黄河下游河道变迁及新构造运动作用的初步分析

黄河以其高含沙量、善淤、善决、善徙闻名于世。历史时期，黄河下游河道曾多次变迁。综观其河道迁徙，北宋前多在现行黄河以北，向东北流入渤海；南宋至清末，改行今河道以南，向东南经淮河注入黄海；清末至今，复向东北入渤海，河道多呈西南—东北向、西北—东南向或西—东向，与区域内新构造运动断裂线方向相一致

Initial Analysis on Evolution and Neotectonic Movement of River Course of the Lower Huanghe River

The Huanghe River is world famous for its hyper sediment concentration and apt to siltation, breach and river course evolution. In history, the course of the lower Huanghe River changed many times. Before the North Song Dynasty, it was mainly located in the north and northeast of the present river course, emptying into the Bohai Sea; from the South Song Dynasty to the end of the Qing Dynasty, it was located in the south of the present one, emptying into the Huang Sea via the Huaihe River; and from the end of the Qing Dynasty up to now, it was back to the northeast. The courses were in the direction of southwest northeast,northwest southeast or east west. They are in accordance with the active fracture lines formed by new tectonic movement.