Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean
We describe the evolution of coastal retrogressive thaw slumps (RTSs) between 1952 and 2011 along the Yukon Coast, Canada, and provide estimates of the contribution of RTSs to the nearshore organic carbon (OC) budget. We 1) monitor the evolution of RTSs during the periods 1952-1972 and 1972-2011; 2)...
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Biogeosciences
2018
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ftawi:oai:epic.awi.de:47924 2024-09-15T17:51:27+00:00 Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean Ramage, Justine Irrgang, Anna Morgenstern, Anne Lantuit, Hugues 2018-03-13 application/pdf https://epic.awi.de/id/eprint/47924/ https://epic.awi.de/id/eprint/47924/1/EUCOP_27062018_JustineRamage.pdf https://hdl.handle.net/10013/epic.c155c4ae-b9d8-4b71-b606-367b4bb9962c unknown Biogeosciences https://epic.awi.de/id/eprint/47924/1/EUCOP_27062018_JustineRamage.pdf Ramage, J. , Irrgang, A. orcid:0000-0002-8158-9675 , Morgenstern, A. orcid:0000-0002-6466-7571 and Lantuit, H. orcid:0000-0003-1497-6760 (2018) Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean , 5th European Conference on Permafrost, Chamonix, France, 22 June 2018 - 29 June 2018 . hdl:10013/epic.c155c4ae-b9d8-4b71-b606-367b4bb9962c EPIC35th European Conference on Permafrost, Chamonix, France, 2018-06-22-2018-06-29Copernicus Publications, Biogeosciences Conference notRev 2018 ftawi 2024-06-24T04:21:00Z We describe the evolution of coastal retrogressive thaw slumps (RTSs) between 1952 and 2011 along the Yukon Coast, Canada, and provide estimates of the contribution of RTSs to the nearshore organic carbon (OC) budget. We 1) monitor the evolution of RTSs during the periods 1952-1972 and 1972-2011; 2) calculate the volume of material eroded and stocks of OC mobilized through slumping and 3) measure the OC fluxes mobilized through slumping between 1972 and 2011. Our results show a 73% increase in the number of RTSs between 1952 and 2011. RTSs displaced at least 8600*103 m3 of material. Slumping mobilized 81900*103 kg of SOC and 156*103 kg of DOC. Since 1972, 17% of the RTSs have displaced 8.6*103 m3/yr of material, with an average OC flux of 82.5*103 kg/yr. This flux represents 0.3% of the OC flux released from coastal retreat; however RTSs have a strong impact on the transformation of OC in the coastal fringe. Conference Object Arctic Arctic Ocean Yukon Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
We describe the evolution of coastal retrogressive thaw slumps (RTSs) between 1952 and 2011 along the Yukon Coast, Canada, and provide estimates of the contribution of RTSs to the nearshore organic carbon (OC) budget. We 1) monitor the evolution of RTSs during the periods 1952-1972 and 1972-2011; 2) calculate the volume of material eroded and stocks of OC mobilized through slumping and 3) measure the OC fluxes mobilized through slumping between 1972 and 2011. Our results show a 73% increase in the number of RTSs between 1952 and 2011. RTSs displaced at least 8600*103 m3 of material. Slumping mobilized 81900*103 kg of SOC and 156*103 kg of DOC. Since 1972, 17% of the RTSs have displaced 8.6*103 m3/yr of material, with an average OC flux of 82.5*103 kg/yr. This flux represents 0.3% of the OC flux released from coastal retreat; however RTSs have a strong impact on the transformation of OC in the coastal fringe. |
format |
Conference Object |
author |
Ramage, Justine Irrgang, Anna Morgenstern, Anne Lantuit, Hugues |
spellingShingle |
Ramage, Justine Irrgang, Anna Morgenstern, Anne Lantuit, Hugues Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean |
author_facet |
Ramage, Justine Irrgang, Anna Morgenstern, Anne Lantuit, Hugues |
author_sort |
Ramage, Justine |
title |
Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean |
title_short |
Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean |
title_full |
Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean |
title_fullStr |
Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean |
title_full_unstemmed |
Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean |
title_sort |
increasing coastal slump activity impacts the release of sediment and organic carbon into the arctic ocean |
publisher |
Biogeosciences |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/47924/ https://epic.awi.de/id/eprint/47924/1/EUCOP_27062018_JustineRamage.pdf https://hdl.handle.net/10013/epic.c155c4ae-b9d8-4b71-b606-367b4bb9962c |
genre |
Arctic Arctic Ocean Yukon |
genre_facet |
Arctic Arctic Ocean Yukon |
op_source |
EPIC35th European Conference on Permafrost, Chamonix, France, 2018-06-22-2018-06-29Copernicus Publications, Biogeosciences |
op_relation |
https://epic.awi.de/id/eprint/47924/1/EUCOP_27062018_JustineRamage.pdf Ramage, J. , Irrgang, A. orcid:0000-0002-8158-9675 , Morgenstern, A. orcid:0000-0002-6466-7571 and Lantuit, H. orcid:0000-0003-1497-6760 (2018) Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean , 5th European Conference on Permafrost, Chamonix, France, 22 June 2018 - 29 June 2018 . hdl:10013/epic.c155c4ae-b9d8-4b71-b606-367b4bb9962c |
_version_ |
1810293363776159744 |