Onshore thermokarst primes subsea permafrost degradation
The response of permafrost to 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 ic...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , , , , , , , , , |
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Wiley-Blackwell
2021
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Online Access: | https://epic.awi.de/id/eprint/54596/ https://epic.awi.de/id/eprint/54596/1/onshore_thermokarst_primes_subsea_permafrost_degradation.pdf https://doi.org/10.1029/2021GL093881 https://hdl.handle.net/10013/epic.c7a10565-aebe-4f4c-bd82-ada30374f64c |
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ftawi:oai:epic.awi.de:54596 2024-03-24T08:59:51+00:00 Onshore thermokarst primes subsea permafrost degradation Angelopoulos, Michael Overduin, Pier Paul Jenrich, Maren Nitze, Ingmar Günther, Frank Strauss, Jens Westermann, Sebastian Schirrmeister, Lutz Kholodov, Aleksander L Krautblatter, Michael Grigoriev, Mikhail N Grosse, Guido 2021 application/pdf https://epic.awi.de/id/eprint/54596/ https://epic.awi.de/id/eprint/54596/1/onshore_thermokarst_primes_subsea_permafrost_degradation.pdf https://doi.org/10.1029/2021GL093881 https://hdl.handle.net/10013/epic.c7a10565-aebe-4f4c-bd82-ada30374f64c unknown Wiley-Blackwell https://epic.awi.de/id/eprint/54596/1/onshore_thermokarst_primes_subsea_permafrost_degradation.pdf Angelopoulos, M. orcid:0000-0003-2574-5108 , Overduin, P. P. orcid:0000-0001-9849-4712 , Jenrich, M. orcid:0000-0002-1330-7461 , Nitze, I. orcid:0000-0002-1165-6852 , Günther, F. orcid:0000-0001-8298-8937 , Strauss, J. orcid:0000-0003-4678-4982 , Westermann, S. , Schirrmeister, L. orcid:0000-0001-9455-0596 , Kholodov, A. L. , Krautblatter, M. , Grigoriev, M. N. and Grosse, G. orcid:0000-0001-5895-2141 (2021) Onshore thermokarst primes subsea permafrost degradation , Geophysical Research Letters . doi:10.1029/2021GL093881 <https://doi.org/10.1029/2021GL093881> , hdl:10013/epic.c7a10565-aebe-4f4c-bd82-ada30374f64c info:eu-repo/semantics/openAccess EPIC3Geophysical Research Letters, Wiley-Blackwell, ISSN: 0094-8276 Article isiRev info:eu-repo/semantics/article 2021 ftawi https://doi.org/10.1029/2021GL093881 2024-02-27T09:55:26Z The response of permafrost to 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 northeast 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 170% faster. Given the abundance of thermokarst basins and lakes along parts of the Arctic coastline, its effect on subsea permafrost degradation must be similarly prevalent. Remote sensing analyses suggest that 54% of lagoons wider than 500 m originated in thermokarst basins. Article in Journal/Newspaper Arctic Ice permafrost Thermokarst Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Geophysical Research Letters 48 20 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The response of permafrost to 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 northeast 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 170% faster. Given the abundance of thermokarst basins and lakes along parts of the Arctic coastline, its effect on subsea permafrost degradation must be similarly prevalent. Remote sensing analyses suggest that 54% of lagoons wider than 500 m originated in thermokarst basins. |
format |
Article in Journal/Newspaper |
author |
Angelopoulos, Michael Overduin, Pier Paul Jenrich, Maren Nitze, Ingmar Günther, Frank Strauss, Jens Westermann, Sebastian Schirrmeister, Lutz Kholodov, Aleksander L 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, Aleksander L 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, Aleksander L 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 |
publisher |
Wiley-Blackwell |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/54596/ https://epic.awi.de/id/eprint/54596/1/onshore_thermokarst_primes_subsea_permafrost_degradation.pdf https://doi.org/10.1029/2021GL093881 https://hdl.handle.net/10013/epic.c7a10565-aebe-4f4c-bd82-ada30374f64c |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Thermokarst Siberia |
genre_facet |
Arctic Ice permafrost Thermokarst Siberia |
op_source |
EPIC3Geophysical Research Letters, Wiley-Blackwell, ISSN: 0094-8276 |
op_relation |
https://epic.awi.de/id/eprint/54596/1/onshore_thermokarst_primes_subsea_permafrost_degradation.pdf Angelopoulos, M. orcid:0000-0003-2574-5108 , Overduin, P. P. orcid:0000-0001-9849-4712 , Jenrich, M. orcid:0000-0002-1330-7461 , Nitze, I. orcid:0000-0002-1165-6852 , Günther, F. orcid:0000-0001-8298-8937 , Strauss, J. orcid:0000-0003-4678-4982 , Westermann, S. , Schirrmeister, L. orcid:0000-0001-9455-0596 , Kholodov, A. L. , Krautblatter, M. , Grigoriev, M. N. and Grosse, G. orcid:0000-0001-5895-2141 (2021) Onshore thermokarst primes subsea permafrost degradation , Geophysical Research Letters . doi:10.1029/2021GL093881 <https://doi.org/10.1029/2021GL093881> , hdl:10013/epic.c7a10565-aebe-4f4c-bd82-ada30374f64c |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2021GL093881 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
20 |
_version_ |
1794399732372602880 |