Low salinity area in the bottom layer of Jiaozhou Bay mouth

Abstract

Based on the investigation data of Jiaozhou Bay in May and October of 1979, the content and distribution of salinity in bottom layer in Jiaozhou Bay were studied. The results showed that in May and October, the variation range of salinity in Jiaozhou Bay water was 31.09-31.55 %o, and the salinity of sea water was over 31.09 %o. This showed that in the aspect of salinity change, in May and October, in the whole bottom layer of Jiaozhou Bay, the salinity of water body was relatively high. In May, in the bottom, the variation range of salinity in Jiaozhou Bay was 31.49-31.55 %o, and the salinity of sea water was relatively high. There was a low salinity area in the bottom of Jiaozhou Bay mouth. In the inner and outer waters of the bay mouth, the salinity was higher. The results showed that the salinity in Jiaozhou Bay was high and the salinity of the water outside the bay was high. In October, in the bottom layer, the variation range of salinity in Jiaozhou Bay was 31.09-31.21 %o, and the salinity of sea water was relatively low. There was a low salinity area in the bottom water outside the mouth of Jiaozhou Bay. Compared with the bay mouth and the water inside the bay mouth, the salinity of the water outside the bay mouth was relatively low, and the interval length of salinity change was 0.12 %o, and the salinity change from the outside of the bay mouth to the inside of the bay mouth was relatively small. In May, a low salinity area appeared in the bottom of Jiaozhou Bay mouth. In the inner and outer waters, the salinity was higher. In October, a series of decreasing parallel lines with different gradients were formed from the bottom high salinity water area in the inner side of the bay mouth to the bottom low salinity water area in the outerside of the bay mouth.