东海陆架区的温、盐度逆转现象(Ⅰ)

本文根据国家海洋局1975—1979年标准断面调查资料,对东海陆架区出现的温、盐度逆转现象进行定义和划分;通过统计分析得出,在东海陆架区出现两个逆转现象高频海区,一个位于江苏、浙江近海和外海的一狭长海域内,另一个位于济州岛以南和以西海域。通过对逆转现象成因的讨论认为,前者高频区主要是由于几个不同水团的叠置、交汇、相互作用的结果;由于气旋型涡旋的存在和黄海暖流水附近冷水块的出现而伴生的海水上升运动是导致后者高频区的因素。

INVERSION PHENOMENON OF TEMPERATURE AND SALINITY IN THE CONTINENTAL SHELF REGION OF EAST CHINA SEA

On the basis of survey data for the standard sections obtained by the State Oceanic Administration in the period from 1975 to 1979, the inversion phenomena of temperature and salinity occurred in the continental shelf region of East China Sea have been defined and classified. It can be shown by statistical analysis that there exist two sea areas of frequent occurrence for the above-mentioned inversion phenomena, one of which is situated in the long and narrow sea area from the offshore to the outshore off provinces of Jiangsu and Zhejiang; the other is situated in the sea area south and west off Jizhou Island. It terms of discussion on causes of generating such inversion phenomena, we consider that in the former case, it is the direct result of interaction of both superimposition and influx for different water masses, and in the latter case, it results from the upwelling movement of sea water accompanied owing a cyclonic eddy existing and a cold water body taking place near the Yellow Sea Warm Current Water.