长江口北支河口地貌特征及演变趋势分析  

An Analysis of the Geomorphology and Evolvements Trend on North Bayou of Yangtze River

作　　者：张志强[1,2,3] 蒋俊杰[2] 詹文欢[3] 李杰[2] 钱立兵[2] 

机构地区：[1]中国科学院广州地化所,广东广州510640 [2]国家海洋局南海分局,广东广州510300 [3]中国科学院边缘海地质重点实验室,南海海洋研究所,广东广州510301

出　　处：《海洋测绘》2010年第3期37-40,共4页Hydrographic Surveying and Charting

摘　　要：根据近年来侧扫声纳、单波束等野外调查资料，对长江口北支河口地形地貌特征进行了分析。分析结果表明，研究区内水深变化从0～20m，海底地形总体上由西向东倾斜；区内地貌特征主要由两个拦门沙、两个深槽以及一个沙脊组成。同时，利用历史海图与实测水深数据进行了对比分析，分析了研究区内地形地貌的演变趋势。Based on field survey data,this paper analyzed and processed the collected data of water depth and side scan sonar at north bayou of Yangtze river. The conclusion is that geomorphology of north bayou consists of Huangguasha trough, Guyuansha trough and a ridge etc. In addition, the article collected bathymetric map of north bayou of Yangtze river in different years. We did comparative analysis of the map and the actual measurement data, concluded evolutionary process of this area in decades, and analyzed the evolutionary trend.

关 键 词：海底地貌 侧扫声纳 海图 长江口 

分 类 号：P229.3[天文地球—大地测量学与测量工程]