舟山朱家尖西南涂海域沉积环境和冲淤演变
发布时间:2018-05-15 21:26
本文选题:朱家尖西南涂 + 沉积环境 ; 参考:《海洋湖沼通报》2017年04期
【摘要】:结合朱家尖西南涂围垦规划,通过对所处滩涂及其附近海域进行地质地貌调查,水深地形测量、表层沉积物采样与分析,利用历史图件资料综合对比分析等研究手段,结果表明:海域沉积物以粉砂物质为主,沉积环境可划分为E-Ⅱ、E-Ⅲ、D-Ⅲ三个区;受区域落潮流优势流、波浪以及水道内纵轴横向环流等动力条件及人类活动的共同影响,2006~2012年区内潮滩近岸侧冲刷,冲刷幅度130cm·a~(-1);远岸侧淤积,平均淤积幅度90~100cm·a~(-1);区内淤积量大于冲刷量;自2012年以来,区内呈微弱淤积趋势,断面平均净淤积量小于10cm·a~(-1)。
[Abstract]:Combined with the reclamation planning of Zhujiajian southwest area, by means of geological and geomorphological investigation, bathymetric topographic survey, surface sediment sampling and analysis, and comprehensive comparison and analysis of historical map data, etc. The results show that the sediment in the sea area is mainly silty, and the sedimentary environment can be divided into three areas: E- 鈪,
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