Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts
Collapse of permafrost coasts delivers large quantities of particulate organic carbon (POC) to Arctic coastal areas. With rapidly changing environmental conditions, sediment and organic carbon (OC) mobilization and transport pathways are also changing. Here, we assess the sources and sinks of POC in...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2020
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Online Access: | https://research.vu.nl/en/publications/f2b09e6b-feb0-4d9a-aab6-5542aa861f14 https://doi.org/10.1029/2020GL088561 https://hdl.handle.net/1871.1/f2b09e6b-feb0-4d9a-aab6-5542aa861f14 http://www.scopus.com/inward/record.url?scp=85089383323&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85089383323&partnerID=8YFLogxK |
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ftvuamstcris:oai:research.vu.nl:publications/f2b09e6b-feb0-4d9a-aab6-5542aa861f14 2024-09-30T14:30:24+00:00 Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts Jong, Dirk Bröder, Lisa Tanski, George Fritz, Michael Lantuit, Hugues Tesi, Tommaso Haghipour, Negar Eglinton, Timothy I. Vonk, Jorien E. 2020-08-16 https://research.vu.nl/en/publications/f2b09e6b-feb0-4d9a-aab6-5542aa861f14 https://doi.org/10.1029/2020GL088561 https://hdl.handle.net/1871.1/f2b09e6b-feb0-4d9a-aab6-5542aa861f14 http://www.scopus.com/inward/record.url?scp=85089383323&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85089383323&partnerID=8YFLogxK eng eng https://research.vu.nl/en/publications/f2b09e6b-feb0-4d9a-aab6-5542aa861f14 info:eu-repo/semantics/openAccess Jong , D , Bröder , L , Tanski , G , Fritz , M , Lantuit , H , Tesi , T , Haghipour , N , Eglinton , T I & Vonk , J E 2020 , ' Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts ' , Geophysical Research Letters , vol. 47 , no. 15 , e2020GL088561 , pp. 1-10 . https://doi.org/10.1029/2020GL088561 Arctic carbon cycle coastal erosion nearshore zone particulate organic carbon permafrost /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2020 ftvuamstcris https://doi.org/10.1029/2020GL088561 2024-09-05T00:23:22Z Collapse of permafrost coasts delivers large quantities of particulate organic carbon (POC) to Arctic coastal areas. With rapidly changing environmental conditions, sediment and organic carbon (OC) mobilization and transport pathways are also changing. Here, we assess the sources and sinks of POC in the highly dynamic nearshore zone of Herschel Island-Qikiqtaruk (Yukon, Canada). Our results show that POC concentrations sharply decrease, from 15.9 to 0.3 mg L −1 , within the first 100–300 m offshore. Simultaneously, radiocarbon ages of POC drop from 16,400 to 3,600 14 C years, indicating rapid settling of old permafrost POC to underlying sediments. This suggests that permafrost OC is, apart from a very narrow resuspension zone (<5 m water depth), predominantly deposited in nearshore sediments. While long-term storage of permafrost OC in marine sediments potentially limits biodegradation and its subsequent release as greenhouse gas, resuspension of fine-grained, OC-rich sediments in the nearshore zone potentially enhances OC turnover. Article in Journal/Newspaper Arctic Herschel Herschel Island permafrost Yukon Vrije Universiteit Amsterdam (VU): Research Portal Arctic Canada Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Yukon Geophysical Research Letters 47 15 |
institution |
Open Polar |
collection |
Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
Arctic carbon cycle coastal erosion nearshore zone particulate organic carbon permafrost /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Arctic carbon cycle coastal erosion nearshore zone particulate organic carbon permafrost /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Jong, Dirk Bröder, Lisa Tanski, George Fritz, Michael Lantuit, Hugues Tesi, Tommaso Haghipour, Negar Eglinton, Timothy I. Vonk, Jorien E. Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts |
topic_facet |
Arctic carbon cycle coastal erosion nearshore zone particulate organic carbon permafrost /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Collapse of permafrost coasts delivers large quantities of particulate organic carbon (POC) to Arctic coastal areas. With rapidly changing environmental conditions, sediment and organic carbon (OC) mobilization and transport pathways are also changing. Here, we assess the sources and sinks of POC in the highly dynamic nearshore zone of Herschel Island-Qikiqtaruk (Yukon, Canada). Our results show that POC concentrations sharply decrease, from 15.9 to 0.3 mg L −1 , within the first 100–300 m offshore. Simultaneously, radiocarbon ages of POC drop from 16,400 to 3,600 14 C years, indicating rapid settling of old permafrost POC to underlying sediments. This suggests that permafrost OC is, apart from a very narrow resuspension zone (<5 m water depth), predominantly deposited in nearshore sediments. While long-term storage of permafrost OC in marine sediments potentially limits biodegradation and its subsequent release as greenhouse gas, resuspension of fine-grained, OC-rich sediments in the nearshore zone potentially enhances OC turnover. |
format |
Article in Journal/Newspaper |
author |
Jong, Dirk Bröder, Lisa Tanski, George Fritz, Michael Lantuit, Hugues Tesi, Tommaso Haghipour, Negar Eglinton, Timothy I. Vonk, Jorien E. |
author_facet |
Jong, Dirk Bröder, Lisa Tanski, George Fritz, Michael Lantuit, Hugues Tesi, Tommaso Haghipour, Negar Eglinton, Timothy I. Vonk, Jorien E. |
author_sort |
Jong, Dirk |
title |
Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts |
title_short |
Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts |
title_full |
Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts |
title_fullStr |
Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts |
title_full_unstemmed |
Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts |
title_sort |
nearshore zone dynamics determine pathway of organic carbon from eroding permafrost coasts |
publishDate |
2020 |
url |
https://research.vu.nl/en/publications/f2b09e6b-feb0-4d9a-aab6-5542aa861f14 https://doi.org/10.1029/2020GL088561 https://hdl.handle.net/1871.1/f2b09e6b-feb0-4d9a-aab6-5542aa861f14 http://www.scopus.com/inward/record.url?scp=85089383323&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85089383323&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Arctic Canada Herschel Island Yukon |
geographic_facet |
Arctic Canada Herschel Island Yukon |
genre |
Arctic Herschel Herschel Island permafrost Yukon |
genre_facet |
Arctic Herschel Herschel Island permafrost Yukon |
op_source |
Jong , D , Bröder , L , Tanski , G , Fritz , M , Lantuit , H , Tesi , T , Haghipour , N , Eglinton , T I & Vonk , J E 2020 , ' Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts ' , Geophysical Research Letters , vol. 47 , no. 15 , e2020GL088561 , pp. 1-10 . https://doi.org/10.1029/2020GL088561 |
op_relation |
https://research.vu.nl/en/publications/f2b09e6b-feb0-4d9a-aab6-5542aa861f14 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2020GL088561 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
15 |
_version_ |
1811635364788436992 |