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Comparing Methods for the Regionalization of Intensity−Duration−Frequency (IDF) Curve Parameters in Sparsely-Gauged and Ungauged Areas of Central Chile

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dc.contributor.authorSangüesa, Claudia
dc.contributor.authorPizarro, Roberto
dc.contributor.authorIngram, Ben
dc.contributor.authorIbáñez, Alfredo
dc.contributor.authorRivera, Diego
dc.contributor.authorGarcía-Chevesich, Pablo
dc.contributor.authorPino, Juan
dc.contributor.authorPérez, Felipe
dc.contributor.authorBalocchi, Francisco
dc.contributor.authorPeña, Francisco
dc.date.accessioned2024-04-16T16:29:46Z
dc.date.available2024-04-16T16:29:46Z
dc.date.issued2023
dc.description.abstractEstimating intensity−duration−frequency (IDF) curves requires local historical information of precipitation intensity. When such information is unavailable, as in areas without rain gauges, it is necessary to consider other methods to estimate curve parameters. In this study, three methods were explored to estimate IDF curves in ungauged areas: Kriging (KG), Inverse Distance Weighting (IDW), and Storm Index (SI). To test the viability of these methods, historical data collected from 31 rain gauges distributed in central Chile, 35° S to 38° S, are used. As a result of the reduced number of rain gauges to evaluate the performance of each method, we used LOOCV (Leaving One Out Cross Validation). The results indicate that KG was limited due to the sparse distribution of rain gauges in central Chile. SI (a linear scaling method) showed the smallest prediction error in all of the ungauged locations, and outperformed both KG and IDW. However, the SI method does not provide estimates of uncertainty, as is possible with KG. The simplicity of SI renders it a viable method for extrapolating IDF curves to locations without data in the central zone of Chile
dc.description.sponsorshipCentro de Recursos Hídricos para la Agricultura y la Minería, CRHIAM
dc.description.versionVersión publicadaes
dc.format.extent13 p.es
dc.identifier.citationSangüesa C, Pizarro R, Ingram B, Ibáñez A, Rivera D, García-Chevesich P, Pino J, Pérez F, Balocchi F, Peña F. Comparing Methods for the Regionalization of Intensity−Duration−Frequency (IDF) Curve Parameters in Sparsely-Gauged and Ungauged Areas of Central Chile. Hydrology. 2023; 10(9):179.
dc.identifier.doi10.3390/hydrology10090179en
dc.identifier.issn2306-5338
dc.identifier.urihttps://hdl.handle.net/11447/8625
dc.language.isoen
dc.relation.projectANID/FONDAP/15130015es
dc.rightsAtribución-NoComercial-CompartirIgual 3.0 Chile (CC BY-NC-SA 3.0 CL)
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/cl/
dc.sourceHydrologyen
dc.subjectRegionalization IDF curvesen
dc.subjectIDF Krigingen
dc.subjectIDW IDF curvesen
dc.subjectChile IDF curvesen
dc.titleComparing Methods for the Regionalization of Intensity−Duration−Frequency (IDF) Curve Parameters in Sparsely-Gauged and Ungauged Areas of Central Chile
dc.typeArticle
dcterms.accessRightsAcceso abiertoes
dspace.entity.typePublication

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