Results 91 to 100 of about 1,205 (177)

Long‐Term Increases in Ca2+, Mg2+, and SO42− Concentrations in the Kolyma River (1980–2022) Due To Yedoma Degradation

Global Biogeochemical Cycles, Volume 40, Issue 2, February 2026.
Abstract Permafrost degradation under a warming climate has altered hydrological and biogeochemical processes across the Arctic. Although increasing fluxes of weathering‐derived ions (e.g., Ca2+, Mg2+, and SO42−) have been reported in Arctic rivers, the underlying mechanisms and hotspots within basins remain poorly understood due to limited analysis of
Y. Tashiro, T. Hiyama, H. Kanamori, L. Lebedeva, H. Park, O. Makarieva, P. Nikitina, S. R. Fassnacht, A. Zemlianskova, O. Zhunusova, K. Suzuki   +10 more
wiley   +1 more source

Cryolithology of the Sobo-Sise Yedoma cliff (eastern Lena Delta)

, 2020
The dataset compiles data from late Pleistocene Ice Complex permafrost and its Holocene cover exposed at a Yedoma cliff on the northern shore of Sobo-Sise Island (Sardakhskaya Channel, eastern Lena Delta, NE Siberia) including results of radiocarbon ...
Meyer, Hanno, Fritz, Michael, Opel, Thomas, Wetterich, Sebastian, Schirrmeister, Lutz   +4 more
core   +1 more source

Dissolved and Particulate Organic Carbon Characteristics in Summer and Winter Waters of the Lena Delta

Permafrost and Periglacial Processes, Volume 37, Issue 1, Page 154-166, January/March 2026.
ABSTRACT Rapid Arctic warming accelerates permafrost thaw, altering water flow and organic matter transport to aquatic ecosystems. To identify sources and seasonality of OC at the mouth of the Lena River, we measured summer and winter concentrations and C isotopes (∆14C and δ13C) of DOC and POC along a 140‐km transect of the Lena Delta.
O. Ogneva, G. Mollenhauer, T. Sanders, B. Juhls, J. Palmtag, M. Fuchs, J. Hammes, H. Grotheer, P. J. Mann, S. Opfergelt, J. Strauss   +10 more
wiley   +1 more source

Permafrost Deep Organic Matter: The IPA Yedoma Action Group [PDF]

, 2017
Die Action Group "The Yedoma Region: A Synthesis of Circum-Arctic Distribution and Thickness" der Internationalen Permafrost Assoziation (IPA) hat es zum Ziel die Verbreitung und Mächtigkeit von Yedoma Permafrost, einem spätpleitozänen sehr eisreichem ...
Kunitsky, Viktor V., Shmelev, Denis, Strauss, Jens, Laboor, Sebastian, Froese, Duane, Veremeeva, Alexandra, Grosse, Guido, Kanevskiy, Mikhail, Fortier, Daniel, Schirrmeister, Lutz   +9 more
core   +1 more source

Shallow carbon storage in ancient buried thermokarst in the South Kara Sea

Scientific Reports, 2018
Geophysical data from the South Kara Sea reveal U-shaped erosional structures buried beneath the 50–250 m deep seafloor of the continental shelf across an area of ~32 000 km2.
Alexey Portnov, Jürgen Mienert, Monica Winsborrow, Karin Andreassen, Sunil Vadakkepuliyambatta, Peter Semenov, Valery Gataullin   +6 more
doaj   +1 more source

Biodegradability of dissolved organic carbon in permafrost soils and aquatic systems: A meta-analysis [PDF]

, 2015
As Arctic regions warm and frozen soils thaw, the large organic carbon pool stored in permafrost becomes increasingly vulnerable to decomposition or transport.
Tank, Suzanne, Striegl, R.G., C. C. Treat, Tank, S.E., Wickland, K. P., K. P. Wickland, R. G. M. Spencer, Tank, Suzanne E., Spencer, Robert, Treat, Claire, Mann, P. J., Abbott, Benjamin, Treat, C. C., Vonk, J. E.; id_orcid, Spencer, R. G M, Striegl, Robert, Striegl, Robert G., Vonk, Jorien, Spencer, Robert G M, Mann, Paul, Treat, Claire C., S. E. Tank, R. G. Striegl, Wickland, K.P., Abbott, B.W., Tank, S. E., Organic geochemistry, Spencer, Robert G.M., Wickland, Kimberly, Abbott, B. W., Striegl, R. G., Wickland, Kimberly P., Vonk, Jorien E., B. W. Abbott, Abbott, Benjamin W., NWO-VENI: Ancient organic matter that matters: The fate of Siberian Yedoma deposits, J. E. Vonk, P. J. Mann, Mann, Paul J., Vonk, J. E.   +39 more
core   +4 more sources

Beringian flora and fauna from sedaDNA at Duvanny Yar, Sakha Republic, during marine isotope stages 2 and 3

Arctic, Antarctic, and Alpine Research
Beringia’s extensive late Quaternary deposits of yedoma silt provide rich floristic and faunal records. Sampling of frozen yedoma exposures typically uses multiple baydzherakhs (residual silt heaps developed as conical thermokarst mounds) that ...
Mary Edwards, Julian Murton, Min Huang, Alistair Monteath, Anatoly Lozhkin, Yulia Korzun, Yucheng Wang   +6 more
doaj   +1 more source

Geophysical and Geochemical Examination of Yedoma Permafrost at the CRREL Tunnel

The purpose of this research was to build towards the capability of mapping a greater extent of Yedoma permafrost. Through the use of Ground Penetrating Radar (GPR) and stable isotope analysis, specifically oxygen-18 and deuterium (18O and 2H), we lay ...
Greer, Presley Dale
core   +3 more sources

Yedoma: Late Pleistocene ice-rich syngenetic permafrost of Beringia [PDF]

Yedoma is a permafrost deposit widely distributed across the Arctic and found exclusively within the unglaciated regions in northern Siberia, Alaska, and the Yukon, which are the core regions of Beringia.
Strauss, Jens, Froese, Duane, Veremeeva, Aleksandra, Grosse, Guido, Schirrmeister, Lutz, Wetterich, Sebastian   +5 more
core   +1 more source

Stabilization of mineral-associated organic carbon in Pleistocene permafrost. [PDF]

Nat Commun, 2023
Martens J, Mueller CW, Joshi P, Rosinger C, Maisch M, Kappler A, Bonkowski M, Schwamborn G, Schirrmeister L, Rethemeyer J.   +9 more
europepmc   +1 more source