尾闾河道自组织过程动态模拟
Cellular model-based approach to self-organization channel formation in fluvial-deltaic systems
查看参考文献30篇
文摘
|
河流尾闾改道后新河道的形成演化具有非线性复杂性。文中在元胞地貌演化模型框架下,提出一种改进后的多流路算法,基于简化的水流和沉积物运移规则,通过元胞间局部的相互作用,模拟河流尾闾改道后三角洲平原上的水沙运移及侵蚀/沉积过程,再现了新河道从无到有的突现特征以及微地形调整的复杂动态。对模型的敏感性分析表明,新河道的突现是三角洲河流-平原系统内在的自组织作用结果和本质特征。 |
其他语种文摘
|
Channel avulsion and evolution in deltaic plain tends to be complicated by a wide range of different types of non-linear processes.Understanding the ways in which channel development after avulsion is critical to tackling many geomorphologic and river management problems.In the paper,a cellular framework was used to explore the dynamics of new channel development processes after avulsion in a fluvial deltaic system.An improved multi-flow routing algorithm was integrated into the framework for modeling water and sediment across the landscape.Erosion and deposition caused by flowing water follow simple rules considering the slope between neighboring cells and other variables.Specifically,the algorithm allows for lateral transfer of water and sediment at angles of up to approximately 90° to the downstream direction.Modeling results appear able to reproduce many of the larger-scale emergent and self-organizing features observed in natural environment.This study demonstrates the utility of relatively simple algorithms to simulate complex emergence features of channel processes in fluvial-deltaic system. |
来源
|
地学前缘
,2011,18(3):324-330 【核心库】
|
关键词
|
河道
;
元胞模型
;
自组织
;
突现
;
模拟
|
地址
|
1.
中国科学院地理科学与资源研究所, 北京, 100101
2.
中国科学院植物研究所, 北京, 100093
|
语种
|
中文 |
文献类型
|
研究性论文 |
ISSN
|
1005-2321 |
学科
|
地球物理学 |
基金
|
国家自然科学基金项目
;
中国科学院资源与环境信息系统国家重点实验室开放研究基金
|
文献收藏号
|
CSCD:4233377
|
参考文献 共
30
共2页
|
1.
Strahler A N. Dynamic basis of geomorphology.
Geological Society of America Bulletin,1952,63(9):923-938
|
被引
25
次
|
|
|
|
2.
Chorley R J.
Geomorphology and general systems theory.USGS Professional Paper,1962:1-10
|
被引
1
次
|
|
|
|
3.
Phillips J D. Nonlinear dynamical systems in geomorphology:Revolution or evolution.
Geomorphology,1992,5(5):219-229
|
被引
9
次
|
|
|
|
4.
Stφlum H H. River meandering as a self-organization process.
Science,1996,271:1710-1713
|
被引
2
次
|
|
|
|
5.
Hooke J. River meander behaviour and instability:A framework for analysis.
Transactions of the Institute of British Geographers,2003,28:238-253
|
被引
2
次
|
|
|
|
6.
Jerolmack D J. Complexity in a cellular model of river avulsion.
Geomorphology,2007,91(3/4):259-270
|
被引
6
次
|
|
|
|
7.
De Boer D H. Self-organization in fluvial landscapes:Sediment dynamics as an emergent property.
Computers & Geosciences,2001,27(8):995-1003
|
被引
1
次
|
|
|
|
8.
Lane S N. High resolution numerical modelling of three-dimensional flows over complex river bed topography.
Hydrological Processes,2002,16(11):2261-2272
|
被引
1
次
|
|
|
|
9.
Bates P D. Investigating the behaviour of two-dimensional finite element models of compound channel flow.
Earth Surface Processes and Landforms,1997,22:3-17
|
被引
2
次
|
|
|
|
10.
Coulthard T J. Cellular modelling of river catchments and reaches:Advantages,limitations and prospects.
Geomorphology,2007,90:192-207
|
被引
7
次
|
|
|
|
11.
Lane S N. Linking river channel form and process:Time,space and causality revisited.
Earth Surface Processes and Landforms,1997,22:249-260
|
被引
4
次
|
|
|
|
12.
Nicholas A P. Cellular modelling in fluvial geomorphology.
Earth Surface Processes And Landforms,2005,30(5):645-649
|
被引
1
次
|
|
|
|
13.
Martin Y. Numerical modelling of landscape evolution:Geomorphological perspectives.
Progress in Physical Geography,2004,28:317-339
|
被引
1
次
|
|
|
|
14.
Murray A B. A cellular model of braided rivers.
Nature,1994,371:54-57
|
被引
29
次
|
|
|
|
15.
Coulthard T J. A cellular model of Holocene upland river basin and alluvial fan evolution.
Earth Surface Processes and Landforms,2002,27:269-288
|
被引
12
次
|
|
|
|
16.
Willgoose G. Mathematical modelling of whole landscape evolution.
Annual Review of Earth and Planetary Sciences,2005,33:433-459
|
被引
1
次
|
|
|
|
17.
Murray A B. Properties of a cellular braided-stream model.
Earth Surface Processes and Landforms,1997,22:1001-1025
|
被引
10
次
|
|
|
|
18.
Thomas R. Simulation of braided flow using a new cellular routing scheme.
Geomorphology,2002,43:179-195
|
被引
7
次
|
|
|
|
19.
Van De Wiel M J. Embedding reach-scale fluvial dynamics within the CAESAR cellular automaton landscape evolution model.
Geomorphology,2007,90(3/4):283-301
|
被引
4
次
|
|
|
|
20.
Desmet P J J. Comparison of routing algorithms for digital elevation models and their implications for predicting ephemeral gullies.
International Journal of Geographical Information Systems,1996,10(3):311-331
|
被引
19
次
|
|
|
|
|