近、现代黄河三角洲地貌形态反演

Geomorphologic Shape Inversion of the Neoteric and Modern Yellow River Delta

1855年黄河改夺大清河河道后于山东利津县东北入海。至今黄河尾闾河道历经10次大的改道变迁,塑造了近、现代黄河三角洲,形成了7个主要的亚三角洲堆积体。该文利用黄河尾闾河道改道资料,近、现代黄河河口流路变迁图,近、现代黄河三角洲体系图以及1985—1986年的水文工程地质钻孔资料,在研究黄河三角洲沉积模式的基础上,对工程地质钻孔数据进行沉积层序分析,将今论古,反推近、现代黄河三角洲沉积地貌,研究结果近似展示了近、现代黄河三角洲二维平面的发育演变和其时其地的地貌形态。

In 1855, Yellow River changed its routine and went into Bohai sea at the northeast of Lijin County, Shandong Province through the Daqinghe River. Yellow River has changed its routine about ten times so far, and built neoteric and modern Yellow River Delta, which is made of seven sub-delta deposits. On the basis of analysis of deposit sequence of engineering drill data, integrating with the changes of the routes of the neoteric and modern Yellow River Delta and six coastlines, the ground elevation of engineering drill can be calculated. Using software ARC/INFO and ERDAS, three-dimension relief maps in 1855, 1937, 1954, 1964,1977 and 1991 are produced. The results reflect the two-dimension evolutions and relief forms of the Yellow River Delta basically.