Risk of scarcity of monthly precipitation and streamflows in semiarid regions

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dc.contributor.authorFernandez, B
dc.contributor.authorVergara, A
dc.date.accessioned2025-01-21T01:32:28Z
dc.date.available2025-01-21T01:32:28Z
dc.date.issued1998
dc.description.abstractIn semiarid regions, periods of one to several consecutive months of scarcity of precipitation or low flow rates in rivers and streams frequently occur. In these regions, scarce precipitation considerably affects grazing activities od rangelands, irrigation agriculture, and flora and fauna of surface stream environments. This paper is concerned with estimating probabilities of occurrence for such events and associated risks by using statistical information provided by monthly precipitation and streamflow series. Conventional return period and risk concepts as customarily used in hydrology are applied, and events of interest such as meteorological droughts are considered by using monthly precipitation as a time-related series of supply, thereafter addressing hydrological droughts in terms of streamflow supply. For these two kinds of events, periodic situations of time-independent phenomena are considered for the case of precipitation, with time-dependent phenomena considered for streamflows. The method is applied to the semiarid portion of Chile to calculate probabilities of occurrence of specific numbers of consecutive months with no significant precipitation, or now rates insufficient to meet stream ecological needs.
dc.fuente.origenWOS
dc.identifier.issn0262-6667
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97268
dc.identifier.wosidWOS:000076435900007
dc.issue.numero5
dc.language.isoen
dc.pagina.final773
dc.pagina.inicio759
dc.revistaHydrological sciences journal-journal des sciences hydrologiques
dc.rightsacceso restringido
dc.subject.ods06 Clean Water and Sanitation
dc.subject.ods13 Climate Action
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa06 Agua limpia y saneamiento
dc.subject.odspa13 Acción por el clima
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleRisk of scarcity of monthly precipitation and streamflows in semiarid regions
dc.typeartículo
dc.volumen43
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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