Traveling Light: Arctic Coastal Erosion Releases Mostly Matrix Free, Unprotected Organic Carbon
Abstract The Arctic rapidly warms and sea ice retreats, a large fraction of organic carbon (OC), currently stored in coastal permafrost will be released into the marine system. Once reintroduced into the active carbon cycle, this material will either be decomposed or buried on the shelf depending on...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2024
|
Subjects: | |
Online Access: | https://doi.org/10.1029/2024GL108622 https://doaj.org/article/9018fc4696054ab0a3c643dd15f3f8f6 |
id |
ftdoajarticles:oai:doaj.org/article:9018fc4696054ab0a3c643dd15f3f8f6 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:9018fc4696054ab0a3c643dd15f3f8f6 2024-09-15T17:58:24+00:00 Traveling Light: Arctic Coastal Erosion Releases Mostly Matrix Free, Unprotected Organic Carbon F. C. J. vanCrimpen L. Madaj D. Whalen T. Tesi J. M. vanGenuchten L. Bröder T. I. Eglinton N. Haghipour J. E. Vonk 2024-08-01T00:00:00Z https://doi.org/10.1029/2024GL108622 https://doaj.org/article/9018fc4696054ab0a3c643dd15f3f8f6 EN eng Wiley https://doi.org/10.1029/2024GL108622 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2024GL108622 https://doaj.org/article/9018fc4696054ab0a3c643dd15f3f8f6 Geophysical Research Letters, Vol 51, Iss 16, Pp n/a-n/a (2024) permafrost organic carbon coastal erosion Canadian Beaufort sea hydrodynamic fractionation Geophysics. Cosmic physics QC801-809 article 2024 ftdoajarticles https://doi.org/10.1029/2024GL108622 2024-09-02T15:34:38Z Abstract The Arctic rapidly warms and sea ice retreats, a large fraction of organic carbon (OC), currently stored in coastal permafrost will be released into the marine system. Once reintroduced into the active carbon cycle, this material will either be decomposed or buried on the shelf depending on its hydrodynamic and chemical properties. Currently, carbon estimates are based on bulk measurements, which does not take the hydrodynamic pathway of different fractions into account. Therefore, eight coastal permafrost locations have been sampled along the Canadian Beaufort Sea Coast, hydrodynamically fractionated and analyzed for their C, N, 13C and 14C content. We found that the matrix‐free fraction (low density <1.8 g/cm3, and high‐density >1.8 g/cm3; <38 μm) account for 77%–98% of the OC. By using a coastal classification combined with field data, our results showed that short coastal segments can become key players in delivering matrix‐free, easily degradable OC to the marine system. Article in Journal/Newspaper Beaufort Sea Ice permafrost Sea ice Directory of Open Access Journals: DOAJ Articles Geophysical Research Letters 51 16 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
permafrost organic carbon coastal erosion Canadian Beaufort sea hydrodynamic fractionation Geophysics. Cosmic physics QC801-809 |
spellingShingle |
permafrost organic carbon coastal erosion Canadian Beaufort sea hydrodynamic fractionation Geophysics. Cosmic physics QC801-809 F. C. J. vanCrimpen L. Madaj D. Whalen T. Tesi J. M. vanGenuchten L. Bröder T. I. Eglinton N. Haghipour J. E. Vonk Traveling Light: Arctic Coastal Erosion Releases Mostly Matrix Free, Unprotected Organic Carbon |
topic_facet |
permafrost organic carbon coastal erosion Canadian Beaufort sea hydrodynamic fractionation Geophysics. Cosmic physics QC801-809 |
description |
Abstract The Arctic rapidly warms and sea ice retreats, a large fraction of organic carbon (OC), currently stored in coastal permafrost will be released into the marine system. Once reintroduced into the active carbon cycle, this material will either be decomposed or buried on the shelf depending on its hydrodynamic and chemical properties. Currently, carbon estimates are based on bulk measurements, which does not take the hydrodynamic pathway of different fractions into account. Therefore, eight coastal permafrost locations have been sampled along the Canadian Beaufort Sea Coast, hydrodynamically fractionated and analyzed for their C, N, 13C and 14C content. We found that the matrix‐free fraction (low density <1.8 g/cm3, and high‐density >1.8 g/cm3; <38 μm) account for 77%–98% of the OC. By using a coastal classification combined with field data, our results showed that short coastal segments can become key players in delivering matrix‐free, easily degradable OC to the marine system. |
format |
Article in Journal/Newspaper |
author |
F. C. J. vanCrimpen L. Madaj D. Whalen T. Tesi J. M. vanGenuchten L. Bröder T. I. Eglinton N. Haghipour J. E. Vonk |
author_facet |
F. C. J. vanCrimpen L. Madaj D. Whalen T. Tesi J. M. vanGenuchten L. Bröder T. I. Eglinton N. Haghipour J. E. Vonk |
author_sort |
F. C. J. vanCrimpen |
title |
Traveling Light: Arctic Coastal Erosion Releases Mostly Matrix Free, Unprotected Organic Carbon |
title_short |
Traveling Light: Arctic Coastal Erosion Releases Mostly Matrix Free, Unprotected Organic Carbon |
title_full |
Traveling Light: Arctic Coastal Erosion Releases Mostly Matrix Free, Unprotected Organic Carbon |
title_fullStr |
Traveling Light: Arctic Coastal Erosion Releases Mostly Matrix Free, Unprotected Organic Carbon |
title_full_unstemmed |
Traveling Light: Arctic Coastal Erosion Releases Mostly Matrix Free, Unprotected Organic Carbon |
title_sort |
traveling light: arctic coastal erosion releases mostly matrix free, unprotected organic carbon |
publisher |
Wiley |
publishDate |
2024 |
url |
https://doi.org/10.1029/2024GL108622 https://doaj.org/article/9018fc4696054ab0a3c643dd15f3f8f6 |
genre |
Beaufort Sea Ice permafrost Sea ice |
genre_facet |
Beaufort Sea Ice permafrost Sea ice |
op_source |
Geophysical Research Letters, Vol 51, Iss 16, Pp n/a-n/a (2024) |
op_relation |
https://doi.org/10.1029/2024GL108622 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2024GL108622 https://doaj.org/article/9018fc4696054ab0a3c643dd15f3f8f6 |
op_doi |
https://doi.org/10.1029/2024GL108622 |
container_title |
Geophysical Research Letters |
container_volume |
51 |
container_issue |
16 |
_version_ |
1810434801712234496 |