Regional rainfall intensity formulas based on scaling property of rainfall

This work developed regional Intensity–Duration–Frequency (IDF) formulas for non-recording sites based on the scaling theory. Forty-six recording raingauges over northern Taiwan provide the data set for analysis. The temporal scaling properties of annual maximum rainfall series for various durations...

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Bibliographic Details
Published in:Journal of hydrology (Amsterdam) 2004-08, Vol.295 (1), p.108-123
Main Authors: Yu, Pao-Shan, Yang, Tao-Chang, Lin, Chin-Sheng
Format: Article
Language:English
Subjects:
Earth sciences
Earth, ocean, space
Exact sciences and technology
geographical variation
Homogeneous regions
Hydrology
Hydrology. Hydrogeology
Intensit-Duration-Frequency formulas
mathematics and statistics
meteorological data
Non-recording sites
rain
Rainfall intensity formulas
Regional analysis
Scaling theory
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Summary:This work developed regional Intensity–Duration–Frequency (IDF) formulas for non-recording sites based on the scaling theory. Forty-six recording raingauges over northern Taiwan provide the data set for analysis. The temporal scaling properties of annual maximum rainfall series for various durations were first investigated. The hypothesis of piecewise simple scaling combined with Gumbel distribution was used to develop the IDF scaling formulas. Since most of parameters in IDF scaling formulas can be estimated from the annual 1-day maximum series, these parameters were regionalized based on the relationship between the scaling exponent and the average of annual 1-day maximum rainfall. Three scaling homogeneous regions were classified by different scaling regimes and regional IDF scaling formulas were developed in each region. The analyzed results reveal that the regional IDF scaling formulas proposed herein resulted in reasonable simulations and verifications.
ISSN:0022-1694
1879-2707
DOI:10.1016/j.jhydrol.2004.03.003