Abstract
The Arctic Ocean is facing dramatic environmental and ecosystem changes. In this context, an international multiship survey project was undertaken in 2020 to obtain current baseline data. During the survey, unusually low dissolved oxygen and acidified water were found in a high-seas fishable area of the western (Pacific-side) Arctic Ocean. Herein, we show that the Beaufort Gyre shrinks to the east of an ocean ridge and forms a front between the water within the gyre and the water from the eastern (Atlantic-side) Arctic. That phenomenon triggers a frontal northward flow along the ocean ridge. This flow likely transports the low oxygen and acidified water toward the high-seas fishable area; similar biogeochemical properties had previously been observed only on the shelf-slope north of the East Siberian Sea.
© 2023. Springer Nature Limited.
Grants and funding
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JPMXD1420318865/Ministry of Education, Culture, Sports, Science and Technology (MEXT)
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JPMXD1420318865/Ministry of Education, Culture, Sports, Science and Technology (MEXT)
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JPMXD1420318865/Ministry of Education, Culture, Sports, Science and Technology (MEXT)
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JPMXD1420318865/Ministry of Education, Culture, Sports, Science and Technology (MEXT)
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JPMXD1420318865/Ministry of Education, Culture, Sports, Science and Technology (MEXT)
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JPMXD1420318865/Ministry of Education, Culture, Sports, Science and Technology (MEXT)
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JPMXD1420318865/Ministry of Education, Culture, Sports, Science and Technology (MEXT)
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JPMXD1420318865/Ministry of Education, Culture, Sports, Science and Technology (MEXT)
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KOPRI1525011760/Ministry of Oceans and Fisheries (MOF)
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KOPRI1525011760/Ministry of Oceans and Fisheries (MOF)
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KOPRI1525011760/Ministry of Oceans and Fisheries (MOF)
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KOPRI1525011760/Ministry of Oceans and Fisheries (MOF)