Multiple Time Scale Analysis of River Runoff Using Wavelet Transform for Dagujia River Basin, Yantai, China

ISWC OpenIR > 水保所知识产出(1956---)

	Multiple Time Scale Analysis of River Runoff Using Wavelet Transform for Dagujia River Basin, Yantai, China
	Liu Delin; Liu Xianzhao; Li Bicheng; Li, BC
	2009
发表期刊	CHINESE GEOGRAPHICAL SCIENCE
卷号	19 期号:2 页码:158-167
摘要	Based on monthly river runoff and meteorological data, a method of Morlet wavelet transform was used to analyze the multiple time scale characteristics of river runoff in the Dagujia River Basin, Yantai City, Shandong Province. The results showed that the total annual river runoff in the Dagujia River Basin decreased significantly from 1966 to 2004, and the rate of decrease was 48x10(6)m(3)/10yr, which was higher than the mean value of most rivers in China. Multiple time scale characteristics existed, which accounted for different aspects of the changes in annual river runoff, and the major periods of the runoff time series were identified as about 28 years, 14 years and 4 years with decreasing levels of fluctuation. The river runoff evolution process was controlled by changes in precipitation to a certain extent, but it was also greatly influenced by human activities. Also, for different time periods and scales, the impacts of climate changes and human activities on annual river runoff evolution occurred at the same time. Changes in the annual river runoff were mainly associated with climate change before the 1980s and with human activities after 1981.
关键词	Multiple Time Scale River Runoff Climate Change Morlet Wavelet Transform Dagujia River
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/4832
专题	水保所知识产出(1956---)
通讯作者	Li, BC
推荐引用方式 GB/T 7714	Liu Delin,Liu Xianzhao,Li Bicheng,et al. Multiple Time Scale Analysis of River Runoff Using Wavelet Transform for Dagujia River Basin, Yantai, China[J]. CHINESE GEOGRAPHICAL SCIENCE,2009,19(2):158-167.
APA	Liu Delin,Liu Xianzhao,Li Bicheng,&Li, BC.(2009).Multiple Time Scale Analysis of River Runoff Using Wavelet Transform for Dagujia River Basin, Yantai, China.CHINESE GEOGRAPHICAL SCIENCE,19(2),158-167.
MLA	Liu Delin,et al."Multiple Time Scale Analysis of River Runoff Using Wavelet Transform for Dagujia River Basin, Yantai, China".CHINESE GEOGRAPHICAL SCIENCE 19.2(2009):158-167.