序言在大陆架上呈线状延伸的砂体的成因是一个有待解决的问题。已经提出了有关其成因的若干解释:与波浪作用相结合的地球自转所引起的风暴流说,砂体的残留砂堤成因说,和潮汐环流说。出现多种解释的原因,部分是受不同的采样地区所支配。风暴型和波浪型砂体和残留砂堤的特征,似乎是比较狭窄的大陆架, Preface The origin of sand bodies that extend linearly on the continental shelf is a problem to be solved. Several explanations have been put forward about its causes: the storm flow caused by the rotation of the earth combined with the wave action, the reason for the formation of residual sands in sand bodies, and the tidal circulation. A number of explanations are due in part to the different sampling regions. The characteristics of storm-type and wavy sand bodies and residual sandbanks appear to be relatively narrow continental shelves,