論文

査読有り
2022年12月

Deep water pathways in the North Pacific Ocean revealed by Lagrangian particle tracking

Scientific Reports
  • T. Kawasaki
  • ,
  • Y. Matsumura
  • ,
  • H. Hasumi

12
1
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1038/s41598-022-10080-8
出版者・発行元
Springer Science and Business Media LLC

Abstract

Lagrangian particle tracking experiments are conducted to investigate the pathways of deep water in the North Pacific Ocean. The flow field is taken from a state-of-the-art deep circulation simulation. An unprecedented number of particles are tracked to quantify the volume transport and residence time. Half of the North Pacific deep water returns to the Southern Ocean, and its principal pathway is along the western boundary current in the Southwest Pacific Basin in the deep layer. About 30% is exported to the Indian Ocean after upwelling to the shallow layer in the western North Pacific Ocean. The rest is transported to the Arctic Ocean through the Bering Strait or evaporates within the Pacific Ocean. Upwelling of deep water is confined in the western North Pacific Ocean owing to the strong vertical mixing. The mean residence time of deep water in the North Pacific Ocean is estimated to be several hundred years, which is consistent with the observed radiocarbon distribution.

リンク情報
DOI
https://doi.org/10.1038/s41598-022-10080-8
URL
https://www.nature.com/articles/s41598-022-10080-8.pdf
URL
https://www.nature.com/articles/s41598-022-10080-8
ID情報
  • DOI : 10.1038/s41598-022-10080-8
  • eISSN : 2045-2322

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