Abstract
A modified cylindrical sediment trap, which was based on a bamboo sampler designed during 1960s to 1980s, for measurements of suspended sediment had been evaluated from experiments in a circulating water channel. Trapping rates of suspended sediment into the trap were quantified using grass particles with several size of a sediment intake and drain hole, and drain mesh aperture in uniform flow.
Two neashore measurements were conducted to examine practicability of the trap. In Amitori bay, Iriomote Island, the traps were installed at two site in the bay to measure movements of silty sediments in coral reef. In an estuarine tidal flat, Rokujo-gata, a field measurement of sediment transport was conducted by using of the sediment traps to investigate bathymetric stability and sediment dynamics in a winter season.
