麗水沿岸의 氣象要因이 定置網漁場의 海況에 미치는 影響

Relation between the meterological factors and fluctuation of sea condition of set net fishing ground in the coastal water of Yosu

In order to investigate the relation between the meterological factors and the fluctuation of sea condition of set net fishing grounds located in the coastal waters of yosu, meterological data of Yosu were investigated from Yosu meterological station, and the oceanographic observation was carried out at fishing ground in 1990. The results obtained can be summarized as follows: 1. For Yosu bay was a coastal shallow water, the fishing grounds was influenced largely by atmospheric phenomena such as air temperature and precipitation, etc. The inner water was influenced by air temperature after about 15days and offshore water was influenced by air temperature after about 30days. 2. In the monthly variation of water temperature and air temperature in the vicinity of fishing ground, air temperature was lower than water temperature in Winter and air temperature was higher than water temperature in Spring and Summer. The maximum water temperature and air temperature was made on August, and minimum water temperature and air temperature was made on February. The reversing time of water temperature and air temperature took place on March and September. The difference of water temperature and air temperature of Yosu was biger than Sorido and Yokchido. 3. The monthly mean precipitation in the district of Yosu showed difference among the months. Its maximum was made in Summer and its minimum was made in Winter. Also high salinity appeared in Winter and low salinity appeared in Summer. Owing to the inflow of land water from the river of Somjin, inner water changed into low salinity immediately and offshore water changed into low salinity after 1 months.