黒潮変動について

DOI Web Site 被引用文献2件

書誌事項

タイトル別名
  • On the Variation of the Kuroshio
  • クロシオ ヘンドウ ニ ツイテ
公開日
1972
DOI
  • 10.5026/jgeography.81.2_81
公開者
公益社団法人 東京地学協会

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説明

The review on the variation of the Kuroshio extending from several hours to ten years is described here. We have had no clear understandings on the mechanisms of occurrence of large and comparatively stable meander off Kisyu-Ensyu Nada. It is known, at present, that the selected several small meanders in spring off the east coast of Kyusyu progress towards east along the south coasts of Shikoku and Kii Peninsular and stop its advance off Ensyu Nada and become large. This large meander is always accompanied, inside of it, with the ascending cold intermediate water in the Pacific. We cannot fully understand the mechanisms of occurrence and continuation of this large meander without knowledges of the deep and bottom current based on the direct measurement and the long-term variation in the atmosphere over the Pacific especially subtropical western Pacific.<BR>There exist middle and small scale meanders which progress easterly almost every time except the period of large stable meander off Kisyu-Ensyu Nada. The Kuroshio which flows along the south coast of Japan might exist in the duration only about 1/4-1/6 of total period after the World War II. Therefore the paths of large scale meander off Kisyu-Ensyu Nada and Middle and small scale meanders traveling easterly must not be considered abnormal. The very short-period fluctuations, one or half a day, of the velocity and direction of the Kuroshio were observed only by several systematic programmes with several vessels in Japan. From these simultaneous observations, comparatively large variations of velocity of the Kuroshio which may mask the amplitude of long-period variation of the Kuroshio were found. The observations of detailed pattern and direction of propagation of disturbed wave will be necessary to get the causes of these variations.

収録刊行物

  • 地学雑誌

    地学雑誌 81 (2), 81-94, 1972

    公益社団法人 東京地学協会

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