Author(s): Masato Nakata; Makoto Ifuku; Takashi Teruya
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Abstract: In this study, flow and topographical changes around the Hiji River mouth bar are determined by measurements with an ADP (Acoustic Doppler Profiler). On the offshore side of river-mouth bar, clockwise circulation is significant and the rivermouth bar advances toward the offshore. The growth rate of the river-mouth bar is controlled by the sandy shoal which is formed at the terrace. After the extraction of sediment at the offshore side of the river-mouth bar, the change of the sediment volume becomes approximately constant. Judging from this result, it is proposed that the sediment budget around the river-mouth bar is related to the extraction of sediment.
Year: 2009