Ocean observation results along 130° E line south of Japan ― Observational report during Koyo-maru 77th cruise ―

IR IR JASI Web Site Open Access

Bibliographic Information

Other Title
  • 日本南方東経130度線における海洋観測結果 耕洋丸第77次航海報告
  • ニホン ナンポウ トウケイ 130ドセン ニオケル カイヨウ カンソク ケッカ : コウヨウマル ダイ77ジ コウカイ ホウコク

Search this article

Description

Ocean observations were conducted along 130°E on the way to Koror (Republic of Palau) during Koyo-maru 77th cruise on October 2018. During the cruise, the North Equatorial Current (NEC) was observed with geostrophic volume transport exceeding 70 Sv (lSv= 106m3/s) above 1000 dbar between 8°N and 24°N. In particular, it was strong north of 18°N. We found that surface (>25℃)/ low salinity (<34.5PSU) water existed not only at southern part but also at northern part of the 130°E line. Because we could not find cloud cluster associated with the Intertropical Convergence Zone around the northern part of 130°E, it is suggested that the surface high-temperature/ low-salinity water was advected by the NEC. Thus, we suggest that change of the NEC should be monitored and discussed because the boundary of this low-salinity water is thought to be the landmark of the spa wing ground of Japanese eel in the NEC region.

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top