外钓山岛附近海域冲淤演变分析  

Analysis on Scouring-Silting Variation of the Sea Area Nearby Waidiaoshan Island

作　　者：宣胜男 曾渊 尹晶[3] 倪云林 祝悦 XUAN Sheng-nan;ZENG Yuan;YIN Jing(School of Port ＆ Transportation Engineering of Zhejiang Ocean University,Zhoushan 316022;Port and Shipping Management Bureau of Taizhou,Taizhou 318000;National Marine Environmental Monitoring Center,Key Laboratory of Sea-Area Management Technology,SOA,Dalian 116023,China)

机构地区：[1]浙江海洋大学港航与交通运输工程学院,浙江舟山316022 [2]台州市港航管理局,浙江台州318000 [3]国家海洋环境监测中心国家海洋局海域管理技术重点实验室,辽宁大连116023

出　　处：《浙江海洋大学学报（自然科学版）》2018年第4期327-331,共5页Journal of Zhejiang Ocean University：Natural Science

基　　金：浙江省自然科学基金(LQ18E090006);国家海洋局海域管理技术重点实验室基金资助项目(201603);浙江省教育厅一般科研项目(Y201636216);浙江省高等教育课堂教学改革研究项目(kg20160203)

摘　　要：基于外钓山岛附近海域2004年、2007年和2011年3个年份的水深数据,结合Google Earth的影像资料,应用地理信息系统,详细研究了2004-2015年间外钓山岛的岸线演变和2004-2011年间外钓山岛整体开发前附近海域的冲淤变化。结果显示,外钓山岛的岸线总体保持稳定,只是在局部岸段由于围海造地和新建码头改变了原有的岸线形态;附近海域经历了由缓慢冲刷到较快淤积的调整过程,但总体上以淤积为主,平均淤积0.61 m,淤积速率为7.6 cm/a。同时,利用水文泥沙实测资料和开发利用现状,探讨了外钓山岛附近海域的冲淤原因和动态趋势,说明人类活动是导致该海域淤泥的主要原因。Based on the bathymetric data of the sea area nearby Waidiaoshan Island in 2004, 2007, 2011, and the image data on Google Earth, geographic information system is applied to study the coastline evolution of Waidiaoshan Island from 2004 to 2015 and the scouring-silting variation of the sea area nearby Waidiaoshan Island before its large scale development, from 2004 to 2015. The results indicate the coastline maintains sta- bility on the whole, except for reclamation and wharf construction in some local parts changing its original form. The sea area nearby Waidiaoshan Island has experienced the process of slowly scouring to quickly silt- ing. But in generally, it is characterized by deposition, with average siltation thickness 0.61 m and its rate 7.6 cm/a. Meanwhile, the scouring-silting variation reason and trend is discussed according to the hydrological and sediment data as well as the exploitation situation, illustrating the primary cause to deposition is human impact.

关 键 词：外钓山岛 数字高程模型 岸线演变 冲淤变化 人类活动 

分 类 号：P753[交通运输工程—港口、海岸及近海工程]