Organic Matter Sources in North Atlantic Fjord Sediments
Source at https://doi.org/10.1029/2019GC008382. ©2019. American Geophysical Union. All Rights Reserved. To better constrain the global carbon cycle fundamental knowledge of the role of carbon cycling on continental margins is crucial. Fjords are particularly important shelf areas for carbon burial d...
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Online Access: | https://hdl.handle.net/10037/15823 https://doi.org/10.1029/2019GC008382 |
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ftunivtroemsoe:oai:munin.uit.no:10037/15823 2023-05-15T14:26:08+02:00 Organic Matter Sources in North Atlantic Fjord Sediments Faust, Johan Christoph Knies, Jochen 2019-05-31 https://hdl.handle.net/10037/15823 https://doi.org/10.1029/2019GC008382 eng eng Wiley Geochemistry Geophysics Geosystems info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Faust, J.C. & Knies, J. (2019). Organic Matter Sources in North Atlantic Fjord Sediments. Geochemistry, Geophysics, Geosystems, 20 (6), 2872-2885. https://doi.org/10.1029/2019GC008382 FRIDAID 1706722 doi:10.1029/2019GC008382 1525-2027 https://hdl.handle.net/10037/15823 openAccess VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 fjord organic carbon source to sink land-ocean interaction carbon accumulation marine sediments Journal article Tidsskriftartikkel Peer reviewed 2019 ftunivtroemsoe https://doi.org/10.1029/2019GC008382 2021-06-25T17:56:44Z Source at https://doi.org/10.1029/2019GC008382. ©2019. American Geophysical Union. All Rights Reserved. To better constrain the global carbon cycle fundamental knowledge of the role of carbon cycling on continental margins is crucial. Fjords are particularly important shelf areas for carbon burial due to relatively high sedimentation rates and high organic matter fluxes. As terrigenous organic matter is more resistant to remineralization than marine organic matter, a comprehensive knowledge of the carbon source is critical to better constrain the efficiency of organic carbon burial in fjord sediments. Here we investigated highly productive fjords in northern Norway and compare our results with both existing and new organic carbon to organic nitrogen ratios and carbon stable isotope compositions from fjords in mid‐Norway, west Svalbard, and east Greenland. The marine organic carbon contribution varies significantly between these fjords, and the contribution of marine organic carbon in Norwegian fjords is much larger than previously suggested for fjords in NW Europe and also globally. Additionally, northern Norwegian fjords show very high marine carbon burial rates (73.6 gC · m ‐2 · year ‐1 ) suggesting that these fjords are probably very distinct carbon burial hotspots. We argue that the North Atlantic Current inflow sustains these high burial rates and changes in the current strength due to ongoing climate change are likely to have a pronounced effect on carbon burial in North Atlantic fjords. Article in Journal/Newspaper Arctic East Greenland Greenland north atlantic current North Atlantic Northern Norway Svalbard University of Tromsø: Munin Open Research Archive Greenland Norway Svalbard Geochemistry, Geophysics, Geosystems 20 6 2872 2885 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 fjord organic carbon source to sink land-ocean interaction carbon accumulation marine sediments |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 fjord organic carbon source to sink land-ocean interaction carbon accumulation marine sediments Faust, Johan Christoph Knies, Jochen Organic Matter Sources in North Atlantic Fjord Sediments |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 fjord organic carbon source to sink land-ocean interaction carbon accumulation marine sediments |
description |
Source at https://doi.org/10.1029/2019GC008382. ©2019. American Geophysical Union. All Rights Reserved. To better constrain the global carbon cycle fundamental knowledge of the role of carbon cycling on continental margins is crucial. Fjords are particularly important shelf areas for carbon burial due to relatively high sedimentation rates and high organic matter fluxes. As terrigenous organic matter is more resistant to remineralization than marine organic matter, a comprehensive knowledge of the carbon source is critical to better constrain the efficiency of organic carbon burial in fjord sediments. Here we investigated highly productive fjords in northern Norway and compare our results with both existing and new organic carbon to organic nitrogen ratios and carbon stable isotope compositions from fjords in mid‐Norway, west Svalbard, and east Greenland. The marine organic carbon contribution varies significantly between these fjords, and the contribution of marine organic carbon in Norwegian fjords is much larger than previously suggested for fjords in NW Europe and also globally. Additionally, northern Norwegian fjords show very high marine carbon burial rates (73.6 gC · m ‐2 · year ‐1 ) suggesting that these fjords are probably very distinct carbon burial hotspots. We argue that the North Atlantic Current inflow sustains these high burial rates and changes in the current strength due to ongoing climate change are likely to have a pronounced effect on carbon burial in North Atlantic fjords. |
format |
Article in Journal/Newspaper |
author |
Faust, Johan Christoph Knies, Jochen |
author_facet |
Faust, Johan Christoph Knies, Jochen |
author_sort |
Faust, Johan Christoph |
title |
Organic Matter Sources in North Atlantic Fjord Sediments |
title_short |
Organic Matter Sources in North Atlantic Fjord Sediments |
title_full |
Organic Matter Sources in North Atlantic Fjord Sediments |
title_fullStr |
Organic Matter Sources in North Atlantic Fjord Sediments |
title_full_unstemmed |
Organic Matter Sources in North Atlantic Fjord Sediments |
title_sort |
organic matter sources in north atlantic fjord sediments |
publisher |
Wiley |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/15823 https://doi.org/10.1029/2019GC008382 |
geographic |
Greenland Norway Svalbard |
geographic_facet |
Greenland Norway Svalbard |
genre |
Arctic East Greenland Greenland north atlantic current North Atlantic Northern Norway Svalbard |
genre_facet |
Arctic East Greenland Greenland north atlantic current North Atlantic Northern Norway Svalbard |
op_relation |
Geochemistry Geophysics Geosystems info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Faust, J.C. & Knies, J. (2019). Organic Matter Sources in North Atlantic Fjord Sediments. Geochemistry, Geophysics, Geosystems, 20 (6), 2872-2885. https://doi.org/10.1029/2019GC008382 FRIDAID 1706722 doi:10.1029/2019GC008382 1525-2027 https://hdl.handle.net/10037/15823 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1029/2019GC008382 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
20 |
container_issue |
6 |
container_start_page |
2872 |
op_container_end_page |
2885 |
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1766298614921953280 |