| Modern changes of tidal troughs among the radial sand ridges in northern Jiangsu coastal zone | |
| Huang Haijun1; Du Tingqin1,2; Gao Ang3 | |
| 2009-08-01 | |
| 发表期刊 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| ISSN | 0254-4059 |
| 卷号 | 27期号:3页码:658-666 |
| 文章类型 | Article |
| 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.; 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. |
| 关键词 | Radial Sand Ridges Tidal Trough Migration Remote Sensing Gis Northern Jiangsu Province |
| 学科领域 | Limnology ; Oceanography |
| DOI | 10.1007/s00343-009-9192-1 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000270742000034 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/3668 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang Haijun,Du Tingqin,Gao Ang. Modern changes of tidal troughs among the radial sand ridges in northern Jiangsu coastal zone[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2009,27(3):658-666. |
| APA | Huang Haijun,Du Tingqin,&Gao Ang.(2009).Modern changes of tidal troughs among the radial sand ridges in northern Jiangsu coastal zone.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,27(3),658-666. |
| MLA | Huang Haijun,et al."Modern changes of tidal troughs among the radial sand ridges in northern Jiangsu coastal zone".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 27.3(2009):658-666. |
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