水道港口2016，Vol.37Issue(6)：593-598,6.
珠江河口水下三角洲冲淤演变分析
Analysis on morphological evolution of underwater delta in the Pearl River Estuary
胡煌昊 1徐阳 1官明开 1蒋齐嘉2
作者信息
- 1. 河海大学港口海岸与近海工程学院，南京210098
- 2. 四川农业大学水利水电学院，雅安625014
- 折叠
摘要
Abstract
Underwater Digital Elevation Models (DEM) of the Pearl River Estuary were built based on the his⁃torical bathymetric charts to analyze quantitatively morphological changes of underwater delta. The impacts of sedi⁃ment supply and human activities on morphological evolution of underwater delta were analyzed. During the period between 1960s and 2000s, the results suggest that the PRD experienced a major stage of accretion, with net erosion only in some local zones such as deep channels. During the 1990s, sedimentation in Huangmao Bay water area and Lingding Bay water area showed a decreasing trend, but increased in Jitimen water area. And Modaomen water area was in a state that shoals silted and deep troughs scoured during the 1990s. Sediment supply from upstream de⁃creased except Lingding Bay water area, which led to a weakening trend of sediment deposition in these regions. Hu⁃man activities such as land reclamation and waterway regulation have significant impacts on morphological evolu⁃tion of underwater delta.关键词
珠江河口/水下三角洲/地形变化/数字高程模型/人类活动Key words
Pearl River Estuary/underwater delta/morphological changes/Digital Elevation Model/human ac-tivities分类
建筑与水利引用本文复制引用
胡煌昊,徐阳,官明开,蒋齐嘉..珠江河口水下三角洲冲淤演变分析[J].水道港口,2016,37(6):593-598,6.
