南黄海海底地形趋势面分析

THE SURFACE TREND ANALYSIS OF SOUTH YELLOW SEA BOTTOM

应用趋势面分析,研究南黄海海底地形的区域变化趋势、局部变化特点及其控制因素。通过1～3次趋势面分析和一次偏差值的分布,反映了第四纪中期以来,南黄海有向东南方向掀斜沉降运动;晚更新世以来海侵海退的多次反复。黄海中部洼地区,已成为黄海与东海海水交换的主要通道。而老黄河—古长江携带的巨量泥沙以及水动力条件在此基础上的“雕刻”塑造,构成了现代南黄海的复杂海底地形。

This paper is based on the studies of toptgraphy of sea bottom from the bathymetric data, and the trend surface amalysis was used. The coastal zone and continental shelves of South Yellow Sea submerge and inclinate to the South-East diretion during Ouaternary since Pliocent Himalaya Emerge in west part, and form The South Yellow Sea topography. From late Pleistocene there are transgressions and degressions, and water confluence of East China Sea and Yellow Sea occurred in the center part. Ancient Yellow River and Yangtze River has discharged many sediments to the sea to form the complex topography of recent South Yellow Sea.