Results 71 to 80 of about 7,581 (228)

Sediment characteristics of a thermokarst lagoon in the northeastern Siberian Arctic (Ivashkina Lagoon, Bykovsky Peninsula) [PDF]

, 2018
Lagoon development in ice-rich permafrost environments such as the Alaskan Beaufort Sea coastline and the Yedoma coastlines of northern Siberia represents a key mechanism of marine inundation of permafrost along the Arctic coastal plains.
Grigoriev, Mikhail N., Grosse, Guido, Guenther, Frank, Hubberten, Hans-Wolfgang, Kholodov, Aleksander L., Overduin, Paul, Schirrmeister, Lutz, Strauss, Jens   +7 more
core   +1 more source

Drivers of Dissolved Organic Matter Quality and Concentration in a Mountainous Subarctic Watershed, Yukon, Canada

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 4, April 2026.
Abstract Northern permafrost regions contain vast frozen stores of organic carbon that are vulnerable to thaw and mobilization. While considerable attention has been paid to carbon export from large Arctic rivers, gaps remain in characterizing dissolved organic matter (DOM) quality and export in permafrost influenced catchments that contain a mosaic of
Aliana C. Fristensky, Sean K. Carey
wiley   +1 more source

Changes in the Distribution of Thermokarst Lakes on the Qinghai-Tibet Plateau from 2015 to 2020

Remote Sensing
Thermokarst lakes are widely distributed on the Qinghai-Tibet Plateau (QTP). However, owing to the lack of high-precision remote sensing imagery and the difficulty of in situ monitoring of permafrost regions, quantifying the changes in the distribution ...
Rongrong Wei, Xia Hu, Shaojie Zhao
doaj   +1 more source

Numerical modeling of two-dimensional temperature dynamics across ice-wedge polygons [PDF]

, 2017
Thesis (M.S.) University of Alaska Fairbanks, 2017The ice wedges on the North Slope of Alaska have been forming for many millennia, when the ground cracked and the cracks were filled with snowmelt water.
Garayshin, Viacheslav Valer'evich, Гарайшин, Вячеслав Валерьевич   +1 more
core  

Organic carbon characteristics in yedoma and thermokarst deposits on Baldwin Peninsula, West-Alaska [PDF]

, 2018
As Arctic warming continues and permafrost thaws, more soil and sedimentary organic carbon (OC) will be decomposed in northern high latitudes. Still, uncertainties remain in the quantity and quality of OC stored in different deposit types of permafrost ...
Fuchs, Matthias, Grosse, Guido, Jongejans, Loeka L., Lenz, Josefine, Mangelsdorf, Kai, Peterse, Francien, Strauss, Jens   +6 more
core   +1 more source

Thermokarst lakes increased atmospheric methane levels [PDF]

Eos, Transactions American Geophysical Union, 2012
Ice cores taken from Greenland indicate that during the last deglaciation, approximately 10,000 years ago, increases in temperature occurred at the same times as increases in atmospheric methane, a potent greenhouse gas. The source of the increase in atmospheric methane is still debated, but it has been suggested that thermokarst lakes, which form from
openaire   +1 more source

Bridging the Gap From Peat to Ponds: Terrestrial and Aquatic Greenhouse Gas Emissions in an Evolving Permafrost‐Associated Subarctic Peatland

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 4, April 2026.
Abstract Rapid permafrost thaw in peatlands transforms the subarctic landscape into a mosaic of ponds and peat soil, varying in moisture, carbon and nutrients, and time since thaw. As subarctic permafrost degrades, ponds emerge and mature and can gradually infill with Sphagnum peat.
Melanie S. Burnett, Cynthia M. Kallenbach, Isabelle Laurion, Jérôme Comte, Roxane Maranger, Martial Leroy, Peter M. J. Douglas   +6 more
wiley   +1 more source

Simulation and Prediction of Thermokarst Lake Surface Temperature Changes on the Qinghai–Tibet Plateau

Remote Sensing
Thermokarst lakes are shallow bodies of freshwater that develop in permafrost regions, and they are an essential focus of international permafrost research.
Chengming Zhang, Zeyong Gao, Jing Luo, Wenyan Liu, Mengjia Chen, Fujun Niu, Yibo Wang, Yunhu Shang   +7 more
doaj   +1 more source

Ecological training set of freshwater ostracods in Canadian and Siberian periglacial regions [PDF]

, 2008
Quantified palaeoenvironmental reconstructions are essential to estimate the impact of future climate changes on ecosystems. Based on faunistic data from regional multireference sites and limnological surveys, ecological training sets can be used to ...
Pienitz, R., Schirrmeister, Lutz, Viehberg, F. A., Wetterich, Sebastian   +3 more
core  

Peatlands Have the Potential to Emerge as Significant Contributors to Future Climate Warming

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 4, April 2026.
Abstract Peatlands store a substantial amount of carbon in the terrestrial ecosystem. They are both long‐term sinks of organic carbon and a major natural source of atmospheric methane. The accumulation of carbon is a result of net primary production surpassing decomposition rates over millennia, whereas methane production is intricately linked to the ...
Nitin Chaudhary, Juha‐Pekka Tuovinen, Dan Kou, Pramit Kumar Deb Burman, Abhishek Lodh, Shubhangi Lamba, Narasinha Shurpali, Guy Schurgers, Susan E. Page, Sebastian Westermann, Wenxin Zhang   +10 more
wiley   +1 more source