| 摘 要： | 1 IntroductionSince 1980 s the obserVations of suspended sedimellts based on acoustical back-scatteringhave been applied to the studies of sediment dynamics in the estuary and coastal area and tothe monitoring of the marine pollutant and plankton1--lol. Compared with the clajssical watersampling and the optical obserwtions, the acoustical ObserVation can continuously observe thein-site sediment concentration profilers along the water depth and their variation with timewithout disturbing the …
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