Stratification in the northern Bering Sea in early summer of 2017 and 2018
We investigated spatial and interannual variation in the physical environment in the northern Bering Sea focusing on stratification, which is one factor affecting biological production in Arctic/subarctic regions. In particular, we analyzed in situ data obtained onboard the training ship Oshoro Maru...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
|
Subjects: | |
Online Access: | http://hdl.handle.net/2115/87791 https://doi.org/10.1016/j.dsr2.2020.104820 |
id |
fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/87791 |
---|---|
record_format |
openpolar |
spelling |
fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/87791 2023-05-15T15:07:41+02:00 Stratification in the northern Bering Sea in early summer of 2017 and 2018 Ueno, Hiromichi Komatsu, Mizuki Ji, Zhaoqianyi Dobashi, Ryo Muramatsu, Miaki Abe, Hiroto Imai, Keiri Ooki, Atushi Hirawake, Toru http://hdl.handle.net/2115/87791 https://doi.org/10.1016/j.dsr2.2020.104820 eng eng Elsevier http://hdl.handle.net/2115/87791 Deep Sea Research Part II Topical Studies in Oceanography, 181-182: 104820 http://dx.doi.org/10.1016/j.dsr2.2020.104820 © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND Northern Bering Sea Stratification Interannual variation In situ data 450 article (author version) fthokunivhus https://doi.org/10.1016/j.dsr2.2020.104820 2023-02-03T01:02:35Z We investigated spatial and interannual variation in the physical environment in the northern Bering Sea focusing on stratification, which is one factor affecting biological production in Arctic/subarctic regions. In particular, we analyzed in situ data obtained onboard the training ship Oshoro Maru in early summer in 2017 and 2018. We found that stratification in the areas just north of St. Lawrence Island (around 64.5 degrees N and west of 168.5 degrees W) and south/southwest of St. Lawrence Island was significantly weaker in 2018 than in 2017. These results are consistent with the extremely low sea-ice extent present in the winter of 2017/2018, which would have resulted in less freshwater being supplied to the surface layers and a warmer and less saline bottom water. Conversely, stratification was as strong in 2018 as in 2017 in the area close to the Alaska mainland, including the Bering Strait area, suggesting that the Alaskan Coastal Water dominates stratification in this area in early summer. Moreover, we found that the weakly stratified water column in the Bering Strait area stratified quickly shortly after the occurrence of strong northerly winds, likely because of the Ekman transport of warm and low-salinity Alaskan Coastal Water from the east. Article in Journal/Newspaper Arctic Bering Sea Bering Strait Sea ice St Lawrence Island Subarctic Alaska Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Arctic Bering Sea Bering Strait Lawrence Island ENVELOPE(-103.718,-103.718,56.967,56.967) Deep Sea Research Part II: Topical Studies in Oceanography 181-182 104820 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Northern Bering Sea Stratification Interannual variation In situ data 450 |
spellingShingle |
Northern Bering Sea Stratification Interannual variation In situ data 450 Ueno, Hiromichi Komatsu, Mizuki Ji, Zhaoqianyi Dobashi, Ryo Muramatsu, Miaki Abe, Hiroto Imai, Keiri Ooki, Atushi Hirawake, Toru Stratification in the northern Bering Sea in early summer of 2017 and 2018 |
topic_facet |
Northern Bering Sea Stratification Interannual variation In situ data 450 |
description |
We investigated spatial and interannual variation in the physical environment in the northern Bering Sea focusing on stratification, which is one factor affecting biological production in Arctic/subarctic regions. In particular, we analyzed in situ data obtained onboard the training ship Oshoro Maru in early summer in 2017 and 2018. We found that stratification in the areas just north of St. Lawrence Island (around 64.5 degrees N and west of 168.5 degrees W) and south/southwest of St. Lawrence Island was significantly weaker in 2018 than in 2017. These results are consistent with the extremely low sea-ice extent present in the winter of 2017/2018, which would have resulted in less freshwater being supplied to the surface layers and a warmer and less saline bottom water. Conversely, stratification was as strong in 2018 as in 2017 in the area close to the Alaska mainland, including the Bering Strait area, suggesting that the Alaskan Coastal Water dominates stratification in this area in early summer. Moreover, we found that the weakly stratified water column in the Bering Strait area stratified quickly shortly after the occurrence of strong northerly winds, likely because of the Ekman transport of warm and low-salinity Alaskan Coastal Water from the east. |
format |
Article in Journal/Newspaper |
author |
Ueno, Hiromichi Komatsu, Mizuki Ji, Zhaoqianyi Dobashi, Ryo Muramatsu, Miaki Abe, Hiroto Imai, Keiri Ooki, Atushi Hirawake, Toru |
author_facet |
Ueno, Hiromichi Komatsu, Mizuki Ji, Zhaoqianyi Dobashi, Ryo Muramatsu, Miaki Abe, Hiroto Imai, Keiri Ooki, Atushi Hirawake, Toru |
author_sort |
Ueno, Hiromichi |
title |
Stratification in the northern Bering Sea in early summer of 2017 and 2018 |
title_short |
Stratification in the northern Bering Sea in early summer of 2017 and 2018 |
title_full |
Stratification in the northern Bering Sea in early summer of 2017 and 2018 |
title_fullStr |
Stratification in the northern Bering Sea in early summer of 2017 and 2018 |
title_full_unstemmed |
Stratification in the northern Bering Sea in early summer of 2017 and 2018 |
title_sort |
stratification in the northern bering sea in early summer of 2017 and 2018 |
publisher |
Elsevier |
url |
http://hdl.handle.net/2115/87791 https://doi.org/10.1016/j.dsr2.2020.104820 |
long_lat |
ENVELOPE(-103.718,-103.718,56.967,56.967) |
geographic |
Arctic Bering Sea Bering Strait Lawrence Island |
geographic_facet |
Arctic Bering Sea Bering Strait Lawrence Island |
genre |
Arctic Bering Sea Bering Strait Sea ice St Lawrence Island Subarctic Alaska |
genre_facet |
Arctic Bering Sea Bering Strait Sea ice St Lawrence Island Subarctic Alaska |
op_relation |
http://hdl.handle.net/2115/87791 Deep Sea Research Part II Topical Studies in Oceanography, 181-182: 104820 http://dx.doi.org/10.1016/j.dsr2.2020.104820 |
op_rights |
© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.dsr2.2020.104820 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
181-182 |
container_start_page |
104820 |
_version_ |
1766339138339995648 |