High-resolution micro-topography movement in the Changjiang Estuary
Cheng He · Ocean Engineering · 2002
A succession of high resolution large scale bed form movements with very fine sand are significant in survey records during the last period of 1998 disastrous flood and the dry season in 1997. They are detected by Thermal Depth Recorder, Sonar Side Scan, Endeco Current Meter placed along two profiles, and Optical Suspended Concentration Meter, Acoustic Suspended Concentration Profiler and D.GPS at one fixed station in the Changjiang Estuary. These instruments can provide the practical data about the tremendous quantities of bedload transport, which is mainly the ambiguous long standing problem causing serious shallowing in docks and navigation channels, and especially important for the present construction of Deep Water Channel in the Changjiang Estuary.