Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf
Atlantic Water (AW) flowing along the western and northern Svalbard shelf-break extends the Atlantic domain into the Arctic and is the region’s major source of heat, nutrients and advected plankton. We investigated the inflow and recirculation of AW into four major troughs that cut into the Svalbard...
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Online Access: | https://hdl.handle.net/10037/19937 https://doi.org/10.1016/j.pocean.2020.102447 |
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ftunivtroemsoe:oai:munin.uit.no:10037/19937 2023-05-15T14:26:22+02:00 Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf Menze, Sebastian Ingvaldsen, Randi Brunvær Nikolopoulos, Anna Hattermann, Tore Albretsen, Jon Gjøsæter, Harald 2020-09-30 https://hdl.handle.net/10037/19937 https://doi.org/10.1016/j.pocean.2020.102447 eng eng Elsevier Progress in Oceanography info:eu-repo/grantAgreement/RCN/SIPHINIFES/228896/Norway/The Arctic Ocean Ecosystem - Polhavets økosystem// Menze, Ingvaldsen R, Nikolopoulos A, Hattermann, Albretsen, Gjøsæter. Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf. Progress in Oceanography. 2020;188 FRIDAID 1842484 doi:10.1016/j.pocean.2020.102447 0079-6611 1873-4472 https://hdl.handle.net/10037/19937 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400::Physics: 430 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1016/j.pocean.2020.102447 2021-06-25T17:57:49Z Atlantic Water (AW) flowing along the western and northern Svalbard shelf-break extends the Atlantic domain into the Arctic and is the region’s major source of heat, nutrients and advected plankton. We investigated the inflow and recirculation of AW into four major troughs that cut into the Svalbard shelf, the Isfjorden, Kongsfjorden, Hinlopen and Kvitøya Troughs, and related the circulation patterns to acoustic backscatter observed with echosounders and Acoustic Doppler Current Profilers. The acoustic observations showed higher levels of backscatter from fish in the Hinlopen Trough compared to the shelf and shelf-break north of Svalbard. This coincides with a steady inflow of nutrients, biomass and heat into the trough with the AW. Trough circulation was characterized using output from a high-resolution regional ocean model and particle tracking simulations. All four troughs experience topographically steered recirculation (in-and-outflow) of AW, but the troughs on the western Svalbard shelf showed a stronger seasonality than the troughs on the northern shelf. The Hinlopen Trough receives the strongest AW inflow and the most direct inflow from the shelf-break boundary current. The troughs form hybrid habitats between the shelf and shelf-break that extend the Atlantic advective domain closer to the Svalbard coastline. Article in Journal/Newspaper Arctic Arctic Isfjord* Isfjorden Kongsfjord* Kongsfjorden Kvitøya Svalbard University of Tromsø: Munin Open Research Archive Arctic Hinlopen Trough ENVELOPE(17.000,17.000,81.833,81.833) Svalbard Progress in Oceanography 188 102447 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Physics: 430 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 |
spellingShingle |
VDP::Mathematics and natural science: 400::Physics: 430 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 Menze, Sebastian Ingvaldsen, Randi Brunvær Nikolopoulos, Anna Hattermann, Tore Albretsen, Jon Gjøsæter, Harald Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf |
topic_facet |
VDP::Mathematics and natural science: 400::Physics: 430 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 |
description |
Atlantic Water (AW) flowing along the western and northern Svalbard shelf-break extends the Atlantic domain into the Arctic and is the region’s major source of heat, nutrients and advected plankton. We investigated the inflow and recirculation of AW into four major troughs that cut into the Svalbard shelf, the Isfjorden, Kongsfjorden, Hinlopen and Kvitøya Troughs, and related the circulation patterns to acoustic backscatter observed with echosounders and Acoustic Doppler Current Profilers. The acoustic observations showed higher levels of backscatter from fish in the Hinlopen Trough compared to the shelf and shelf-break north of Svalbard. This coincides with a steady inflow of nutrients, biomass and heat into the trough with the AW. Trough circulation was characterized using output from a high-resolution regional ocean model and particle tracking simulations. All four troughs experience topographically steered recirculation (in-and-outflow) of AW, but the troughs on the western Svalbard shelf showed a stronger seasonality than the troughs on the northern shelf. The Hinlopen Trough receives the strongest AW inflow and the most direct inflow from the shelf-break boundary current. The troughs form hybrid habitats between the shelf and shelf-break that extend the Atlantic advective domain closer to the Svalbard coastline. |
format |
Article in Journal/Newspaper |
author |
Menze, Sebastian Ingvaldsen, Randi Brunvær Nikolopoulos, Anna Hattermann, Tore Albretsen, Jon Gjøsæter, Harald |
author_facet |
Menze, Sebastian Ingvaldsen, Randi Brunvær Nikolopoulos, Anna Hattermann, Tore Albretsen, Jon Gjøsæter, Harald |
author_sort |
Menze, Sebastian |
title |
Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf |
title_short |
Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf |
title_full |
Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf |
title_fullStr |
Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf |
title_full_unstemmed |
Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf |
title_sort |
productive detours – atlantic water inflow and acoustic backscatter in the major troughs along the svalbard shelf |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/19937 https://doi.org/10.1016/j.pocean.2020.102447 |
long_lat |
ENVELOPE(17.000,17.000,81.833,81.833) |
geographic |
Arctic Hinlopen Trough Svalbard |
geographic_facet |
Arctic Hinlopen Trough Svalbard |
genre |
Arctic Arctic Isfjord* Isfjorden Kongsfjord* Kongsfjorden Kvitøya Svalbard |
genre_facet |
Arctic Arctic Isfjord* Isfjorden Kongsfjord* Kongsfjorden Kvitøya Svalbard |
op_relation |
Progress in Oceanography info:eu-repo/grantAgreement/RCN/SIPHINIFES/228896/Norway/The Arctic Ocean Ecosystem - Polhavets økosystem// Menze, Ingvaldsen R, Nikolopoulos A, Hattermann, Albretsen, Gjøsæter. Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf. Progress in Oceanography. 2020;188 FRIDAID 1842484 doi:10.1016/j.pocean.2020.102447 0079-6611 1873-4472 https://hdl.handle.net/10037/19937 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1016/j.pocean.2020.102447 |
container_title |
Progress in Oceanography |
container_volume |
188 |
container_start_page |
102447 |
_version_ |
1766298895618408448 |