.,, E. Dorrepaal, Hugelius, G, Schuur, E. A. G., Schuur, EAG, C. Tarnocai, G. Hugelius, Dorrepaal, E., Hugelius, G.,, Tarnocai, C.   +14 more
core   +1 more source

Emergent Regimes of River Meandering and Permafrost Extent in Arctic Floodplains

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Permafrost in Arctic floodplains impacts carbon stores, ecosystems, and infrastructure, yet the processes controlling its distribution remain poorly constrained. Here we present a numerical model for the coupled evolution of river meandering and floodplain permafrost that captures the competition between bank erosion and permafrost growth.
Michael P. Lamb, Emily C. Geyman, Madison M. Douglas, Ajay B. Limaye   +3 more
wiley   +1 more source

First Empirical Assessment of Ice Content From a Himalayan Rock Glacier

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Climate warming and degradation of glaciers and permafrost in High Mountain Asia is threatening the sustainability of the region's natural “water towers” and allied ecosystems and infrastructure. Approximately 25,000 Himalayan rock glaciers exist and, being more resilient to climatic change than glaciers, they represent important freshwater ...
Matthew W. Peacey, Stephan Harrison, Tristram D. L. Irvine‐Fynn, Yan Hu, Karen Anderson, Ruolin Leng, Zhangyu Sun, Lin Liu   +7 more
wiley   +1 more source

Permafrost Degradation Drives Shifts in Chemostasis and Stream Geochemistry in the McMurdo Dry Valleys, Antarctica

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract In the McMurdo Dry Valleys, Antarctica's largest ice‐free area, the stream channels consist of rock and sediment that are underlain by permafrost. Substantial permafrost degradation and channel erosion occurred in January 2012 on the west branch of Crescent Stream, while the east branch remained unaffected.
Anna Wright, Michael Gooseff, Kathleen Welch, Melisa Diaz   +3 more
wiley   +1 more source

Sedimentology and geochemistry of the recent sediments of the river system on Hurd Peninsula, Livingston Island, Antarctica

The Depositional Record, Volume 12, Issue 4, September 2026.
This study investigates the sedimentology and geochemistry of recent sediments from ephemeral river systems on Hurd Peninsula, Livingston Island, Antarctica. These systems are important for understanding sedimentary and geochemical processes in unique polar environments.
Yakup Çelik, Merve Özyurt, Raif Kandemir   +2 more
wiley   +1 more source

North American Circum-Arctic Permafrost Degradation Observation Using Sentinel-1 InSAR Data

Remote Sensing
In the context of global warming, the accelerated degradation of circum-Arctic permafrost is releasing a significant amount of carbon. InSAR can indirectly reflect the degradation of permafrost by monitoring its deformation.
Shaoyang Guan, Chao Wang, Yixian Tang, Lichuan Zou, Peichen Yu, Tianyang Li, Hong Zhang   +6 more
doaj   +1 more source

Soil and permafrost distribution, soil characterisation and soil vulnerability to human foot trampling, Wright Valley, Antarctica [PDF]

, 2012
Soils and shallow permafrost in Wright Valley, Antarctica were mapped at a scale of 1:50 000 to depict their spatial distribution, and sampled to determine the main drivers for the soil classification.
McLeod, Malcolm
core  

Between Mosses and Microbes: Stable Isotopes (15N/14N, 13C/12C) Clarify the Trophic Niches of Oribatid Mites on a High‐Arctic Permafrost Archipelago (Svalbard, Norway)

Ecology and Evolution, Volume 16, Issue 9, September 2026.
Using stable isotopes (15N, 13C) we identified four trophic groups of oribatid mites (phytophagous, secondary decomposers, predators/scavengers and lichen feeders) on Svalbard; primary decomposers were missing, pointing to low litter quality. Most oribatid mite taxa were boreal/tundra habitat specialists with strong sclerotization which likely improves
Mark Maraun, Rasmus Clausen Kaiser, Stephen J. Coulson, Xue Pan, Stefan Scheu, Anna Seniczak   +5 more
wiley   +1 more source