Results 71 to 80 of about 4,444 (222)

Permafrost Terrain Disturbance Susceptibility in the Nacho Nyäk Tagé (Stewart River) Watershed, Yukon, Canada

Permafrost and Periglacial Processes, Volume 37, Issue 2, Page 203-226, April/June 2026.
ABSTRACT The Nacho Nyäk Tagé (Stewart River) watershed in central Yukon (Canada) is characterized by discontinuous permafrost that is locally highly sensitive to thaw. This study aims to map the spatial distribution of permafrost terrain disturbances (PTDs) in the watershed and model thaw susceptibility to support community‐led land‐use planning by the
Frederic Brieger, Murray Richardson, Shawn Kenny   +2 more
wiley   +1 more source

Warming-induced destabilization of peat plateau/thermokarst lake complexes [PDF]

Journal of Geophysical Research, 2011
Peat plateaus are widespread at high northern latitudes and are important soil organic carbon reservoirs.
A. B. K. Sannel, P. Kuhry
openaire   +1 more source

Holocene thermokarst and pingo development in the Kolyma Lowland (NE Siberia) [PDF]

, 2018
Ground ice and sedimentary records of a pingo exposure reveal insights into Holocene permafrost, landscape and climate dynamics. Early to mid‐Holocene thermokarst lake deposits contain rich floral and faunal paleoassemblages, which indicate lake ...
Bobrov, Anatoly, Fritz, Michael, Günther, Frank, Matthes, Heidrun, Meyer, Hanno, Nazarova, Larisa, Opel, Thomas, Palagushkina, Olga, Pogosyan, Lilit, Savelieva, Larisa, Schirrmeister, Lutz, Syrykh, Liudmila, Wetterich, Sebastian   +12 more
core   +2 more sources

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

High methane emissions from thermokarst lakes in subarctic peatlands [PDF]

Limnology and Oceanography, 2016
AbstractThe thawing and subsidence of frozen peat mounds (palsas) in permafrost landscapes results in the formation of organic‐rich thermokarst lakes. We examined the effects of palsa degradation on CH4 and CO2 emissions by comparing thermokarst lakes at two peatland locations in subarctic Québec, Canada: in the northern discontinuous permafrost region,
Matveev, Alex, Laurion, Isabelle, Deshpande, Bethany N., Bhiry, Najat, Vincent, Warwick   +4 more
openaire   +2 more sources

Investigation of thermal regimes of lakes used for water supply and examination of drinking water system in Kotzebue, Alaska [PDF]

, 2012
Thesis (M.S.) University of Alaska Fairbanks, 2012Many villages in Arctic Alaska rely on lakes for water supply, such as the Alaskan City of Kotzebue, and these lakes may be sensitive to climate variability and change, particularly thermal regimes and ...
Bendlova, Tereza
core  

Regional environmental change versus local signal preservation in Holocene thermokarst lake sediments: A case study from Herschel Island, Yukon (Canada) [PDF]

, 2018
Thermokarst lakes cover nearly one fourth of ice-rich permafrost lowlands in the Arctic. Sediments from an athalassic subsaline thermokarst lake on Herschel Island (69°36′N; 139°04′W, Canadian Arctic) were used to understand regional changes in climate ...
Frenzel, Peter, Fritz, Michael, Gajewski, Konrad, Körte, Lisa, Lantuit, Hugues, Lenz, Josefine, Paquette, Nathalie, Unkel, Ingmar, Wetterich, Sebastian   +8 more
core   +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

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

Multiyear measurements of ebullitive methane flux from three subarctic lakes [PDF]

, 2013
Ebullition (bubbling) from small lakes and ponds at high latitudes is an important yet unconstrained source of atmospheric methane (CH4). Small water bodies are most abundant in permanently frozen peatlands, and it is speculated that their emissions will
Bastviken, David, Varner, Ruth K., Wik, Martin   +2 more
core   +1 more source