期刊
JOURNAL OF HYDROLOGIC ENGINEERING
卷 16, 期 7, 页码 598-607出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)HE.1943-5584.0000350
关键词
Hydrological extreme; 7-day high flow; 7-day low flow; Copula function; Statistical hydrological behaviors
资金
- National Natural Science Foundation of China [41071020]
- Guangdong Science and Technology Department [2010B050800001]
- Sun Yat-sen University [2009-37000-1132381]
- Key National Natural Science Foundation of China [50839005]
- Research Grants Council of the Hong Kong Special Administrative Region, China [CUHK405308]
- Faculty of Social Science, Chinese University of Hong Kong [2021022]
It is believed that the currently increasing temperature, also known as global warming, has altered the hydrological cycle and thus the hydrometeorological extremes become frequent. In this study, the authors analyze hydrological extremes defined by 7-day high flow and low flow of the Pearl River Basin by using a copula family. The results indicate that the concurrent occurrence of extreme high and low flow is of small probability. It implies that the probability is small that the lower Pearl River Basin is attacked by heavy droughts or floods because of the combined effects of high or low flow of the two major tributaries of the Pearl River, i.e., the West and North Rivers. Therefore, the authors can conclude that the joint probability of hydrological extremes of two tributaries of a river basin could be small, albeit the occurrence of hydrological extremes of an individual river is of large probability. Besides, the results of this study also reveal increasing 7-day low flow in winter, which should be because of seasonal shifts of precipitation on the basis of the previous studies. The results of this study mean much for the sound human understanding of statistical behaviors of hydrological extremes in humid regions, and also for effective water resource management and development of human mitigation to the natural hazards in the changing environment. DOI: 10.1061/(ASCE)HE.1943-5584.0000350. (C) 2011 American Society of Civil Engineers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据