Results 1 to 10 of about 499 (118)

Onshore Thermokarst Primes Subsea Permafrost Degradation [PDF]

Geophysical Research Letters, 2021
AbstractThe response of permafrost to marine submergence can vary between ice‐rich late Pleistocene deposits and the thermokarst basins that thawed out during the Holocene. We hypothesize that inundated Alases offshore thaw faster than submerged Yedoma.
Angelopoulos, Michael, Overduin, Pier P., Jenrich, Maren, Nitze, Ingmar, Günther, Frank, Strauss, Jens, Westermann, Sebastian, Schirrmeister, Lutz, Kholodov, Alexander, Krautblatter, Michael, Grigoriev, Mikhail N., Grosse, Guido   +11 more
openaire   +4 more sources

Roles of Thermokarst Lakes in a Warming World [PDF]

Trends in Microbiology, 2020
Permafrost covers a quarter of the northern hemisphere land surface and contains twice the amount of carbon that is currently present in the atmosphere. Future climate change is expected to reduce its near-surface cover by over 90% by the end of the 21st century, leading to thermokarst lake formation.
Michiel H. in 't Zandt, Susanne Liebner, Cornelia U. Welte   +2 more
openaire   +5 more sources

Simulating thermokarst lakes [PDF]

Eos, Transactions American Geophysical Union, 2012
Thermokarst lakes, which form from thawing permafrost, alter landscapes and hydrology and can release significant amounts of methane to the atmosphere. To learn more about the dynamics of thermokarst lakes, Kessler et al. created a three‐dimensional numerical model of these lakes that includes the surrounding topography.
openaire   +2 more sources

Circumpolar distribution and carbon storage of thermokarst landscapes [PDF]

Nature Communications, 2016
AbstractThermokarst is the process whereby the thawing of ice-rich permafrost ground causes land subsidence, resulting in development of distinctive landforms. Accelerated thermokarst due to climate change will damage infrastructure, but also impact hydrology, ecology and biogeochemistry. Here, we present a circumpolar assessment of the distribution of
D. Olefeldt, S. Goswami, G. Grosse, D. Hayes, G. Hugelius, P. Kuhry, A. D. McGuire, V. E. Romanovsky, A.B.K. Sannel, E.A.G. Schuur, M. R. Turetsky   +10 more
openaire   +4 more sources

Thermokarst-lake methanogenesis along a complete talik profile [PDF]

Biogeosciences, 2015
Abstract. Thermokarst (thaw) lakes emit methane (CH4) to the atmosphere formed from thawed permafrost organic matter (OM), but the relative magnitude of CH4 production in surface lake sediments vs. deeper thawed permafrost horizons is not well understood.
J. K. Heslop, K. M. Walter Anthony, A. Sepulveda-Jauregui, K. Martinez-Cruz, A. Bondurant, G. Grosse, M. C. Jones   +6 more
openaire   +4 more sources

Recent Arctic tundra fire initiates widespread thermokarst development [PDF]

Scientific Reports, 2015
AbstractFire-induced permafrost degradation is well documented in boreal forests, but the role of fires in initiating thermokarst development in Arctic tundra is less well understood. Here we show that Arctic tundra fires may induce widespread thaw subsidence of permafrost terrain in the first seven years following the disturbance.
Benjamin M. Jones, Guido Grosse, Christopher D. Arp, Eric Miller, Lin Liu, Daniel J. Hayes, Christopher F. Larsen   +6 more
openaire   +3 more sources

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

Effects of Hillslope Thermokarst in Northern Alaska [PDF]

Eos, Transactions American Geophysical Union, 2009
Permafrost thawing is increasing in the Arctic and sub‐Arctic [Osterkamp and Romanovsky, 1996; Osterkamp, 2007] in response to climate warming [Hassol, 2004]. One consequence of thawing permafrost is the development of thermokarst (physical depression of ground surface) because of reduced support of overlying soil [Jorgenson et al., 2006].
Michael N. Gooseff, Andrew Balser, William B. Bowden, Jeremy B. Jones   +3 more
openaire   +1 more source

Thermokarst ponding, North Slave region, Northwest Territories

, 2017
This open file provides an inventory of thermokarst pond development between 1945 and 2005 in a study area that is representative of the southern North Slave region between Behchoko and Yellowknife, Northwest Territories. The primary purpose of this inventory is to approximate the location and size of thermokarst ponds in a study area representative of
P D Morse, T L McWade, S A Wolfe
openaire   +1 more source

Chemoautotrophic carbon fixation in thermokarst lakes on the Tibetan Plateau. [PDF]

Nat Commun
Liu F, Kang L, Li Z, Peñuelas J, Abbott BW, Xu W, Zhou W, Liu X, Chen L, Qin S, Zhang D, Peng Y, Yang Y.   +12 more
europepmc   +1 more source