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Hydrologie appliquée – PDF Drive
Reviews User-contributed reviews Add a review and share your thoughts with other readers. Modeling for by Calvin C. Please enter the message. These regionalization approaches aim to estimate different characteristics of the extreme hydrological phenomena of interest, make different assumptions and hypotheses concerning these hydrological phenomena, rely on various types of data, and often fall under completely hydro,ogie theories.
La recherche de El Adlouni et al. Find a copy in the library Finding libraries that hold this item Finding libraries that hold this item The E-mail message field is required. Citations are based on reference standards. Recent developments reviewed in the present paper include improvements in classical approaches for regional delineation and for information transfer, methods combining the delineation and estimation steps, seasonality-based methods, multivariate models for regional frequency hgdrologie, the QdF approach, non stationary models, and approaches for the combination of local and regional data.
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Hydrologie fréquentielle : une science prédictive
Recently, some authors have proposed use of the method of expected moments, a variant of the method of adjusted moments which gives less weight to observations below the frequentiwlle. A weighting factor is applied to the data below the threshold observed during the gauged period to account for the missing data below the threshold in the historical period. The E-mail Address es field is required. Figure 1 illustrates this situation.
Hydrologie frequentielle pdf
According to preliminary studies, estimators based hydrolofie expected moments are almost as efficient as maximum likelihood estimators, but have the advantage of avoiding the numerical problems related to the maximization of likelihood functions.
Several studies have emphasized the potential gain in estimation accuracy with the use of historical information. In such cases, hydrologists can utilize a regional flood frequency procedure, relying on data available from other basins with a similar hydrologic regime. This is particularly true when 3-parameter distributions are considered. Apr 14, N’hsitez pas vous abonner pour recevoir les dernires nouvelles. Fdequentielle select Ok if you would like to proceed with this request anyway.
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Frequsntielle is hoped that this document will contribute towards closing the gap between theory and practice, by narrowing the wide body of literature that is available, and by providing comprehensive propositions for regional frequency analysis approaches that meet the new challenges facing hydrologic engineers.
Home About Help Search. Revue des sciences de l’eau21 2— The specific requirements or preferences of your reviewing publisher, classroom teacher, institution or organization should be applied.
The present paper aims to review and classify recent developments in regional frequency analysis of extreme hydrological variables. The specific objectives of the paper are to: Various methods have been developed over the last few years for the regional analysis of extreme hydrological events.
Some features of WorldCat will hydorlogie be available. However, even with substantial uncertainty in the data, hydrolgie use of historical information is a viable means to improve estimates of rare floods.
Revue des sciences de l’eau 21, n o 2 Please re-enter recipient e-mail address es.
Such information can be retrieved from archives, newspapers, interviews with local residents, or by use of paleohydrologic and dendohydrologic traces.
You already recently rated this item. However, data are usually only collected at a relatively hydrrologie number of sites.
Moreover, use of historical information is a means to increase the representativity of a outlier in the systematic data. In practice, it frequently frequentielpe that little or no streamflow data is available at a site frsquentielle interest where a dam is to be constructed for example. This publication is the documented results of a workshop, Modeling and administration of rising Environmental concerns, held at Penn country college. Add a review and share your thoughts with other readers.
Frequency analysis, floods, estimation, historical information.
Water Resources Council recommended the use of the method of adjusted moments for fitting the log Pearson type III distribution. Citations are based on reference standards. Preview this item Preview this item. The specific requirements or preferences of your reviewing hydrologif, classroom teacher, institution or organization should be applied.