地质背景所研究的地区位于黄海的东南部,东面以朝鲜淹没的海岸为界(图1)。海底平缓地向西朝着中央洼地(水深小于100米)倾斜。该地区以季风和强湖差(大于4米)为特征,故而这里冬季会出现猛烈的风成波,且全年都有强潮流。作为朝鲜高地排水系的 The area under study is located in the southeastern part of the Yellow Sea, bordered by the submerged coast of North Korea on the east (Figure 1). The seabed slopes gently westward toward the central depression (less than 100 meters deep). The area is characterized by a monsoon and strong lake (> 4 meters), so there is a strong wind storm in winter and a strong trend throughout the year. As North Korea drainage system