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The accuracy of the prediction of floods of high return period
Author(s) -
Nash J. E.,
Amorocho J.
Publication year - 1966
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr002i002p00191
Subject(s) - return period , statistics , flood myth , mathematics , sample (material) , exponential distribution , exponential function , sample size determination , econometrics , environmental science , hydrology (agriculture) , geology , geography , physics , mathematical analysis , geotechnical engineering , thermodynamics , archaeology
Expressions in terms of sample size and parameters of the probability distribution are obtained for the standard errors of sample estimates of flood magnitudes corresponding to given return periods for normal and double exponential universes. These errors are shown to converge toward fixed proportions of the estimates for very high return periods. (Key words: Floods; frequency analysis; statistics.)