Modern changes of tidal troughs among the radial sand ridges in northern Jiangsu coastal zone
文献类型：CNKI期刊论文
| 作者 | Huang HJ(黄海军); Du TQ(杜廷芹); Gao A(郜昂) |
| 发表日期 | 2009-08-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | radial sand ridges tidal trough migration remote sensing GIS Northern Jiangsu Province |
| 英文摘要 | Using satellite images taken on different dates,GIS analysis of aerial photos,bathymetric maps and other field survey data,tidal troughs and major sand ridges in the northern Jiangsu coastal area were contrasted.The results show that there have been three types of movement or migration of tidal trough in this area:(1) Periodic and restricted,this type of trough usually developed along the beaches with immobile gully head as a result of the artificial dams and the swing range increased from gully head to the low reaches,so they have been obviously impacted by human activity and have longer swing periods;(2) Periodic and actively,this kind of trough,which swung with a fast rate and moved periodically on sand ridges,were mainly controlled by the swings of the host tidal troughs and hydrodynamic forces upon tidal sand ridge and influenced slightly by human constructions;(3) Steadily and slowly,they are the main tidal troughs with large scale and a steady orientation in this area and have slow lateral movement.The differences in migration mode of tidal trough shift result in different rates of migration and impact upon tidal sand ridges.Lateral accumulation on current tidal trough and deposition on abandoned tidal troughs are the two types of sedimentation of the tidal sand ridges formation.The whole radial sand ridge was generally prone to division and retreat although sand ridges fluctuated by the analysis of changes in talwegs of tidal troughs and shorelines of sand ridges. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Basic Research Program of China (973 Program) (Nos 40176021,40676037 and 40706027) |
| 卷 | v.27期:03页:240-248 |
| 语种 | 英文; |
| 分类号 | P731.23 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/192489]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.InstituteofOceanology,KeyLaboratoryofMarineGeologyandEnvironment,ChineseAcademyofSciences 2.GraduateSchooloftheChineseAcademyofSciences 3.StateKeyLabofEstuarineandCoastalResearch,EastChinaNormalUniversity |
| 推荐引用方式 GB/T 7714 | Huang HJ,Du TQ,Gao A. Modern changes of tidal troughs among the radial sand ridges in northern Jiangsu coastal zone. 2009. |
入库方式： OAI收割
来源：海洋研究所
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