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. To test this hypothesis, we estimated depths to the to...
Published in: | Geophysical Research Letters |
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Online Access: | http://hdl.handle.net/10852/92623 http://urn.nb.no/URN:NBN:no-95222 https://doi.org/10.1029/2021GL093881 |
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ftoslouniv:oai:www.duo.uio.no:10852/92623 2023-05-15T15:04:06+02:00 Onshore Thermokarst Primes Subsea Permafrost Degradation Angelopoulos, Michael Overduin, Pier Paul Jenrich, Maren Nitze, Ingmar Günther, Frank Strauss, Jens Westermann, Sebastian Schirrmeister, Lutz Kholodov, Alexander Krautblatter, Michael Grigoriev, Mikhail N. Grosse, Guido 2022-02-06T14:15:30Z http://hdl.handle.net/10852/92623 http://urn.nb.no/URN:NBN:no-95222 https://doi.org/10.1029/2021GL093881 EN eng http://urn.nb.no/URN:NBN:no-95222 Angelopoulos, Michael Overduin, Pier Paul Jenrich, Maren Nitze, Ingmar Günther, Frank Strauss, Jens Westermann, Sebastian Schirrmeister, Lutz Kholodov, Alexander Krautblatter, Michael Grigoriev, Mikhail N. Grosse, Guido . Onshore Thermokarst Primes Subsea Permafrost Degradation. Geophysical Research Letters. 2021, 48(20) http://hdl.handle.net/10852/92623 1998225 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geophysical Research Letters&rft.volume=48&rft.spage=&rft.date=2021 Geophysical Research Letters 48 20 11 https://doi.org/10.1029/2021GL093881 URN:NBN:no-95222 Fulltext https://www.duo.uio.no/bitstream/handle/10852/92623/1/Geophysical%2BResearch%2BLetters%2B-%2B2021%2B-%2BAngelopoulos%2B-%2BOnshore%2BThermokarst%2BPrimes%2BSubsea%2BPermafrost%2BDegradation.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 0094-8276 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2022 ftoslouniv https://doi.org/10.1029/2021GL093881 2022-03-23T23:33:48Z 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. To test this hypothesis, we estimated depths to the top of ice-bearing permafrost offshore of the Bykovsky Peninsula in northeastern Siberia using electrical resistivity surveys. The surveys traversed submerged lagoon deposits, drained and refrozen Alas deposits, and undisturbed Yedoma from the coastline to 373 m offshore. While the permafrost degradation rates of the submerged Yedoma were in the range of similar sites, the submerged Alas permafrost degradation rates were up to 170urn:x-wiley:00948276:media:grl62785:grl62785-math-0001 faster. Remote sensing analyses suggest that 54urn:x-wiley:00948276:media:grl62785:grl62785-math-0002 of lagoons wider than 500 m along northeast Siberian and northwest American coasts originated in thermokarst basins. Given the abundance of thermokarst basins and lakes along parts of the Arctic coastline, their effect on subsea permafrost degradation must be similarly prevalent. Article in Journal/Newspaper Arctic Ice permafrost Thermokarst Siberia Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Geophysical Research Letters 48 20 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
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. To test this hypothesis, we estimated depths to the top of ice-bearing permafrost offshore of the Bykovsky Peninsula in northeastern Siberia using electrical resistivity surveys. The surveys traversed submerged lagoon deposits, drained and refrozen Alas deposits, and undisturbed Yedoma from the coastline to 373 m offshore. While the permafrost degradation rates of the submerged Yedoma were in the range of similar sites, the submerged Alas permafrost degradation rates were up to 170urn:x-wiley:00948276:media:grl62785:grl62785-math-0001 faster. Remote sensing analyses suggest that 54urn:x-wiley:00948276:media:grl62785:grl62785-math-0002 of lagoons wider than 500 m along northeast Siberian and northwest American coasts originated in thermokarst basins. Given the abundance of thermokarst basins and lakes along parts of the Arctic coastline, their effect on subsea permafrost degradation must be similarly prevalent. |
format |
Article in Journal/Newspaper |
author |
Angelopoulos, Michael Overduin, Pier Paul Jenrich, Maren Nitze, Ingmar Günther, Frank Strauss, Jens Westermann, Sebastian Schirrmeister, Lutz Kholodov, Alexander Krautblatter, Michael Grigoriev, Mikhail N. Grosse, Guido |
spellingShingle |
Angelopoulos, Michael Overduin, Pier Paul Jenrich, Maren Nitze, Ingmar Günther, Frank Strauss, Jens Westermann, Sebastian Schirrmeister, Lutz Kholodov, Alexander Krautblatter, Michael Grigoriev, Mikhail N. Grosse, Guido Onshore Thermokarst Primes Subsea Permafrost Degradation |
author_facet |
Angelopoulos, Michael Overduin, Pier Paul Jenrich, Maren Nitze, Ingmar Günther, Frank Strauss, Jens Westermann, Sebastian Schirrmeister, Lutz Kholodov, Alexander Krautblatter, Michael Grigoriev, Mikhail N. Grosse, Guido |
author_sort |
Angelopoulos, Michael |
title |
Onshore Thermokarst Primes Subsea Permafrost Degradation |
title_short |
Onshore Thermokarst Primes Subsea Permafrost Degradation |
title_full |
Onshore Thermokarst Primes Subsea Permafrost Degradation |
title_fullStr |
Onshore Thermokarst Primes Subsea Permafrost Degradation |
title_full_unstemmed |
Onshore Thermokarst Primes Subsea Permafrost Degradation |
title_sort |
onshore thermokarst primes subsea permafrost degradation |
publishDate |
2022 |
url |
http://hdl.handle.net/10852/92623 http://urn.nb.no/URN:NBN:no-95222 https://doi.org/10.1029/2021GL093881 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Thermokarst Siberia |
genre_facet |
Arctic Ice permafrost Thermokarst Siberia |
op_source |
0094-8276 |
op_relation |
http://urn.nb.no/URN:NBN:no-95222 Angelopoulos, Michael Overduin, Pier Paul Jenrich, Maren Nitze, Ingmar Günther, Frank Strauss, Jens Westermann, Sebastian Schirrmeister, Lutz Kholodov, Alexander Krautblatter, Michael Grigoriev, Mikhail N. Grosse, Guido . Onshore Thermokarst Primes Subsea Permafrost Degradation. Geophysical Research Letters. 2021, 48(20) http://hdl.handle.net/10852/92623 1998225 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geophysical Research Letters&rft.volume=48&rft.spage=&rft.date=2021 Geophysical Research Letters 48 20 11 https://doi.org/10.1029/2021GL093881 URN:NBN:no-95222 Fulltext https://www.duo.uio.no/bitstream/handle/10852/92623/1/Geophysical%2BResearch%2BLetters%2B-%2B2021%2B-%2BAngelopoulos%2B-%2BOnshore%2BThermokarst%2BPrimes%2BSubsea%2BPermafrost%2BDegradation.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2021GL093881 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
20 |
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1766335921685266432 |