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| 基金项目:国家自然科学基金,我国近海海洋综合调查与评价908专项课题 |
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| Numerical Study on Characteristics of Beach Evolution During Storm Surge Periods in West Coast of Laizhou Bay |
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LIU Guiwen,HUANG Haijun,LIU Yanxia,YAN Liwen,DU Tingqin
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Institute of Oceanology Chiness Academy of Seiences Graduate School of Chinese Academy of Sciences
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| Multiple surveys were conducted before and after storm surge at four beach sections,Sediment samples were analyzed and numerically simulated for understanding the characteristicsof becach reaction to storm surge and morphological evolution ,The results show that the sediment sources in this area do not increase in amount;the beach is basically stable in normal weather.While in gale weather,sediment from Yellow River and the eroded matters from the bank becomes a part of the sediment sources.The northem beach of Xiaoqing estuary is eroded seriously, while the southern beach is overall stable,Thw tidal creeks changed from the northern beach are transported greatly sea-ward and the inshore sediment becomes sandy,while that of the southem beach becomes silty,The sand transporting capability is almost 100 times of that in nomal weather. Human activities and big storm surges are the main reasons for the beach evolution. |
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