| 水动力在江苏北部岸外辐射沙洲形成和演变中的作用 |
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| 引用本文： | 吴永成,黄海军,杨玉玲.水动力在江苏北部岸外辐射沙洲形成和演变中的作用[J].海洋科学集刊,1998(40):55-63. |
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| 作者姓名： | 吴永成 黄海军 杨玉玲 |
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| 作者单位： | 中国科学院海洋研究所 |
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| 基金项目： | 中国科学院海洋研究所调查研究报告第2781号
国家自然科学重点基金项目成果之一，19236120号 |
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| 摘 要： | 江苏北部(下称苏北)岸外辐射沙洲形态特殊,面积广大,是我国唯一、世界罕见的沉积动力地貌特征类型区。开展该区的调査和研究对苏北海岸带开发和海洋沉积动力学理论研究都具有非常重要的意义。近年来我国学者通过大量海洋水文、泥沙、海底地形和地貌调查研究,对苏北海岸的成因和岸外沙洲的演变提出了许多新的看法(王文清等,1982)。本文通过对历史资料和1958-1993年苏北海岸带调査资料、卫星照片等的对比分析,以及利用数值模拟方法的诊断,指出水动力是苏北海岸和岸外沙洲形成和演变的主要作用力。
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| 关 键 词： | 水动力、辐射沙洲、苏州北部 |
| 收稿时间： | 1996/7/24 0:00:00 |
HYDRAULIC DYNAMICAL EFFECT ON THE FORMATION AND EVOLUTION PROCESSES OF THE DELTAIC SAND BANKS OFF NORTHERN JIANGSU COAST |
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| Wu Yongcheng,Huang Haijun,Yang Yuling.HYDRAULIC DYNAMICAL EFFECT ON THE FORMATION AND EVOLUTION PROCESSES OF THE DELTAIC SAND BANKS OFF NORTHERN JIANGSU COAST[J].Studia Marina Sinica,1998(40):55-63. |
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| Authors: | Wu Yongcheng Huang Haijun Yang Yuling |
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| Institution: | Institute of Oceanology,Chinese Academy of Sciences |
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| Abstract: | Historical hydrologic and sedimentation data and those from recent years coastal investigations in the north part of Jiangsu coast were used in this study on the formation and evolution processes of silty coast and offshore tidal sand ridges. The result showed that the sediment discharged from the paleo-yangtze and paleo-huanghe Rivers laid the foundation of the silty coast and offshore tidal sand ridges of Jiangsu. The rapid extension of the coastline seaward and combination with pre-1855 A. D. sand banks left insufficient time for developing tidal current transport sediments, so, only the primary radial form of the tidal sand ridges (sand banks) were gradually formed. After the Huanghe River moved northward in 1855 A.D, this sediment source cut off, the influence of tidal current on Jiangsu coast sediment is strengthened. Typical radial tidal sand ridges coast and offshore tidal sand ridges are actually the new balance between hydrology and sedimentation influenced by tidal currents and waves during the period of stormy weather and their recovery. |
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