Morphodynamic System and the Evolution of Laolonggou Tidal Inlet
详细信息
- 责任者：Li Gang (Key Laboratory of Coast and Island Development ; Ministry of Education ; Nanjing University ; Nanjing 210093 ; China) ; Sun Zhuyou
- 刊名：Marine Geology & Quaternary Geology
- 出版年：2011
- 卷期：31(1)
- 关键词：海岸带沉积物 ; coastal sediments ; 河北 ; Hebei Province
- 页码：p.11-19
- 图表：4 illus., 3 tables, 13 refs.
- 分类号：0200
- issnNo：ISSN0256-1492
- isbnNo：CN37-1117/P
摘要
Laolonggou is a typical tidal inlet as a part of the barrier-lagoon system of the north Bohai Bay. According to the morphology of terminal shoal, the edge of the ebb tidal delta is located around-11 m of water depth. A main ebb tidal passage is developed on the east side of ebb tidal delta,in which ebb jet dominates. A swash platform with gentle slope is on the west side of the delta, on which the tidal dynamics is the weakest and the sediment is the finest. The geomorphological evolution during 1945~2006 shows that both the tide and incident wave control the evolution of the morphological system of the Laolonggou tidal inlet. The main ebb passage swung westward due to the change of ebb jet under the influence of the movement of segmented sand bar and offshore barrier islands.