Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea
Reducing uncertainties about carbon cycling is important in the Arctic where rapid environmental changes contribute to enhanced mobilization of carbon. Here we quantify soil organic carbon (SOC) contents of permafrost soils along the Yukon Coastal Plain and determine the annual fluxes from coastal e...
Published in: | Journal of Geophysical Research: Biogeosciences |
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Online Access: | https://epic.awi.de/id/eprint/47719/ https://epic.awi.de/id/eprint/47719/1/Couture_et_al_2018_Coastal_erosion_of_permafrost_soils_along_the_YCP_and_fluxes_of_OC_to_the_Canadian_Beaufort_Sea.pdf https://hdl.handle.net/10013/epic.899d3ac4-854a-47a5-b2b7-e1ace8282658 https://hdl.handle.net/ |
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ftawi:oai:epic.awi.de:47719 2023-05-15T15:12:28+02:00 Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea Couture, Nicole J. Irrgang, Anna Pollard, Wayne H. Lantuit, Hugues Fritz, Michael 2018-01-24 application/pdf https://epic.awi.de/id/eprint/47719/ https://epic.awi.de/id/eprint/47719/1/Couture_et_al_2018_Coastal_erosion_of_permafrost_soils_along_the_YCP_and_fluxes_of_OC_to_the_Canadian_Beaufort_Sea.pdf https://hdl.handle.net/10013/epic.899d3ac4-854a-47a5-b2b7-e1ace8282658 https://hdl.handle.net/ unknown Wiley https://epic.awi.de/id/eprint/47719/1/Couture_et_al_2018_Coastal_erosion_of_permafrost_soils_along_the_YCP_and_fluxes_of_OC_to_the_Canadian_Beaufort_Sea.pdf https://hdl.handle.net/ Couture, N. J. , Irrgang, A. orcid:0000-0002-8158-9675 , Pollard, W. H. , Lantuit, H. orcid:0000-0003-1497-6760 and Fritz, M. orcid:0000-0003-4591-7325 (2018) Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea , Journal of Geophysical Research-Biogeosciences, 123 (2), pp. 406-422 . doi:10.1002/2017JG004166 <https://doi.org/10.1002/2017JG004166> , hdl:10013/epic.899d3ac4-854a-47a5-b2b7-e1ace8282658 EPIC3Journal of Geophysical Research-Biogeosciences, Wiley, 123(2), pp. 406-422, ISSN: 0148-0227 Article isiRev 2018 ftawi https://doi.org/10.1002/2017JG004166 2021-12-24T15:44:03Z Reducing uncertainties about carbon cycling is important in the Arctic where rapid environmental changes contribute to enhanced mobilization of carbon. Here we quantify soil organic carbon (SOC) contents of permafrost soils along the Yukon Coastal Plain and determine the annual fluxes from coastal erosion. Different terrain units were assessed based on surficial geology, morphology, and ground ice conditions. To account for the volume of wedge ice and massive ice in a unit, SOC contents were reduced by 19% and sediment contents by 16%. The SOC content in a 1 m² column of soil varied according to the height of the bluff, ranging from 30 to 662 kg, with a mean value of 183 kg. Forty‐four per cent of the SOC was within the top 1 m of soil and values varied based on surficial materials, ranging from 30 to 53 kg C/m³, with a mean of 41 kg. Eighty per cent of the shoreline was erosive with a mean annual rate of change of −0.7 m/yr. This resulted in a SOC flux per meter of shoreline of 132 kg C/m/yr, and a total flux for the entire 282 km of the Yukon coast of 35.5 × 10^6 kg C/yr (0.036 Tg C/yr). The mean flux of sediment per meter of shoreline was 5.3 × 103 kg/m/yr, with a total flux of 1,832 × 10^6 kg/yr (1.832 Tg/yr). Sedimentation rates indicate that approximately 13% of the eroded carbon was sequestered in nearshore sediments, where the overwhelming majority of organic carbon was of terrestrial origin. Article in Journal/Newspaper Arctic Beaufort Sea Ice permafrost wedge* Yukon Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Yukon The Bluff ENVELOPE(-61.567,-61.567,-64.367,-64.367) Journal of Geophysical Research: Biogeosciences 123 2 406 422 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Reducing uncertainties about carbon cycling is important in the Arctic where rapid environmental changes contribute to enhanced mobilization of carbon. Here we quantify soil organic carbon (SOC) contents of permafrost soils along the Yukon Coastal Plain and determine the annual fluxes from coastal erosion. Different terrain units were assessed based on surficial geology, morphology, and ground ice conditions. To account for the volume of wedge ice and massive ice in a unit, SOC contents were reduced by 19% and sediment contents by 16%. The SOC content in a 1 m² column of soil varied according to the height of the bluff, ranging from 30 to 662 kg, with a mean value of 183 kg. Forty‐four per cent of the SOC was within the top 1 m of soil and values varied based on surficial materials, ranging from 30 to 53 kg C/m³, with a mean of 41 kg. Eighty per cent of the shoreline was erosive with a mean annual rate of change of −0.7 m/yr. This resulted in a SOC flux per meter of shoreline of 132 kg C/m/yr, and a total flux for the entire 282 km of the Yukon coast of 35.5 × 10^6 kg C/yr (0.036 Tg C/yr). The mean flux of sediment per meter of shoreline was 5.3 × 103 kg/m/yr, with a total flux of 1,832 × 10^6 kg/yr (1.832 Tg/yr). Sedimentation rates indicate that approximately 13% of the eroded carbon was sequestered in nearshore sediments, where the overwhelming majority of organic carbon was of terrestrial origin. |
format |
Article in Journal/Newspaper |
author |
Couture, Nicole J. Irrgang, Anna Pollard, Wayne H. Lantuit, Hugues Fritz, Michael |
spellingShingle |
Couture, Nicole J. Irrgang, Anna Pollard, Wayne H. Lantuit, Hugues Fritz, Michael Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea |
author_facet |
Couture, Nicole J. Irrgang, Anna Pollard, Wayne H. Lantuit, Hugues Fritz, Michael |
author_sort |
Couture, Nicole J. |
title |
Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea |
title_short |
Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea |
title_full |
Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea |
title_fullStr |
Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea |
title_full_unstemmed |
Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea |
title_sort |
coastal erosion of permafrost soils along the yukon coastal plain and fluxes of organic carbon to the canadian beaufort sea |
publisher |
Wiley |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/47719/ https://epic.awi.de/id/eprint/47719/1/Couture_et_al_2018_Coastal_erosion_of_permafrost_soils_along_the_YCP_and_fluxes_of_OC_to_the_Canadian_Beaufort_Sea.pdf https://hdl.handle.net/10013/epic.899d3ac4-854a-47a5-b2b7-e1ace8282658 https://hdl.handle.net/ |
long_lat |
ENVELOPE(-61.567,-61.567,-64.367,-64.367) |
geographic |
Arctic Yukon The Bluff |
geographic_facet |
Arctic Yukon The Bluff |
genre |
Arctic Beaufort Sea Ice permafrost wedge* Yukon |
genre_facet |
Arctic Beaufort Sea Ice permafrost wedge* Yukon |
op_source |
EPIC3Journal of Geophysical Research-Biogeosciences, Wiley, 123(2), pp. 406-422, ISSN: 0148-0227 |
op_relation |
https://epic.awi.de/id/eprint/47719/1/Couture_et_al_2018_Coastal_erosion_of_permafrost_soils_along_the_YCP_and_fluxes_of_OC_to_the_Canadian_Beaufort_Sea.pdf https://hdl.handle.net/ Couture, N. J. , Irrgang, A. orcid:0000-0002-8158-9675 , Pollard, W. H. , Lantuit, H. orcid:0000-0003-1497-6760 and Fritz, M. orcid:0000-0003-4591-7325 (2018) Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea , Journal of Geophysical Research-Biogeosciences, 123 (2), pp. 406-422 . doi:10.1002/2017JG004166 <https://doi.org/10.1002/2017JG004166> , hdl:10013/epic.899d3ac4-854a-47a5-b2b7-e1ace8282658 |
op_doi |
https://doi.org/10.1002/2017JG004166 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
123 |
container_issue |
2 |
container_start_page |
406 |
op_container_end_page |
422 |
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1766343144912191488 |