SEDIMENT TRANSPORT IN THE SANRIMATSUBARA COAST

Abstract

  In situ measurements on longshore sediment transport and sediment budget analysis were performed in the Sanrimatsubara Coast located in the northern part of Fukuoka Prefecture, Japan. In this study, colored fluorescent sands were used as a tracer to estimate sediment transport. Spatial-temporal distributions of tracers contained in sands sampled were investigated. Series of in situ measurements using large amounts of colored fluorescent sands were tested twice in winter and once in summer. Wave data in test periods at Genkainada located in the northwest part of the coast were analyzed to discuss impacts on the sediment transport. In addition, the long term sediment budget in the coast from 1961 to 2008 using available aerial photographs was examined. As a result of this study, it is made clear that eastward longshore sediment transport is dominant in the Sanrimatsubara Coast as a whole.