Results 51 to 60 of about 1,205 (177)
Onshore Thermokarst Primes Subsea Permafrost Degradation
The 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.
Michael Angelopoulos +11 more
doaj +1 more source
Yedoma Permafrost Genesis: More than 150 Years of Mystery and Controversy [PDF]
Since the discovery of frozen megafauna carcasses in Northern Siberia and Alaska in the early 1800s, the Yedoma phenomenon has attracted many Arctic explorers and scientists.
Strauss, Jens +7 more
core +1 more source
On the basis of about 430 analyses, the 18O and D compositions (%o) of atmospheric precipitation, ground ice, surface and inter-permafrost underground waters of cryogenic-aeolian landscapes of Central Yakutia (Eastern Siberia) are discussed ...
A. A. Galanin +4 more
doaj +1 more source
The cryostratigraphy of the Yedoma cliff of Sobo-Sise Island (Lena delta) reveals permafrost dynamics in the central Laptev Sea coastal region during the last 52 kyr [PDF]
The present study examines the formation history and cryolithological properties of the late-Pleistocene Yedoma Ice Complex (IC) and its Holocene cover in the eastern Lena delta on Sobo-Sise Island.
S. Wetterich +11 more
doaj +1 more source
Diminished Radiative Cooling With Northward Wildfire Advance in the East Siberian Boreal Region
Abstract Intensification of the Siberian wildfire regime is characterized by large increases in burned area above the Arctic Circle. Wildfire in boreal forests typically reduces albedo in the decades following fire, resulting in a net cooling effect. Here we quantified changes in albedo and the accompanying radiative forcing associated with a northward
Michael M. Loranty +3 more
wiley +1 more source
ABSTRACT Subfossil insect communities from the Quartz Creek site provide a detailed record of both Late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada. Fifteen Pleistocene assemblages (marine isotope stages [MIS] 4 to 2) are dominated by steppe–tundra and dry‐tundra taxa, particularly the weevils ...
Scott L. Cocker +4 more
wiley +1 more source
Database of Ice-Rich Yedoma Permafrost (IRYP)
Vast portions of Arctic and sub-Arctic Siberia, Alaska and the Yukon Territory are covered by ice-rich silty to sandy deposits that are containing large ice wedges, resulting from syngenetic sedimentation and freezing.
Siegert, Christine +55 more
core +1 more source
Rapid Increase in Geogenic CO2 Emissions from Antarctic Permafrost
Abstract Thawing permafrost can amplify climate change by releasing previously stored carbon, but observations of this feedback come mainly from the Arctic. Ice‐free Antarctic terrains are generally regarded as minor CO2 sources, although sub‐permafrost brines and deep carbon reservoirs may support localized geogenic degassing.
L. Ruggiero +6 more
wiley +1 more source
Role of methanotrophy in a high‐methane emitting thermokarst lake
Abstract Thermokarst (thaw) lakes are projected to be an increasing source of atmospheric methane (CH4), a potent greenhouse gas, as climate warms and permafrost thaws. However, the magnitude of CH4 cycling, particularly the role of aerobic CH4 oxidation (methanotrophy), among thermokarst lakes, is not well constrained.
Teresa Aguirrezabala‐Cámpano +4 more
wiley +1 more source
This dataset merges data from the yedoma domain in Northern Siberia (RU) and Alaska (US). It includes numerous fieldwork campaigns, which take place since 1998 .
Strauss, Jens +13 more
core +1 more source

