Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea
The Canadian Beaufort Sea receives large quantities of sediment, organic carbon and nutrients from rapid coastal erosion and permafrost degradation. In addition, the Mackenzie River, the largest North American Arctic river, discharges great amounts of freshwater, dissolved solids and suspended sedim...
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ftawi:oai:epic.awi.de:56642 2023-05-15T15:08:26+02:00 Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea Bröder, Lisa Lattaud, Julie Juhls, Bennet Eulenburg, Antje Priest, Taylor Fritz, Michael Matsuoka, Atsushi Pellerin, André Bossé-Demers, Thomas Rudbäck, Daniel O'Regan, Matt Whalen, Dustin Haghipour, Negar Eglinton, Timothy Overduin, Paul Vonk, Jorien 2022-05-24 https://epic.awi.de/id/eprint/56642/ https://doi.org/10.5194/egusphere-egu22-8694 https://hdl.handle.net/10013/epic.7f8781a9-c081-4f40-9e20-1fb342c643a3 unknown Bröder, L. , Lattaud, J. , Juhls, B. orcid:0000-0002-5844-6318 , Eulenburg, A. , Priest, T. , Fritz, M. orcid:0000-0003-4591-7325 , Matsuoka, A. , Pellerin, A. , Bossé-Demers, T. , Rudbäck, D. , O'Regan, M. , Whalen, D. , Haghipour, N. , Eglinton, T. , Overduin, P. orcid:0000-0001-9849-4712 and Vonk, J. (2022) Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea , EGU General Assembly 2022, Vienna, Austria, 23 May 2022 - 27 May 2022 . doi:10.5194/egusphere-egu22-8694 <https://doi.org/10.5194/egusphere-egu22-8694> , hdl:10013/epic.7f8781a9-c081-4f40-9e20-1fb342c643a3 EPIC3EGU General Assembly 2022, Vienna, Austria, 2022-05-23-2022-05-27Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea Conference notRev 2022 ftawi https://doi.org/10.5194/egusphere-egu22-8694 2022-10-09T23:12:45Z The Canadian Beaufort Sea receives large quantities of sediment, organic carbon and nutrients from rapid coastal erosion and permafrost degradation. In addition, the Mackenzie River, the largest North American Arctic river, discharges great amounts of freshwater, dissolved solids and suspended sediments to the Beaufort Sea. Current changes in these fluxes in response to the warming climate have uncertain consequences for the carbon budget on the shelf and in the deep ocean. To investigate the movement and transformation of organic matter along the land-ocean continuum, we collected water and surface sediment samples along five major transects across the Beaufort Sea during the 2021 expedition of the Canadian Coast Guard Ship Amundsen. Sampling locations span from shallow, coastal, sites with water depths ≤ 20 m, to shelf-break and deep-water settings on the continental slope (water depths of ≥1000 m). For this study, we use stable and radiocarbon isotopic (δ13C and Δ14C) analyses of dissolved inorganic (DIC), dissolved organic (DOC) and particulate organic carbon (POC) for surface and bottom waters, as well as surface sediments, in order to compare, contrast and constrain the relative source contributions and ages of these different forms of carbon. Our results will help to better understand the fate of permafrost organic matter in the marine environment and to ultimately improve assessments of the Canadian Beaufort Sea shelf as a carbon source or sink and its potential trajectory with ongoing environmental changes. Conference Object Arctic Beaufort Sea Mackenzie river permafrost Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Mackenzie River |
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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 |
The Canadian Beaufort Sea receives large quantities of sediment, organic carbon and nutrients from rapid coastal erosion and permafrost degradation. In addition, the Mackenzie River, the largest North American Arctic river, discharges great amounts of freshwater, dissolved solids and suspended sediments to the Beaufort Sea. Current changes in these fluxes in response to the warming climate have uncertain consequences for the carbon budget on the shelf and in the deep ocean. To investigate the movement and transformation of organic matter along the land-ocean continuum, we collected water and surface sediment samples along five major transects across the Beaufort Sea during the 2021 expedition of the Canadian Coast Guard Ship Amundsen. Sampling locations span from shallow, coastal, sites with water depths ≤ 20 m, to shelf-break and deep-water settings on the continental slope (water depths of ≥1000 m). For this study, we use stable and radiocarbon isotopic (δ13C and Δ14C) analyses of dissolved inorganic (DIC), dissolved organic (DOC) and particulate organic carbon (POC) for surface and bottom waters, as well as surface sediments, in order to compare, contrast and constrain the relative source contributions and ages of these different forms of carbon. Our results will help to better understand the fate of permafrost organic matter in the marine environment and to ultimately improve assessments of the Canadian Beaufort Sea shelf as a carbon source or sink and its potential trajectory with ongoing environmental changes. |
format |
Conference Object |
author |
Bröder, Lisa Lattaud, Julie Juhls, Bennet Eulenburg, Antje Priest, Taylor Fritz, Michael Matsuoka, Atsushi Pellerin, André Bossé-Demers, Thomas Rudbäck, Daniel O'Regan, Matt Whalen, Dustin Haghipour, Negar Eglinton, Timothy Overduin, Paul Vonk, Jorien |
spellingShingle |
Bröder, Lisa Lattaud, Julie Juhls, Bennet Eulenburg, Antje Priest, Taylor Fritz, Michael Matsuoka, Atsushi Pellerin, André Bossé-Demers, Thomas Rudbäck, Daniel O'Regan, Matt Whalen, Dustin Haghipour, Negar Eglinton, Timothy Overduin, Paul Vonk, Jorien Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea |
author_facet |
Bröder, Lisa Lattaud, Julie Juhls, Bennet Eulenburg, Antje Priest, Taylor Fritz, Michael Matsuoka, Atsushi Pellerin, André Bossé-Demers, Thomas Rudbäck, Daniel O'Regan, Matt Whalen, Dustin Haghipour, Negar Eglinton, Timothy Overduin, Paul Vonk, Jorien |
author_sort |
Bröder, Lisa |
title |
Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea |
title_short |
Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea |
title_full |
Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea |
title_fullStr |
Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea |
title_full_unstemmed |
Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea |
title_sort |
tracing the footprint of permafrost carbon supply to the canadian beaufort sea |
publishDate |
2022 |
url |
https://epic.awi.de/id/eprint/56642/ https://doi.org/10.5194/egusphere-egu22-8694 https://hdl.handle.net/10013/epic.7f8781a9-c081-4f40-9e20-1fb342c643a3 |
geographic |
Arctic Mackenzie River |
geographic_facet |
Arctic Mackenzie River |
genre |
Arctic Beaufort Sea Mackenzie river permafrost |
genre_facet |
Arctic Beaufort Sea Mackenzie river permafrost |
op_source |
EPIC3EGU General Assembly 2022, Vienna, Austria, 2022-05-23-2022-05-27Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea |
op_relation |
Bröder, L. , Lattaud, J. , Juhls, B. orcid:0000-0002-5844-6318 , Eulenburg, A. , Priest, T. , Fritz, M. orcid:0000-0003-4591-7325 , Matsuoka, A. , Pellerin, A. , Bossé-Demers, T. , Rudbäck, D. , O'Regan, M. , Whalen, D. , Haghipour, N. , Eglinton, T. , Overduin, P. orcid:0000-0001-9849-4712 and Vonk, J. (2022) Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea , EGU General Assembly 2022, Vienna, Austria, 23 May 2022 - 27 May 2022 . doi:10.5194/egusphere-egu22-8694 <https://doi.org/10.5194/egusphere-egu22-8694> , hdl:10013/epic.7f8781a9-c081-4f40-9e20-1fb342c643a3 |
op_doi |
https://doi.org/10.5194/egusphere-egu22-8694 |
_version_ |
1766339802870841344 |