山东半岛东、北部海滩动力地貌特征及影响因素  

Beach Morphodynamics and Impact Factors on the Beaches in the Northern and Eastern of Shandong Peninsula

作　　者：周良勇[1,2] 薛春汀[1,2] 刘健[1,2] 梁源[1,2] 

机构地区：[1]国土资源部海洋油气资源和环境地质重点实验室,山东青岛266071 [2]国土资源部青岛海洋地质研究所,山东青岛266071

出　　处：《海洋科学进展》2013年第1期83-94,共12页Advances in Marine Science

基　　金：中国地质调查局国土资源大调查项目--山东半岛北部滨海环境地质调查与评价(200311000005);国土资源部油气资源和环境地质重点实验室基金--海岸工程影响下废弃黄河三角洲海岸动力地貌研究(MRE201013)

摘　　要：根据2003—2006年进行的5次重复测量海滩剖面、海滩平面形态及波浪-沉积物参数(Dean参数),对山东半岛东、北部典型海滩进行动力地貌类型的划分;通过对比研究区域北部海滩、东部海滩剖面季节性变化的不同,研究其与波浪条件的关系。结果表明:1)波浪-沉积物参数在该地区动力地貌类型划分中具有指标性,北部海滩以消散型和过渡型为主,而东部海滩主要为过渡型和反射型的海滩。2)海滩砂坝和海滩剖面形态显示北部海滩和东部海滩的在冬夏有相反的变化趋势。北部夏季风浪小,易出现海滩砂坝;而东部冬季风浪小,剖面上易出现海滩砂坝。3)大部分岸段同时受到波浪和潮汐的作用,但是波浪条件的季节性不同,仍然对海滩地貌起主要作用。Types of beach morphodynamics are divided for the typical beaches along the northern and east- ern coasts of Shandong Peninsula based on beach-flat forms, wave-sediment parameters （Dean parameters） and five repeated beach profile surveys carried out from 2003 to 2006. Relationships between the beach morphodynamical types and the wave conditions are also discussed by comparing the differences in seasonal changes of beach profiles in the north with those in the east. The results show that： 1） according to the wave-sediment parameters, which are indicative of division of beach morphodynamical types in the studied areas, the beaches along the northern coast of the peninsula are dominated by a dissipative type and a tran- sition type, whereas along the eastern coast of the peninsula the beaches are mainly composed of a transi- tion type and a reflective type; 2） the forms of beach bars and beach profiles indicate that the beaches along the northern coast of the peninsula have a changing tendency opposite to those along the eastern coast of the peninsula in summer and winter, with the beach bars occurring frequenctly on the former profiles in summer and on the latter profiles in winter due to small waves; 3） although the northeastern coast of the peninsula is mostly subjected to the actions of waves and tides at the same time, the seasonal changes in wave conditions have played an more important role to the beach morphodynamies of the beaches.

关 键 词：山东半岛东、北部海滩 海滩剖面 海滩倾向 波浪-沉积物参数(Dean参数) 海滩地貌动力类型 

分 类 号：P737.1[天文地球—海洋地质]