| 长江河口涨、落潮槽内的沙波地貌和输移特征 |
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| 引用本文： | 王永红,沈焕庭,李九发,茅志昌.长江河口涨、落潮槽内的沙波地貌和输移特征[J].海洋与湖沼,2011,42(2):330-336. |
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| 作者姓名： | 王永红 沈焕庭 李九发 茅志昌 |
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| 作者单位： | 中国海洋大学 海底科学与探测技术教育部重点实验室;国土资源部海洋油气资源与环境地质重点实验室;华东师范大学 河口海岸国家重点实验室;华东师范大学 河口海岸国家重点实验室;华东师范大学 河口海岸国家重点实验室 |
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| 基金项目： | 国家自然科学基金“长江口复式河槽沉积地貌演变与水动力的相互作用”, 40406015 号; 国家重点基础研究规划（973）项目: 2005CB422304 号和国土资源部海洋油气资源与环境地质重点实验室基金, MRE200903 号资助 |
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| 摘 要： | 涨、落潮槽是河口区的重要地貌单元,槽内由于不同的优势流作用而表现出不同的泥沙运移特征。沙波是底沙输移的表现,因此研究槽内的沙波特征对于涨、落潮槽的水动力和沉积地貌研究有重要的意义。本文依据现场声纳观测、测深仪测深、表层取样和现场水动力观测等方法获得河槽床面沙波和水动力资料,对沙波的几何形态、波高和全潮周期的迁移距离进行...
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| 关 键 词： | 长江口 涨、落潮槽 沙波地貌 输移特征 动力响应 |
| 收稿时间： | 2010/3/12 0:00:00 |
| 修稿时间： | 2010/9/20 0:00:00 |
GEOMORPHOLOGIC FEATURES AND TRANSPORT OF SANDWAVES IN THE FLOOD AND EBB CHANNELS OF THE CHANGJIANG ESTUARY |
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| WANG Yong-Hong,SHEN Huan-Ting,LI Jiu-Fa and MAO Zhi-Chang.GEOMORPHOLOGIC FEATURES AND TRANSPORT OF SANDWAVES IN THE FLOOD AND EBB CHANNELS OF THE CHANGJIANG ESTUARY[J].Oceanologia Et Limnologia Sinica,2011,42(2):330-336. |
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| Authors: | WANG Yong-Hong SHEN Huan-Ting LI Jiu-Fa and MAO Zhi-Chang |
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| Institution: | Key Lab of Submarine Geosciences and Technology of Ministry of Education, Ocean University of China; Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources;State key laboratory of Estuarine & Coastal Research, East China Normal University;State key laboratory of Estuarine & Coastal Research, East China Normal University;State key laboratory of Estuarine & Coastal Research, East China Normal University |
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| Abstract: | Flood and ebb channels are important geomorphological units. Different deposits and hydrodynamic properties exist in these channels. Sandwave is an important way for bedload transport. Sandwave data obtained from sonar, geometric features, sedimentary composition and migratory distance during one tide cycle are analyzed and calculated. The results show the length and height of the sandwave in the flood channel are smaller than that in the ebb channel, but the L/H ratio of complex sandwave in the flood channel is higher. Sandwave in the ebb channel inclined to move downstream while sandwave in the flood channel inclined to move upstream. The sandwave in the ebb channel moves downstream during both spring and neap tides while sandwave in one flood channel moves upstream during spring tide. The features of sandwave are correlated to channel geomorphological properties, surrounding sand ridge and hydrodynamic environment. |
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| Keywords: | The Changjiang Estuary The flood and ebb channel Sandwave geomorphology Transport features Dynamic response |
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