Zobrazeno 1 - 10
of 1 107
pro vyhledávání: '"G. Grosse"'
Autor:
N. Nesterova, M. Leibman, A. Kizyakov, H. Lantuit, I. Tarasevich, I. Nitze, A. Veremeeva, G. Grosse
Publikováno v:
The Cryosphere, Vol 18, Pp 4787-4810 (2024)
Retrogressive thaw slumps (RTSs) are spectacular landforms that occur due to the thawing of ice-rich permafrost or melting of massive ground ice, often in hillslope terrain. RTSs occur in the Arctic, the subarctic, and high mountain (Qinghai–Tibet
Externí odkaz:
https://doaj.org/article/accf0628d4324638a765159796399dda
Publikováno v:
Earth System Science Data, Vol 16, Pp 3719-3753 (2024)
The Arctic region has undergone warming at a rate more than 3 times higher than the global average. This warming has led to the degradation of near-surface permafrost, resulting in decreased ground stability. This instability not only poses a primary
Externí odkaz:
https://doaj.org/article/5b9ae2f3f10646ee88a35a4fdc5773fb
Autor:
K. M. Walter Anthony, P. Anthony, N. Hasson, C. Edgar, O. Sivan, E. Eliani-Russak, O. Bergman, B. J. Minsley, S. R. James, N. J. Pastick, A. Kholodov, S. Zimov, E. Euskirchen, M. S. Bret-Harte, G. Grosse, M. Langer, J. Nitzbon
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-17 (2024)
Abstract Landscape drying associated with permafrost thaw is expected to enhance microbial methane oxidation in arctic soils. Here we show that ice-rich, Yedoma permafrost deposits, comprising a disproportionately large fraction of pan-arctic soil ca
Externí odkaz:
https://doaj.org/article/f501b4f1d2a14e6f874eaf0f9be810cb
Publikováno v:
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-11 (2023)
Abstract Climate-driven permafrost thaw can release ancient carbon to the atmosphere, begetting further warming in a positive feedback loop. Polar ice core data and young radiocarbon ages of dissolved methane in thermokarst lakes have challenged the
Externí odkaz:
https://doaj.org/article/6f8853a733724e8e899209befeb4561f
Autor:
F. Miesner, P. P. Overduin, G. Grosse, J. Strauss, M. Langer, S. Westermann, T. Schneider von Deimling, V. Brovkin, S. Arndt
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract Subsea permafrost carbon pools below the Arctic shelf seas are a major unknown in the global carbon cycle. We combine a numerical model of sedimentation and permafrost evolution with simplified carbon turnover to estimate accumulation and mi
Externí odkaz:
https://doaj.org/article/14d60b9de37149208d3fc423a3e28398
Publikováno v:
The Cryosphere, Vol 16, Pp 4423-4445 (2022)
Sea level rise and coastal erosion have inundated large areas of Arctic permafrost. Submergence by warm and saline waters increases the rate of inundated permafrost thaw compared to sub-aerial thawing on land. Studying the contact between the unfroze
Externí odkaz:
https://doaj.org/article/6416180a7ade404a8dde4136e7ebb6ea
Publikováno v:
The Cryosphere, Vol 16, Pp 3507-3515 (2022)
The microstructure of permafrost ground contains clues to its formation and hence its preconditioning to future change. We applied X-ray computed microtomography (CT) to obtain high-resolution data (Δx=50 µm) of the composition of a 164 cm long per
Externí odkaz:
https://doaj.org/article/061d0b19775d45bcb3eac342eb55f090
Autor:
L. L. Jongejans, K. Mangelsdorf, C. Karger, T. Opel, S. Wetterich, J. Courtin, H. Meyer, A. I. Kizyakov, G. Grosse, A. G. Shepelev, I. I. Syromyatnikov, A. N. Fedorov, J. Strauss
Publikováno v:
The Cryosphere, Vol 16, Pp 3601-3617 (2022)
The Batagay megaslump, a permafrost thaw feature in north-eastern Siberia, provides access to ancient permafrost up to ∼650 kyr old. We aimed to assess the permafrost-locked organic matter (OM) quality and to deduce palaeo-environmental information
Externí odkaz:
https://doaj.org/article/0cada02e77a24c26875e645ea6695546
Autor:
M. Fuchs, J. Palmtag, B. Juhls, P. P. Overduin, G. Grosse, A. Abdelwahab, M. Bedington, T. Sanders, O. Ogneva, I. V. Fedorova, N. S. Zimov, P. J. Mann, J. Strauss
Publikováno v:
Earth System Science Data, Vol 14, Pp 2279-2301 (2022)
Arctic river deltas and deltaic near-shore zones represent important land–ocean transition zones influencing sediment dynamics and nutrient fluxes from permafrost-affected terrestrial ecosystems into the coastal Arctic Ocean. To accurately model fl
Externí odkaz:
https://doaj.org/article/98443cfdf4ba4d55acf946ea4ff6e9d8
Autor:
C. Haugk, L. L. Jongejans, K. Mangelsdorf, M. Fuchs, O. Ogneva, J. Palmtag, G. Mollenhauer, P. J. Mann, P. P. Overduin, G. Grosse, T. Sanders, R. E. Tuerena, L. Schirrmeister, S. Wetterich, A. Kizyakov, C. Karger, J. Strauss
Publikováno v:
Biogeosciences, Vol 19, Pp 2079-2094 (2022)
Organic carbon (OC) stored in Arctic permafrost represents one of Earth's largest and most vulnerable terrestrial carbon pools. Amplified climate warming across the Arctic results in widespread permafrost thaw. Permafrost deposits exposed at river cl
Externí odkaz:
https://doaj.org/article/574a2a4eb5dd46c5b4036b653fae373e