Zobrazeno 1 - 10
of 1 108
pro vyhledávání: '"G Grosse"'
Publikováno v:
Environmental Research Letters, Vol 18, Iss 10, p 104053 (2023)
Thawing of ice-rich permafrost soils in sloped terrain can lead to activation of retrogressive thaw slumps (RTSs) which make organic matter available for decomposition that has been frozen for centuries to millennia. Recent studies show that the area
Externí odkaz:
https://doaj.org/article/988f9ab4fff14543b4f2d4b98fceec41
Autor:
K M Walter Anthony, P Lindgren, P Hanke, M Engram, P Anthony, R P Daanen, A Bondurant, A K Liljedahl, J Lenz, G Grosse, B M Jones, L Brosius, S R James, B J Minsley, N J Pastick, J Munk, J P Chanton, C E Miller, F J Meyer
Publikováno v:
Environmental Research Letters, Vol 16, Iss 3, p 035010 (2021)
Thermokarst lakes accelerate deep permafrost thaw and the mobilization of previously frozen soil organic carbon. This leads to microbial decomposition and large releases of carbon dioxide (CO _2 ) and methane (CH _4 ) that enhance climate warming. Ho
Externí odkaz:
https://doaj.org/article/a5f744c85ac8478b9d77f06769b66536
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:
Environmental Research Letters, Vol 8, Iss 3, p 035016 (2013)
Climate-induced changes to permafrost are altering high latitude landscapes in ways that could increase the vulnerability of the vast soil carbon pools of the region. Permafrost thaw is temporally dynamic and spatially heterogeneous because, in addit
Externí odkaz:
https://doaj.org/article/9d92ecb833ef4684a03f54f2184291a2
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:
M. E. Marushchak, J. Kerttula, K. Diáková, A. Faguet, J. Gil, G. Grosse, C. Knoblauch, N. Lashchinskiy, P. J. Martikainen, A. Morgenstern, M. Nykamb, J. G. Ronkainen, H. M. P. Siljanen, L. van Delden, C. Voigt, N. Zimov, S. Zimov, C. Biasi
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
During permafrost thaw, nitrogen can be released as the greenhouse gas nitrous oxide, but the magnitude of this flux is unknown. Nitrous oxide emissions from ice-rich permafrost deposits are reported here, showing that emissions increase after thawin
Externí odkaz:
https://doaj.org/article/9bceb0dfd27b45168841ef197e499519