PREDICTION OF BEACH EROSION CAUSED BY REDUCTION OF FLUVIAL SAND SUPPLY DUE TO EXCESS SAND MINING AND BEACH RECOVERY AFTER PROHIBITION OF MINING
PREDICTION OF BEACH EROSION CAUSED BY REDUCTION OF FLUVIAL SAND SUPPLY DUE TO EXCESS SAND MINING AND BEACH RECOVERY AFTER PROHIBITION OF MINING
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过度采砂导致河沙供应减少及禁采后海滩恢复对海滩侵蚀的预测
DOI：
10.9753/icce.v33.sediment.61
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Shiho Miyahara
中科院分区：
文献类型：
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作者：
T. San;T. Uda;Norikazu Ohashi;Hitoshi Iwamoto;M. Serizawa;Toshinori Ishikawa;Shiho Miyahara
长期的地形变化，自1968年以来，沿着整个静冈和清水海岸，包括17公里的延伸之间的阿部河口和尖的三本松原沙嘴进行了调查。这些海岸的海滩侵蚀是由于1967年之前过度的河床采矿导致阿部河沉积物供应减少而引发的。1982/1983年后，河流天然砂供应增加，这些海岸发生了淤积。测量的地形变化进行了复制使用的轮廓线的变化模型，考虑到晶粒尺寸的变化。不仅砂体的运动，而且海岸线和水深的变化进行了数值再现。计算结果与实测地形变化吻合较好。
Long-term topographic changes since 1968 along the entire Shizuoka and Shimizu coasts including a 17 km stretch extending between the Abe River mouth and the tip of the Mihono-matsubara sand spit were investigated. Beach erosion of these coasts was triggered by the decrease in sediment supply from the Abe River due to excessive riverbed mining until 1967. After 1982/1983, natural sand supply from the river increased and accretion occurred on these coasts. Measured topographic changes were reproduced using the contour-line-change model considering changes in grain size. Not only the movement of the sand body but also the shoreline and bathymetric changes were numerically reproduced. The calculated results were in good agreement with the measured topographic changes.