2014-2015年辽东湾东岸砂质海滩海岸侵蚀现状评价  

Evaluation of the Erosion Status of Sandy Beach Coast Along the Eastern Coast of the Liaodong Bay From 2014 to 2015

作　　者：马恭博 王伟伟[1] 王玉广[1] 付元宾[1] 袁蕾[1] 

机构地区：[1]国家海洋环境监测中心,辽宁大连116023

出　　处：《海岸工程》2017年第3期21-29,共9页Coastal Engineering

基　　金：国家自然科学基金项目--侵蚀沙质海岸演变过程中的岸滩泥沙通量研究(41306043);全国海岸侵蚀灾害监测与评价业务化项目

摘　　要：根据2014-2015年对大连李官华铜海岸、营口白沙湾海岸、营口仙人岛海岸以及营口鲅鱼圈月亮湾海岸的岸滩地形监测数据,依据海岸侵蚀灾害监测与评价技术方法,对辽东湾东岸的4个连续砂质海岸的稳定性进行了分析。结果表明:海滩岸线发生侵蚀的岸段主要分布在营口仙人岛海岸和大连李官华铜海岸南部,其中仙人岛岸段岸线后退距离最为严重,达到了7.8m/a;从断面地形监测结果来看,大连李官华铜海岸发育较强侵蚀,岸滩下蚀速率为9.35cm/a。辽东湾东岸的华铜海岸和仙人岛岸段,侵蚀现象仍然明显;而开展了防护修复工程的月亮湾、白沙湾等原侵蚀岸段,都基本趋于稳定,没有再发生海岸侵蚀现象。The stability of four continuous sandy coasts along the eastern coast of the Liaodong Bay,which include the Huatong coast of Dalian Liguan,the Baisha Bay coast of Yingkou,the Xianren Island coast of Yingkou and the Yueliang Bay coast of Yingkou Bayuquan,is analyzed based on the data from beach topographical monitoring carried out in 2014-2015 and by means of the methods for monitoring and evaluation of coastal erosion disaster.The results show that the coastal sections where the beach shoreline was eroded are mainly distributed at the Xianren Island coast of Yingkou and in the south of the Huatong coast of Dalian Liguan.Of them,the shoreline around the Xianren Island coast retreated most seriously,reaching to 7.8m/a.From the view of the topographical monitoring of the section,strong erosion occurred at the Huatong coast of Dalian Liguan,with the speed of beach erosion being 9.35cm/a.The coastal erosion is still prominent along the eastern coast of the Liaodong Bay,particularly along the Huatong coast and the Xianren Island coast.The Yueliang Bay coast and the Baisha Bay coast,which were eroded before,but now have been protected and restored,all tend to be stable and no erosion phenomenon occurs again there.

关 键 词：海岸侵蚀 辽东湾砂质海岸 岸线稳定性 岸滩地形 

分 类 号：P736.22[天文地球—海洋地质]