Observations of water masses and circulation with focus on the Eurasian Basin of the Arctic Ocean from the 1990s to the late 2000s
The circulation and water mass properties in the Eurasian Basin are discussed based on a review of previous research and an examination of observations made in recent years within, or parallel to, DAMOCLES (Developing Arctic Modeling and Observational Capabilities for Long-term Environmental Studies...
Published in: | Ocean Science |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2013
|
Subjects: | |
Online Access: | https://doi.org/10.5194/os-9-147-2013 https://doaj.org/article/3500df684a2c40fe86d025de8862a2c3 |
id |
ftdoajarticles:oai:doaj.org/article:3500df684a2c40fe86d025de8862a2c3 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:3500df684a2c40fe86d025de8862a2c3 2023-05-15T13:22:43+02:00 Observations of water masses and circulation with focus on the Eurasian Basin of the Arctic Ocean from the 1990s to the late 2000s B. Rudels U. Schauer G. Björk M. Korhonen S. Pisarev B. Rabe A. Wisotzki 2013-02-01T00:00:00Z https://doi.org/10.5194/os-9-147-2013 https://doaj.org/article/3500df684a2c40fe86d025de8862a2c3 EN eng Copernicus Publications http://www.ocean-sci.net/9/147/2013/os-9-147-2013.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-9-147-2013 1812-0784 1812-0792 https://doaj.org/article/3500df684a2c40fe86d025de8862a2c3 Ocean Science, Vol 9, Iss 1, Pp 147-169 (2013) Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2013 ftdoajarticles https://doi.org/10.5194/os-9-147-2013 2022-12-31T12:25:19Z The circulation and water mass properties in the Eurasian Basin are discussed based on a review of previous research and an examination of observations made in recent years within, or parallel to, DAMOCLES (Developing Arctic Modeling and Observational Capabilities for Long-term Environmental Studies). The discussion is strongly biased towards observations made from icebreakers and particularly from the cruise with R/V Polarstern 2007 during the International Polar Year (IPY). Focus is on the Barents Sea inflow branch and its mixing with the Fram Strait inflow branch. It is proposed that the Barents Sea branch contributes not just intermediate water but also most of the water to the Atlantic layer in the Amundsen Basin and also in the Makarov and Canada basins. Only occasionally would high temperature pulses originating from the Fram Strait branch penetrate along the Laptev Sea slope across the Gakkel Ridge into the Amundsen Basin. Interactions between the Barents Sea and the Fram Strait branches lead to formation of intrusive layers, in the Atlantic layer and in the intermediate waters. The intrusion characteristics found downstream, north of the Laptev Sea are similar to those observed in the northern Nansen Basin and over the Gakkel Ridge, suggesting a flow from the Laptev Sea towards Fram Strait. The formation mechanisms for the intrusions at the continental slope, or in the interior of the basins if they are reformed there, have not been identified. The temperature of the deep water of the Eurasian Basin has increased in the last 10 yr rather more than expected from geothermal heating. That geothermal heating does influence the deep water column was obvious from 2007 Polarstern observations made close to a hydrothermal vent in the Gakkel Ridge, where the temperature minimum usually found above the 600–800 m thick homogenous bottom layer was absent. However, heat entrained from the Atlantic water into descending, saline boundary plumes may also contribute to the warming of the deeper layers. Article in Journal/Newspaper amundsen basin Arctic Arctic Ocean Barents Sea Fram Strait International Polar Year IPY laptev Laptev Sea Nansen Basin Directory of Open Access Journals: DOAJ Articles Amundsen Basin ENVELOPE(74.000,74.000,87.000,87.000) Arctic Arctic Ocean Barents Sea Canada Damocles ENVELOPE(-69.350,-69.350,-69.650,-69.650) Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Laptev Sea Ocean Science 9 1 147 169 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
spellingShingle |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 B. Rudels U. Schauer G. Björk M. Korhonen S. Pisarev B. Rabe A. Wisotzki Observations of water masses and circulation with focus on the Eurasian Basin of the Arctic Ocean from the 1990s to the late 2000s |
topic_facet |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
description |
The circulation and water mass properties in the Eurasian Basin are discussed based on a review of previous research and an examination of observations made in recent years within, or parallel to, DAMOCLES (Developing Arctic Modeling and Observational Capabilities for Long-term Environmental Studies). The discussion is strongly biased towards observations made from icebreakers and particularly from the cruise with R/V Polarstern 2007 during the International Polar Year (IPY). Focus is on the Barents Sea inflow branch and its mixing with the Fram Strait inflow branch. It is proposed that the Barents Sea branch contributes not just intermediate water but also most of the water to the Atlantic layer in the Amundsen Basin and also in the Makarov and Canada basins. Only occasionally would high temperature pulses originating from the Fram Strait branch penetrate along the Laptev Sea slope across the Gakkel Ridge into the Amundsen Basin. Interactions between the Barents Sea and the Fram Strait branches lead to formation of intrusive layers, in the Atlantic layer and in the intermediate waters. The intrusion characteristics found downstream, north of the Laptev Sea are similar to those observed in the northern Nansen Basin and over the Gakkel Ridge, suggesting a flow from the Laptev Sea towards Fram Strait. The formation mechanisms for the intrusions at the continental slope, or in the interior of the basins if they are reformed there, have not been identified. The temperature of the deep water of the Eurasian Basin has increased in the last 10 yr rather more than expected from geothermal heating. That geothermal heating does influence the deep water column was obvious from 2007 Polarstern observations made close to a hydrothermal vent in the Gakkel Ridge, where the temperature minimum usually found above the 600–800 m thick homogenous bottom layer was absent. However, heat entrained from the Atlantic water into descending, saline boundary plumes may also contribute to the warming of the deeper layers. |
format |
Article in Journal/Newspaper |
author |
B. Rudels U. Schauer G. Björk M. Korhonen S. Pisarev B. Rabe A. Wisotzki |
author_facet |
B. Rudels U. Schauer G. Björk M. Korhonen S. Pisarev B. Rabe A. Wisotzki |
author_sort |
B. Rudels |
title |
Observations of water masses and circulation with focus on the Eurasian Basin of the Arctic Ocean from the 1990s to the late 2000s |
title_short |
Observations of water masses and circulation with focus on the Eurasian Basin of the Arctic Ocean from the 1990s to the late 2000s |
title_full |
Observations of water masses and circulation with focus on the Eurasian Basin of the Arctic Ocean from the 1990s to the late 2000s |
title_fullStr |
Observations of water masses and circulation with focus on the Eurasian Basin of the Arctic Ocean from the 1990s to the late 2000s |
title_full_unstemmed |
Observations of water masses and circulation with focus on the Eurasian Basin of the Arctic Ocean from the 1990s to the late 2000s |
title_sort |
observations of water masses and circulation with focus on the eurasian basin of the arctic ocean from the 1990s to the late 2000s |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/os-9-147-2013 https://doaj.org/article/3500df684a2c40fe86d025de8862a2c3 |
long_lat |
ENVELOPE(74.000,74.000,87.000,87.000) ENVELOPE(-69.350,-69.350,-69.650,-69.650) ENVELOPE(90.000,90.000,87.000,87.000) |
geographic |
Amundsen Basin Arctic Arctic Ocean Barents Sea Canada Damocles Gakkel Ridge Laptev Sea |
geographic_facet |
Amundsen Basin Arctic Arctic Ocean Barents Sea Canada Damocles Gakkel Ridge Laptev Sea |
genre |
amundsen basin Arctic Arctic Ocean Barents Sea Fram Strait International Polar Year IPY laptev Laptev Sea Nansen Basin |
genre_facet |
amundsen basin Arctic Arctic Ocean Barents Sea Fram Strait International Polar Year IPY laptev Laptev Sea Nansen Basin |
op_source |
Ocean Science, Vol 9, Iss 1, Pp 147-169 (2013) |
op_relation |
http://www.ocean-sci.net/9/147/2013/os-9-147-2013.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-9-147-2013 1812-0784 1812-0792 https://doaj.org/article/3500df684a2c40fe86d025de8862a2c3 |
op_doi |
https://doi.org/10.5194/os-9-147-2013 |
container_title |
Ocean Science |
container_volume |
9 |
container_issue |
1 |
container_start_page |
147 |
op_container_end_page |
169 |
_version_ |
1766366484521549824 |