Results 21 to 30 of about 1,205 (177)

Potential nitrogen mobilisation from the Yedoma permafrost domain

Environmental Research Letters
Permafrost regions, characterised by extensive belowground excess ice, are highly vulnerable to rapid thaw, particularly in areas such as the Yedoma domain. This region is known to freeze-lock a globally significant stock of soil nitrogen (N).
Jens Strauss, Maija E Marushchak, Lona van Delden, Tina Sanders, Christina Biasi, Carolina Voigt, Loeka L Jongejans, Claire Treat   +7 more
doaj   +5 more sources

Origin and Pathways of Dissolved Organic Carbon in a Small Catchment in the Lena River Delta

Frontiers in Earth Science, 2022
The Arctic is rich in aquatic systems and experiences rapid warming due to climate change. The accelerated warming causes permafrost thaw and the mobilization of organic carbon.
Lydia Stolpmann, Lydia Stolpmann, Gesine Mollenhauer, Anne Morgenstern, Jens S. Hammes, Julia Boike, Julia Boike, Pier Paul Overduin, Guido Grosse, Guido Grosse   +9 more
doaj   +1 more source

Organic carbon characteristics in ice-rich permafrost in alas and Yedoma deposits, central Yakutia, Siberia [PDF]

Biogeosciences, 2020
Permafrost ground is one of the largest repositories of terrestrial organic carbon and might become or already is a carbon source in response to ongoing global warming.
T. Windirsch, T. Windirsch, G. Grosse, G. Grosse, M. Ulrich, L. Schirrmeister, A. N. Fedorov, A. N. Fedorov, P. Y. Konstantinov, M. Fuchs, L. L. Jongejans, L. L. Jongejans, J. Wolter, T. Opel, J. Strauss   +14 more
doaj   +1 more source

Periglacial Lake Origin Influences the Likelihood of Lake Drainage in Northern Alaska

Remote Sensing, 2021
Nearly 25% of all lakes on earth are located at high latitudes. These lakes are formed by a combination of thermokarst, glacial, and geological processes.
Mark Jason Lara, Melissa Lynn Chipman
doaj   +1 more source

n-Alkane Characteristics of Thawed Permafrost Deposits Below a Thermokarst Lake on Bykovsky Peninsula, Northeastern Siberia

Frontiers in Environmental Science, 2020
Rapid permafrost thaw by thermokarst mobilizes previously frozen organic matter (OM) down to tens of meters deep within decades to centuries, leading to microbial degradation and greenhouse gas release. Late Pleistocene ice-rich Yedoma deposits that thaw
Loeka L. Jongejans, Loeka L. Jongejans, Kai Mangelsdorf, Lutz Schirrmeister, Mikhail N. Grigoriev, Georgii M. Maksimov, Boris K. Biskaborn, Guido Grosse, Guido Grosse, Jens Strauss   +9 more
doaj   +1 more source

Geochemistry and Weathering Indices of Yedoma and Alas Deposits beneath Thermokarst Lakes in Central Yakutia

Frontiers in Earth Science, 2021
Ice- and organic-rich deposits of late Pleistocene age, known as Yedoma Ice Complex (IC), are widespread across large permafrost regions in Northeast Siberia.
Mathias Ulrich, Loeka L. Jongejans, Loeka L. Jongejans, Guido Grosse, Guido Grosse, Birgit Schneider, Thomas Opel, Sebastian Wetterich, Alexander N. Fedorov, Alexander N. Fedorov, Lutz Schirrmeister, Torben Windirsch, Torben Windirsch, Julia Wiedmann, Jens Strauss   +14 more
doaj   +1 more source

Yedoma Cryostratigraphy of Recently Excavated Sections of the CRREL Permafrost Tunnel Near Fairbanks, Alaska

Frontiers in Earth Science, 2022
Recent excavation in the new CRREL Permafrost Tunnel in Fox, Alaska provides a unique opportunity to study properties of Yedoma — late Pleistocene ice- and organic-rich syngenetic permafrost.
Mikhail Kanevskiy, Yuri Shur, Nancy H. Bigelow, Kevin L. Bjella, Thomas A. Douglas, Daniel Fortier, Benjamin M. Jones, M. Torre Jorgenson   +7 more
doaj   +1 more source

Spatial analyses of thermokarst lakes and basins in Yedoma landscapes of the Lena Delta [PDF]

The Cryosphere, 2011
Distinctive periglacial landscapes have formed in late-Pleistocene ice-rich permafrost deposits (Ice Complex) of northern Yakutia, Siberia. Thermokarst lakes and thermokarst basins alternate with ice-rich Yedoma uplands.
A. Morgenstern, G. Grosse, F. Günther, I. Fedorova, L. Schirrmeister   +4 more
doaj   +1 more source

Sources of CO2 Produced in Freshly Thawed Pleistocene-Age Yedoma Permafrost

Frontiers in Earth Science, 2022
The release of greenhouse gases from the large organic carbon stock in permafrost deposits in the circumarctic regions may accelerate global warming upon thaw.
Jan Olaf Melchert, Philipp Wischhöfer, Christian Knoblauch, Christian Knoblauch, Tim Eckhardt, Tim Eckhardt, Susanne Liebner, Susanne Liebner, Janet Rethemeyer   +8 more
doaj   +1 more source

Geochemical composition of ice wedges in the Batagay yedoma

Арктика и Антарктика, 2021
The subject of this research is the syngenetic ice wedges stripped in the Batagaika crater (67°34 '49" N, 134°46 ' 19 " E), located 10 km southeast of the Batagay settlement. The assessment of macroelement composition of ice was conducted using “Stayer” ion chromatograph (Russia), the chloride ion ...
Yurij Kirillovich Vasil'chuk, Jessica Yur'evna Vasil'chuk, Nadine Arkad'evna Budantseva, Alla Constantinovna Vasil'chuk, Alexander Pavlovich Ginzburg   +4 more
openaire   +2 more sources