Water Science and Engineering 2011, 4(2) 133-142 DOI:   10.3882/j.issn.1674-2370.2011.02.002  ISSN: 1674-2370 CN: 32-1785/TV

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Characteristic analysis
precipitation complexity
Article by Qing-Hua,.L

Complexity analysis of precipitation in changing environment in Chien River Basin, China

Qing-hua LUAN1,   Hao WANG2,  Da-zhong XIA3

1.College of Water Conservancy and Hydropower, Hebei University of Engineering,                Handan 056021, P. R. China;
2.Department of Water Resources, China Institute of Water Resources and Hydropower Research,      Beijing 100038, P. R. China;
3.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, P. R. China


The hydrologic process influenced by the multi-action of climate, geography, vegetation and human activities becomes more and more complex, which is the important characteristic of hydrologic system. The different complexity distributions of precipitation process of Chien River Basin (sub-basin of MinChiang Basin) in two periods(one is from 1952 to 1980 and the other is from 1981 to 2009) are illustrated respectively in this paper in which the fractal based on Continuous Wavelet Transform (CWT) is used. The results are indicated as follows: first, in basin scale the precipitation process in the latter period is more complex than that in the former period; second, the maximum value of the complexity distribution moved from the east to the middle and last, through analyzing the time-information and space-information concealed in this complexity change, the precipitation characteristics in changing environment are illuminated in study Basin. This study would provide reference for the research of disaster pre-warning in the changing environment and for the integrated water resources management in the local basin.

Keywords Characteristic analysis   precipitation complexity   CWT   fractal  
Received 2011-04-11 Revised 2011-05-31 Online: 2011-10-09 
DOI: 10.3882/j.issn.1674-2370.2011.02.002

This work was supported by the National Natural Science Foundation of China (Grant No. 40901023)

Corresponding Authors: Qinghua LUAN
Email: carol97011202@163.com
About author:


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