胶州湾大沽河河口近岸海域短时间尺度沉积动力过程  

SHORT TERM DEPOSITIONAL DYNAMIC PROCESSES AT DAGU RIVER MOUTH OF JIAOZHOU BAY

作　　者：陈小英[1,2] 刘金庆[1,2] 郭磊[1,2,3] 刘晓磊[3] 印萍[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,中国地质调查局青岛海洋地质研究所,青岛266071 [2]青岛海洋科学与技术国家实验室,海洋矿产资源评价与探测技术功能实验室,青岛266071 [3]中国海洋大学环境科学与工程学院,青岛266100

出　　处：《海洋地质与第四纪地质》2016年第6期45-50,共6页Marine Geology & Quaternary Geology

基　　金：国家自然科学基金项目(41506107);科技部基础性工作专项项目(2013FY112200);海洋地质保障工程项目(GZH201100203);中国-东盟海洋地学研究与减灾防灾倡议

摘　　要：2012年9月24日—10月4日,在胶州湾大沽河河口近岸水域进行了长达10天的原位监测,并获得了波浪、潮流、水位、海床变化、水体浊度等同步监测数据。同时,在本次观测期间捕捉到了一次强的西北向离岸风天气过程。分析结果表明:在东南向岸风的天气条件下,大沽河河口海域海床地形呈冲淤交替的变化规律;但当风向转为强劲的离岸风时,波浪向岸传播受到抑制,波高和波能迅速减小,海床则表现为短时间的快速淤积。此外,以胶州湾大桥为界,大桥北部表层沉积物呈向西运移趋势,大桥南部沉积物呈向东运移趋势。A platform with autonomous instruments was established for 10 days to monitor synchronous waves,currents,water level,seabed changes and water turbidity at the Dagu river mouth of the Jiaozhou Bay during the period from September 24 to October,2012.Moreover,a northwest offshore strong winds process was caught successfully during the period.The results suggest that the seabed was under an alternative erosion-deposition pattern during the period landward winds dominate,but under rapid deposition when it met with offshore strong winds from northwest,since wave propagation toward the shore is limited and wave height and wave energy decrease in a sudden.In addition,The Jiaozhou Bay Bridge renders some impact to the sediment movement.The surface sediment of seabed to the north of the bridge shows a westward transporting tendency,whereas surface sediment of seabed shows an eastward transporting tendency to the south of the bridge.

关 键 词：沉积环境 水动力条件 离岸风 大沽河 

分 类 号：P736.2[天文地球—海洋地质]