Seismic reflection imaging of mixing processes in Fram Strait
The West Spitsbergen Current, which flows northward along the western Svalbard continental slope, transports warm and saline Atlantic water (AW) into the Arctic Ocean. A combined analysis of high-resolution seismic images and hydrographic sections across this current has uncovered the oceanographic...
Published in: | Journal of Geophysical Research: Oceans |
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ftnerc:oai:nora.nerc.ac.uk:512539 2023-05-15T14:54:01+02:00 Seismic reflection imaging of mixing processes in Fram Strait Sarkar, Sudipta Sheen, Katy L. Klaeschen, Dirk Brearley, J. Alexander Minshull, Timothy A. Berndt, Christian Hobbs, Richard W. Naveira Garabato, Alberto C. 2015-10 text http://nora.nerc.ac.uk/id/eprint/512539/ https://nora.nerc.ac.uk/id/eprint/512539/1/Sarkar_et_al-2015-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1002/2015JC011009 en eng Wiley https://nora.nerc.ac.uk/id/eprint/512539/1/Sarkar_et_al-2015-Journal_of_Geophysical_Research__Oceans.pdf Sarkar, Sudipta; Sheen, Katy L.; Klaeschen, Dirk; Brearley, J. Alexander orcid:0000-0003-3700-8017 Minshull, Timothy A.; Berndt, Christian; Hobbs, Richard W.; Naveira Garabato, Alberto C. 2015 Seismic reflection imaging of mixing processes in Fram Strait. Journal of Geophysical Research: Oceans, 120 (10). 6884-6896. https://doi.org/10.1002/2015JC011009 <https://doi.org/10.1002/2015JC011009> cc_by_4 CC-BY Publication - Article PeerReviewed 2015 ftnerc https://doi.org/10.1002/2015JC011009 2023-02-04T19:42:31Z The West Spitsbergen Current, which flows northward along the western Svalbard continental slope, transports warm and saline Atlantic water (AW) into the Arctic Ocean. A combined analysis of high-resolution seismic images and hydrographic sections across this current has uncovered the oceanographic processes involved in horizontal and vertical mixing of AW. At the shelf break, where a strong horizontal temperature gradient exists east of the warmest AW, isopycnal interleaving of warm AW and surrounding colder waters is observed. Strong seismic reflections characterize these interleaving features, with a negative polarity reflection arising from an interface of warm water overlying colder water. A seismic-derived sound speed image reveals the extent and lateral continuity of such interleaving layers. There is evidence of obliquely aligned internal waves emanating from the slope at 450–500 m. They follow the predicted trajectory of internal S2 tidal waves and can promote vertical mixing between Atlantic and Arctic-origin waters. Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait Svalbard Spitsbergen Natural Environment Research Council: NERC Open Research Archive Arctic Arctic Ocean Svalbard Journal of Geophysical Research: Oceans 120 10 6884 6896 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The West Spitsbergen Current, which flows northward along the western Svalbard continental slope, transports warm and saline Atlantic water (AW) into the Arctic Ocean. A combined analysis of high-resolution seismic images and hydrographic sections across this current has uncovered the oceanographic processes involved in horizontal and vertical mixing of AW. At the shelf break, where a strong horizontal temperature gradient exists east of the warmest AW, isopycnal interleaving of warm AW and surrounding colder waters is observed. Strong seismic reflections characterize these interleaving features, with a negative polarity reflection arising from an interface of warm water overlying colder water. A seismic-derived sound speed image reveals the extent and lateral continuity of such interleaving layers. There is evidence of obliquely aligned internal waves emanating from the slope at 450–500 m. They follow the predicted trajectory of internal S2 tidal waves and can promote vertical mixing between Atlantic and Arctic-origin waters. |
format |
Article in Journal/Newspaper |
author |
Sarkar, Sudipta Sheen, Katy L. Klaeschen, Dirk Brearley, J. Alexander Minshull, Timothy A. Berndt, Christian Hobbs, Richard W. Naveira Garabato, Alberto C. |
spellingShingle |
Sarkar, Sudipta Sheen, Katy L. Klaeschen, Dirk Brearley, J. Alexander Minshull, Timothy A. Berndt, Christian Hobbs, Richard W. Naveira Garabato, Alberto C. Seismic reflection imaging of mixing processes in Fram Strait |
author_facet |
Sarkar, Sudipta Sheen, Katy L. Klaeschen, Dirk Brearley, J. Alexander Minshull, Timothy A. Berndt, Christian Hobbs, Richard W. Naveira Garabato, Alberto C. |
author_sort |
Sarkar, Sudipta |
title |
Seismic reflection imaging of mixing processes in Fram Strait |
title_short |
Seismic reflection imaging of mixing processes in Fram Strait |
title_full |
Seismic reflection imaging of mixing processes in Fram Strait |
title_fullStr |
Seismic reflection imaging of mixing processes in Fram Strait |
title_full_unstemmed |
Seismic reflection imaging of mixing processes in Fram Strait |
title_sort |
seismic reflection imaging of mixing processes in fram strait |
publisher |
Wiley |
publishDate |
2015 |
url |
http://nora.nerc.ac.uk/id/eprint/512539/ https://nora.nerc.ac.uk/id/eprint/512539/1/Sarkar_et_al-2015-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1002/2015JC011009 |
geographic |
Arctic Arctic Ocean Svalbard |
geographic_facet |
Arctic Arctic Ocean Svalbard |
genre |
Arctic Arctic Ocean Fram Strait Svalbard Spitsbergen |
genre_facet |
Arctic Arctic Ocean Fram Strait Svalbard Spitsbergen |
op_relation |
https://nora.nerc.ac.uk/id/eprint/512539/1/Sarkar_et_al-2015-Journal_of_Geophysical_Research__Oceans.pdf Sarkar, Sudipta; Sheen, Katy L.; Klaeschen, Dirk; Brearley, J. Alexander orcid:0000-0003-3700-8017 Minshull, Timothy A.; Berndt, Christian; Hobbs, Richard W.; Naveira Garabato, Alberto C. 2015 Seismic reflection imaging of mixing processes in Fram Strait. Journal of Geophysical Research: Oceans, 120 (10). 6884-6896. https://doi.org/10.1002/2015JC011009 <https://doi.org/10.1002/2015JC011009> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/2015JC011009 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
120 |
container_issue |
10 |
container_start_page |
6884 |
op_container_end_page |
6896 |
_version_ |
1766325720251891712 |