Abstract

During 1973, sand waves were detected by echo sounding in several areas of the shallow shelf northwest and west of Taiwan. They occur in fields 5 to 30 km in width, at water depths ranging from 20 to 90 m. The height of the sand waves primarily ranges from 5 to 8 m, and their average length ranges from about 100 to 500 m. The asymmetrical shape of most of the waves suggests that they migrate in response to present-day hydraulic conditions. Orientation of the steepest faces of the sand waves is quite variable, indicating that the pattern of bottom current movement in Taiwan Strait is probably quite complex.

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