| 弯曲河道演化的元胞自动机模拟 |
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| 引用本文： | 刘树龙,张怡,刘重霄,王旭明.弯曲河道演化的元胞自动机模拟[J].宁夏大学学报(自然科学版),2009,30(4). |
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| 作者姓名： | 刘树龙 张怡 刘重霄 王旭明 |
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| 作者单位： | 1. 宁夏大学,物理电气信息学院,宁夏,银川,750021
2. 首都经贸大学,外语系,北京,100070 |
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| 基金项目： | 国家自然科学基金资助项目，教育部新世纪优秀人才支持计划，宁夏自然科学基金资助项目 |
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| 摘 要： | 提出了二维元胞自动机模型用以模拟弯曲河道的演化.模型体现了河道冲淤状态与水流之间的反馈作用,以及河道对冲淤的历史记忆机制.将模型用于一个正弦派生曲线所产生的简单河道,结果能够再现弯曲河道演化的一些典型特征,如凹岸冲刷凸岸淤积、河道深鸿线的迁移方向、河岸演化规模的幂分布等.
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| 关 键 词： | 元胞自动机 弯曲河型 演化 幂律分布 |
Simulating the Evolution of A Meandering River Channel With A Cellular Automation Model |
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| Liu Shulong,Zhang Yi,Liu Chongxiao,Wang Xuming.Simulating the Evolution of A Meandering River Channel With A Cellular Automation Model[J].Journal of Ningxia University(Natural Science Edition),2009,30(4). |
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| Authors: | Liu Shulong Zhang Yi Liu Chongxiao Wang Xuming |
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| Institution: | 1(1.School of Physics and Electrical Information Engineering; Ningxia University; Yinchuan 750021; China; 2.Department of Foreign language; Capital University of Economics and Business; Beijing 100803; China); |
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| Abstract: | In this paper, a two-dimensional cellular automation model is proposed to simulate the evolution of river channel. The model incarnates the mechanisms of the feedback between the riverbed and the flow, as well as the memorial ability of channel cell to the accumulated sediment erosion or sedimentation. The simulated results for a meandering channel,which is produced by a so-called descendent curve of sinusoidal, show the characteristics of a natural meandering channel such as the concave bank is eroded while the convex bank is deposited; the deepest curve of the channel moves towards the concave bank; the evolutive scale of the bank is power law distribution, and so on. |
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| Keywords: | cellular automata meandering river evolution power law distribution |
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