Abstract:

Many buried river channels were revealed by applying high-resolution geophysical detection methods in the area near Zhoushan Islands and Yangtze River estuary. The characteristic parameters of the buried channel profiles were counted and analyzed. Some characteristic parameters of hydrological environment of the profiles were figured out by using some river formulae. The river patterns of the study area were analyzed by the latest channel pattern discrimination in the last glacial maximum and deglaciation of the Late Pleistocene. The hydrology, sediment, environment parameters of the ancient channel in the study area, width-depth ratio F=22.22, suspended sediment concentration M=10.10%, channel curvature P=1.52, meander wavelength L=1 647 m. These parameters can be used as hydrological classification indicators.

Key words: Zhoushan Islands, Yangtze River estuary, buried ancient channel, ancient hydrological environment