收稿日期: 2010-10-19
修回日期: 2010-10-24
网络出版日期: 2011-07-20
基金资助
国家自然科学基金项目(41006050、40676056、10772204); 中国博士后科学基金项目(20090460799)
Energy flux and dissipation in the Pearl River Estuary
Received date: 2010-10-19
Revised date: 2010-10-24
Online published: 2011-07-20
刘欢 ,吴超羽 ,包芸 . 珠江河口的能量传播和能量耗散[J]. 热带海洋学报, 2011 , 30(3) : 16 -23 . DOI: 10.11978/j.issn.1009-5470.2011.03.016
A three-dimensional numerical model that covers the river network, estuary and coastal region is developed to study the energy flux and characteristic of energy dissipation. The results are as follows. (1) The energy source in the Pearl River Estuary (PRE) is mainly from tides and freshwater, which have obvious seasonal variation. (2) There are typical hotspots where energy dissipation is higher by 1?2 orders than those in the immediate upstream and downstream sections in the PRE. This phenomenon is linked with flow dynamic structure and morphological unit. Based on the characteristic of morphology and dissipation, the hotspots can be categorized into three types: “gate” of the PRE, meandering river, and branch and junction.
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