海洋科学2001，Vol.25Issue(5)：50-54,5.
黄河三角洲北部潮间带沉积物的粒度特征
GRAIN SIZE CHARACTERISTICS OF TIDALFLAT SEDI MENTS, NORTHERN YELLOW RIVER DELTA
摘要
Abstract
In the present contribution, we report the coastal profile characteristics of two transections in the northern Yellow River Delta (i.e. the Yellow River mouth area from 1964 to 1976). Leveling along the profiles and sampling in 100m intervals were carried out along the profiles. Profile P1 is 1 175 m in length (13 surficial sediment samples were collected) and Profile P2 is 2 250m in length (23 samples collected). We analyzed these samples with a Cilas 940 L particle size analyzer and computed the grain size parameters. The result shows that along P1, from the mean high water level to the lower parts, the sediment becomes finer and more poorly-sorted, indicating an effect of wave action.However, along P2,from the high water downward, the sediment becomes coarser and better-sorted, indicating a tidally dominated environment.Furthermore, wave-induced low cliffs are formed, where abrupt changes in grain size occur, and accumulation of shell debris is present near the high water on P1. These analyses demontethat wave action is becoming active after the Yellow River mouth shifted to southward and wave-induced erosion has begun to alter the tidalflat morphology.关键词
潮滩沉积/粒度参数/滩面高程/黄河三角洲分类
海洋科学引用本文复制引用
薛允传,尹延鸿,高抒..黄河三角洲北部潮间带沉积物的粒度特征[J].海洋科学,2001,25(5):50-54,5.基金项目
国家杰出青年基金资助项目49725612号和山东省自然科学基金资助项目Y98E04075号。 （）
