A fisheries study on the sectional circulation in the East China Sea

Zheng Jianyuan

doi:10.1007/BF02842610

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A fisheries study on the sectional circulation in the East China Sea

Updated：2023-05-16

- A fisheries study on the sectional circulation in the East China Sea
- Journal of Oceanology and Limnology Vol. 7, Issue 3, Pages: 196-210(1989)
- Affiliations：
  
  East China Sea Fisheries Research Institute
- Author bio：
- Funds：
- DOI：10.1007/BF02842610
  CLC：
- Published：1989
- Accepted：
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Jianyuan, Z. A fisheries study on the sectional circulation in the East China Sea., Chin. J. Ocean. Limnol. 7, 196–210 (1989). https://doi.org/10.1007/BF02842610
DOI：

Jianyuan, Z. A fisheries study on the sectional circulation in the East China Sea., Chin. J. Ocean. Limnol. 7, 196–210 (1989). https://doi.org/10.1007/BF02842610 DOI：

摘要

Abstract

Surveys since 1959 showed that the dynamic basis of the East China Sea sectional circulation is the nearshore seawater horizontal divergence caused by wind on the surface compensated by Kuroshio subsurface water convergence caused by meridional current in the lower layer. Fish always tend to migrate along certain routes or stay in certain areas favorable for development of eggs

survival of larvae and living of adults. The movement of water masses supplies a very important driving force for marine animals migrating long distance. The lower part of the sectional circulation formed by the subsurface water of Kuroshio is not suitable for the aggregation of fish because of its lack of oxygen

and has therefore a driving influence on demersal fishes. This study of the sectional circulation influence on the distributions of some commercially important species in the East China Sea reveals a close relationship between the circulation and the movement of fish schools. The principal factors influencing zonal vertical circulation are the meridional vector of the Kuroshio lower layer and atmospheric circulation

referning here mainly to the subtropical high pressure in the Asia-Pacific area that causes surface divergence and lifts subsurface water from the bottom to the surface at the nearshore area. Some simple methods for estimating the intensity of the sectional circulation are

introduced for fishery forecasts and operations.

关键词

Keywords

references

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