Morphology and Dynamic Sedimentology in front of the Retreating Tsengwen Delta, Southwestern Taiwan

Abstract

The Tsengwen Delta exhibits subsidence, erosion and retreat of shorelines. The once river-dominated irregularly protruded delta has evolved into a wave-dominated cuspate one with smooth gently curving shorelines. Subprofiler/sidescan sonar data, precision depth echo-sounding and 150 grab samples are integrated to reveal the bathymetry, bedforms, sediment distribution and their governing processes in front of the retreating Tsengwen Delta.

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