南海系西北太平洋边缘海之一,开展南海海底地质地貌的调查与研究,对发展海洋地质理论和开发海底矿产资源均具有重大意义.虽然前人已做过一些工作,但海底地貌的研究一直较为薄弱.本文根据三万多公里的回声测深记录、二千多公里的旁侧声纳图象、一千多公里的浅地层剖面资料和数千个沉积物样品的分析研究,对南海北部大陆架、大陆坡和深海盆地等地貌单元进行了划分,并对其成因与发育问题作了探讨(见图1)。 The South China Sea, one of the northwestern margin of the Pacific Ocean, is of great significance for the development of the marine geological theory and the exploration of the seafloor mineral resources. Although some work has been done before, the research on the seabed and the landform has been relatively Weakness.This paper based on more than thirty kilometers of echo sounding records, more than 2000 kilometers of side sonar images, more than 1000 kilometers of shallow stratum profiles and thousands of sediment samples of the analysis of the South China Sea, the northern shelf , The continental slope and the deep-sea basin and other geomorphic units were divided, and its causes and development problems were discussed (see Figure 1).