Abstract

Suspended sediment concentration and current velocity were measured continuously by Acoustic Doppler Current Profiler at the inner part of the Ariake Sound. Simultaneously, shear strength of the surface of the bottom mud was measured around the mooring point. Shear strength which measured by viscosity meter had finer relationships between vane shear strength. Multiple regression analysis was applied to the maximum SS concentration in every 15 hours. The main factor of the variation of the SS was the bottom shear stress. Sub-factor of the variation of SS concentration were wind velocity and the shear strength of the surface bottom mud.

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