CONSTRAINED SCALING APPROACH FOR DESIGN RAINFALL ESTIMATION
Applications of scale-invariant ideas have been one of the most exciting areas of research in hydrology. The past studies showed positive evidences regarding the scale-invariant behavior in hydrological processes. In this paper, the scale-invariant approach found its way in frequency analysis for design rainfall depth estimation. In practice, intersections among design rainfalls for different durations under a same return period often occurs, which may provide wrong information in engineering planning and design. Furthermore, frequency analysis is currently regarded as inappropriate due to its lack of physical principles. In this paper, the scale-invariant approach is proposed, coupled with a constrained regression analysis, to make corrections on the possible intersections. The aim of this paper is to investigate the feasibility of applying such approach to deal with the intersection problem. A Hong Kong case study is used to demonstrate the application. The results are interpreted as more reasonable than those based on frequency analysis and are capable of providing substantial support for engineering planning, design, and management purpose when only a small sample of data are available.
frequency analysis IDF or DDF scale-invariant property CRA
YuePing Xu YeouKoung Tung Feifeng Cao Yangbin Tong
Institute of Hydrology and Water Resources, Depart of Civil Engineering, Zhejiang University, Hangzh Civil Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
35-39
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）