Seasonal variations in ocean structure and current in Ongul Strait, Antarctica, in 1991

元データ 国立極地研究所

概要

Ocean structure and current were observed below fast ice in Ongul Strait, Antarctica, over a nearly full annual cycle in 1991. In the austral fall, fresh, cold and oxygen-rich water accumulates in the upper layer. This water is diffused or mixed with the lower-layer water gradually in winter. From spring to summer, warm, saline and oxygen-poor water appeared in the mid-depth and deep layers. These features seem to be common in every year. Horizontal oceanic advection is dominant in the heat and salt budget. In spite of no direct wind forcing and negligible thermohaline forcing, the current in Ongul Strait is found to be strong, with a typical velocity being 0.3m/s. The strong current is confined only to the upper 100-300m from the surface. The direction of the mean current changes drastically from southward to northward in May.

著者

Kawaguchi Sadao Nagaoka National College Of Technology
Ushio Shuki National Institute Of Polar Research
Shimohara Kimiko Kitami Institute of Technology
ONO Nobuo National Institute of Polar Research
KAWAGUCHI Sadao National Institute of Polar Research
Ohshima Kay The Institute of Low Temperature Science, Hokkaido University
Kawamura Toshiyuki The Institute of Low Temperature Science, Hokkaido University
Takizawa Takatoshi Japan Marine Science and Technology Center
KAWAMURA Toshiyuki Institute of Low Temperature Science, Hokkaido University
OHSHIMA Kay Institute of Low Temperature Science, Hokkaido University
Kawamura Toshiyuki Institute Of Low Temperature Science Hokkaido University
Kawaguchi Sadao Fac. Of Agr. Kyushu Univ.
Ohshima K Hokkaido Univ. Sapporo Jpn
Ohshima Kay The Institute Of Low Temperature Science Hokkaido University
Ohshima Kay Hokkaido Univ. Sapporo Jpn
Ohshima Kay Institute Of Low Temperature Science Hokkaido University
Satow Kazuhide Nagoya Technical College
Ono N National Institute Of Polar Research
Kawaguchi S Kyushu Univ.
Shinbori K Hokkaido Univ. Sapporo
Koga S National Inst. Resources And Environment Tsukuba
Kawamura Toshiyuki The Institute Of Low Temperature Science Hokkaido University
Ushio S National Institute Of Polar Research

関連論文

▼もっと見る