Analysis of Beach Erosion Around Large-Scale Coastal Structures
Analysis of Beach Erosion Around Large-Scale Coastal Structures
复制标题
大型海岸结构周围的海滩侵蚀分析
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
Y. Kobayashi
中科院分区：
文献类型：
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作者：
T. Uda;M. Sumiya;Y. Kobayashi
茨城县海岸面向太平洋，海岸线长达181公里。自 20 世纪 60 年代初以来，该海岸建造了许多与港口相关的建筑。 25年过去了，由于沿海建筑物建设的影响，海滩发生了一些显着的变化。本研究以茨城县海岸为研究区域，旨在考察大型建筑物周围海滩变化和海岸建筑物破坏的实际情况。为此，沿海岸拍摄了航空照片，并进行了地形调查和滩面物质中值直径的测量。自1975年以来，每年收集一次大原港和叶崎渔港周围的水深数据，以研究大型沿海建筑物周围的海滩变化。为了对这些数据进行分析，使用 1947 年至今的四组航拍照片对海岸线变化进行了比较。此外，还通过探测数据研究了海滩地形的时空变化。
The coast of Ibaraki Prefecture, facing the Pacific Ocean, has an alongshore stretch of 181 km. On this coast many structures associated with harbors have been constructed since early 1960s. Since then 25 years have passed, and some notable beach changes due to the influence of the construction of the coastal structures have been observed. This study aims to examine the actual situation of the beach change around large-scale structures and the damages of the coastal structures selecting the coast of Ibaraki Prefecture as the study area. For the purpose aerial photographs were taken along the coast, and the topographic surveys and measurements of median diameter of beach-face materials were made. Data of the soundings having been conducted once a year since 1975 around Oharai Port and Hazaki Fishery Harbor were collected in order to study the beach changes around the large-scale coastal structures. For the analysis of these data the comparison of the shoreline changes were performed by using four sets of aerial photographs since 1947 to the present. Moreover, temporal and spatial changes of the beach topography were investigated by the sounding data.