三陸沿岸海域における水系の分布とその変動

DOI PDF Web Site Web Site 被引用文献77件

書誌事項

タイトル別名
  • Variation of water system distribution in the Sanriku Coastal Area.

抄録

We analyzed hydrographic data obtained monthly by the Iwate Prefectural Fisheries Laboratory during 1977-1981. Our attention was focussed on the classification of waters based on the Temperature-Salinity (T-S) scatter diagram analyses, and on the extraction of the “mean state” of their distribution for each season. The “water system” was defined as “all waters occupying some specific region on the T-S plane”, and the mean state for each season was expressed by the distribution of the “mode water systems” (i.e., the most commonly occuring water system).<BR>Because of the coexistence of the Tsugaru Warm Current, the Oyashio and the Kuroshio, and their large seasonal variability, the sea waters had a wide variety of T-S combinations. The detailed T-S scatter diagram analyses allowed us to classify the waters into six water systems. A time-longitude diagram of water systems and the distribution of mode water systems are presented. The latter showed clear seasonal variations of the Tsugaru Warm Current and the Oyashio.<BR>Though the water system analysis was successfully able to present the distribution of the various waters in the Sanriku Coastal Area and to clearly extract the mean state of sea conditions, it was found that the classification of water systems on the T-S plane was not complete in all cases for this area.

収録刊行物

被引用文献 (77)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ