中文摘要：

介绍了日本第52回海岸工学讲演会的概况，从海岸灾害、海岸生态环境、波浪与水流、海岸泥沙运动与地形变化、海岸建筑物等5个方面综述了日本海岸工程研究的进展情况。

英文摘要：

The advances in the research on coastal disasters, coastal ecological environments, waves and currents, coastal sediments and morpholngical changes, and coastal structures in Japan are introduced by summarizing the papers which were presented in the 52^nd Annual Conference on Coastal Engineering in Japan.