| The coastal erosion and evolution of the Yellow River Delta abandoned lobe |
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| 作者姓名： | LI Anlong LI Guangxue CAO Lihu ZHANG Qingde DENG Shenggui |
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| 作者单位： | 1. Institute of Estuarine and Coastal Studies，Ocean University of China，Qingdao 266003，China; 2. Shandong Province Key Laboratory of Submarine Resource and Exploring Technology，Qingdao 266003，China |
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| 基金项目： | 973 National Key Project for Basic Research，No.2002CB412408，Natural Science Foundation of Shandong Province，No.Q2002E02 |
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| 摘 要： | 1IntroductionThe river deltas are generally those areas with a wealth of natural resources, and lots of ports, moreover they are important locations of human activity. Therefore, deltaic areas around the world, such as the Mississippi River delta, the Nile River delta, and the Yangtze River delta, have attracted the attentions of governments, scientists and common people. There are three big deltas in China, i.e., the Yangtze River, the Zhujiang River and the Yellow River deltas. The for…
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| 收稿时间： | 22 December 2003 |
| 修稿时间： | 25 May 2004 |
The coastal erosion and evolution of the Yellow River Delta abandoned lobe |
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| LI Anlong,LI Guangxue,CAO Lihu,ZHANG Qingde,DENG Shenggui,.The coastal erosion and evolution of the Yellow River Delta abandoned lobe[J].Journal of Geographical Sciences,2004,14(4):465-472. |
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| Authors: | LI Anlong LI Guangxue CAO Lihu ZHANG Qingde DENG Shenggui |
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| Institution: | (1) Institute of Estuarine and Coastal Studies, Ocean University of China, 266003 Qingdao, China;(2) Shandong Province Key Laboratory of Submarine Resource and Exploring Technology, 266003 Qingdao, China |
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| Abstract: | A statistic analysis predicting coastal change of the Yellow River abandoned delta lobe formed from 1964 to 1976 using Landsat TM imagery was conducted by calculating the coastal erosion/accumulation rates obtained from four different classic profiles and plotting the change curves of coastline with time. The studies showed that the regularity of the evolution of the coastline was very obvious after the delta lobe was abandoned. The coastal evolution can be divided into three different phases: erosion phase, transition phase and cyclical change phase. At present, the coast has evolved to the cyclical change phase. The natural coastline change cycle is 4 years between the dam and is 5 years to the west of the dam. In the cyclical change phase, the quasi-equilibrium line of the coast was located near the coastline of 1996, the current coast may recede 1.79 km to reach the natural equilibrium coastline. Therefore, some measures must be taken to protect the dam or the dam will be destroyed by the force of nature. The curves also revealed the magnitude of erosion/accumulation rates would decrease gradually with time. The results of the study offer guidance for coast protection, and proves that the evolution of silty coast actually was a cyclical change process too. |
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| Keywords: | Landsat TM remote sensing Yellow River Delta coast erosion erosion quasi-equilibrium line |
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