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Recurrence Intervals between Exceedances of Selected River Levels: 3. Estimation and Use of a Prior Distribution
Author(s) -
McGilchrist C. A.,
Chapman T. G.,
Woodyer K. D.
Publication year - 1970
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/wr006i002p00499
Subject(s) - site selection , estimation , distribution (mathematics) , statistics , environmental science , hydrology (agriculture) , mathematics , geology , physics , engineering , mathematical analysis , geotechnical engineering , systems engineering , nuclear physics
The frequency of exceedance of certain identifiable levels in the banks of rivers has been shown to be approximately constant from site to site in New South Wales. The parameters of a model which describe this frequency at a site can therefore be regarded as a random selection from a prior distribution which describes the variations from site to site. By assuming an appropriate form for this prior distribution and estimating its parameters from data at a number of sites, the observed record at a particular site in the same region can be extended.