Water mass distribution in Fram Strait and over the Yermak Plateau in summer 1997
International audience The water mass distribution in northern Fram Strait and over the Yermak Plateau in summer 1997 is described using CTD data from two cruises in the area. The West Spitsbergen Current was found to split, one part recirculated towards the west, while the other part, on entering t...
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ftccsdartic:oai:HAL:hal-00316683v1 2023-05-15T14:53:11+02:00 Water mass distribution in Fram Strait and over the Yermak Plateau in summer 1997 Rudels, B. Meyer, R. Fahrbach, E. Ivanov, V. V. Østerhus, S. Quadfasel, D. Schauer, U. Tverberg, V. Woodgate, R. A. Finnish Institute of Marine Research (FIMR) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) Arctic and Antarctic Research Institute (AARI) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) Geophysical Institute Bergen (GFI / BiU) University of Bergen (UiB) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU) The University Centre in Svalbard (UNIS) Applied Physics Laboratory Seattle (APL-UW) University of Washington Seattle 2000 https://hal.archives-ouvertes.fr/hal-00316683 https://hal.archives-ouvertes.fr/hal-00316683/document https://hal.archives-ouvertes.fr/hal-00316683/file/angeo-18-687-2000.pdf en eng HAL CCSD European Geosciences Union hal-00316683 https://hal.archives-ouvertes.fr/hal-00316683 https://hal.archives-ouvertes.fr/hal-00316683/document https://hal.archives-ouvertes.fr/hal-00316683/file/angeo-18-687-2000.pdf info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.archives-ouvertes.fr/hal-00316683 Annales Geophysicae, European Geosciences Union, 2000, 18 (6), pp.687-705 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2000 ftccsdartic 2021-01-31T00:14:30Z International audience The water mass distribution in northern Fram Strait and over the Yermak Plateau in summer 1997 is described using CTD data from two cruises in the area. The West Spitsbergen Current was found to split, one part recirculated towards the west, while the other part, on entering the Arctic Ocean separated into two branches. The main inflow of Atlantic Water followed the Svalbard continental slope eastward, while a second, narrower, branch stayed west and north of the Yermak Plateau. The water column above the southeastern flank of the Yermak Plateau was distinctly colder and less saline than the two inflow branches. Immediately west of the outer inflow branch comparatively high temperatures in the Atlantic Layer suggested that a part of the extraordinarily warm Atlantic Water, observed in the boundary current in the Eurasian Basin in the early 1990s, was now returning, within the Eurasian Basin, toward Fram Strait. The upper layer west of the Yermak Plateau was cold, deep and comparably saline, similar to what has recently been observed in the interior Eurasian Basin. Closer to the Greenland continental slope the salinity of the upper layer became much lower, and the temperature maximum of the Atlantic Layer was occasionally below 0.5 °C, indicating water masses mainly derived from the Canadian Basin. This implies that the warm pulse of Atlantic Water had not yet made a complete circuit around the Arctic Ocean. The Atlantic Water of the West Spitsbergen Current recirculating within the strait did not extend as far towards Greenland as in the 1980s, leaving a broader passage for waters from the Atlantic and intermediate layers, exiting the Arctic Ocean. A possible interpretation is that the circulation pattern alternates between a strong recirculation of the West Spitsbergen Current in the strait, and a larger exchange of Atlantic Water between the Nordic Seas and the inner parts of the Arctic Ocean. Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait Greenland Nordic Seas Svalbard Yermak plateau Spitsbergen Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Arctic Ocean Svalbard Greenland Yermak Plateau ENVELOPE(5.000,5.000,81.250,81.250) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Rudels, B. Meyer, R. Fahrbach, E. Ivanov, V. V. Østerhus, S. Quadfasel, D. Schauer, U. Tverberg, V. Woodgate, R. A. Water mass distribution in Fram Strait and over the Yermak Plateau in summer 1997 |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The water mass distribution in northern Fram Strait and over the Yermak Plateau in summer 1997 is described using CTD data from two cruises in the area. The West Spitsbergen Current was found to split, one part recirculated towards the west, while the other part, on entering the Arctic Ocean separated into two branches. The main inflow of Atlantic Water followed the Svalbard continental slope eastward, while a second, narrower, branch stayed west and north of the Yermak Plateau. The water column above the southeastern flank of the Yermak Plateau was distinctly colder and less saline than the two inflow branches. Immediately west of the outer inflow branch comparatively high temperatures in the Atlantic Layer suggested that a part of the extraordinarily warm Atlantic Water, observed in the boundary current in the Eurasian Basin in the early 1990s, was now returning, within the Eurasian Basin, toward Fram Strait. The upper layer west of the Yermak Plateau was cold, deep and comparably saline, similar to what has recently been observed in the interior Eurasian Basin. Closer to the Greenland continental slope the salinity of the upper layer became much lower, and the temperature maximum of the Atlantic Layer was occasionally below 0.5 °C, indicating water masses mainly derived from the Canadian Basin. This implies that the warm pulse of Atlantic Water had not yet made a complete circuit around the Arctic Ocean. The Atlantic Water of the West Spitsbergen Current recirculating within the strait did not extend as far towards Greenland as in the 1980s, leaving a broader passage for waters from the Atlantic and intermediate layers, exiting the Arctic Ocean. A possible interpretation is that the circulation pattern alternates between a strong recirculation of the West Spitsbergen Current in the strait, and a larger exchange of Atlantic Water between the Nordic Seas and the inner parts of the Arctic Ocean. |
author2 |
Finnish Institute of Marine Research (FIMR) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) Arctic and Antarctic Research Institute (AARI) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) Geophysical Institute Bergen (GFI / BiU) University of Bergen (UiB) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU) The University Centre in Svalbard (UNIS) Applied Physics Laboratory Seattle (APL-UW) University of Washington Seattle |
format |
Article in Journal/Newspaper |
author |
Rudels, B. Meyer, R. Fahrbach, E. Ivanov, V. V. Østerhus, S. Quadfasel, D. Schauer, U. Tverberg, V. Woodgate, R. A. |
author_facet |
Rudels, B. Meyer, R. Fahrbach, E. Ivanov, V. V. Østerhus, S. Quadfasel, D. Schauer, U. Tverberg, V. Woodgate, R. A. |
author_sort |
Rudels, B. |
title |
Water mass distribution in Fram Strait and over the Yermak Plateau in summer 1997 |
title_short |
Water mass distribution in Fram Strait and over the Yermak Plateau in summer 1997 |
title_full |
Water mass distribution in Fram Strait and over the Yermak Plateau in summer 1997 |
title_fullStr |
Water mass distribution in Fram Strait and over the Yermak Plateau in summer 1997 |
title_full_unstemmed |
Water mass distribution in Fram Strait and over the Yermak Plateau in summer 1997 |
title_sort |
water mass distribution in fram strait and over the yermak plateau in summer 1997 |
publisher |
HAL CCSD |
publishDate |
2000 |
url |
https://hal.archives-ouvertes.fr/hal-00316683 https://hal.archives-ouvertes.fr/hal-00316683/document https://hal.archives-ouvertes.fr/hal-00316683/file/angeo-18-687-2000.pdf |
long_lat |
ENVELOPE(5.000,5.000,81.250,81.250) |
geographic |
Arctic Arctic Ocean Svalbard Greenland Yermak Plateau |
geographic_facet |
Arctic Arctic Ocean Svalbard Greenland Yermak Plateau |
genre |
Arctic Arctic Ocean Fram Strait Greenland Nordic Seas Svalbard Yermak plateau Spitsbergen |
genre_facet |
Arctic Arctic Ocean Fram Strait Greenland Nordic Seas Svalbard Yermak plateau Spitsbergen |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.archives-ouvertes.fr/hal-00316683 Annales Geophysicae, European Geosciences Union, 2000, 18 (6), pp.687-705 |
op_relation |
hal-00316683 https://hal.archives-ouvertes.fr/hal-00316683 https://hal.archives-ouvertes.fr/hal-00316683/document https://hal.archives-ouvertes.fr/hal-00316683/file/angeo-18-687-2000.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766324604773597184 |