Basin-scale analysis of rainfall and runoff in Peru (1969–2004): Pacific, Titicaca and Amazonas drainages

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dc.contributor.authorLavado Casimiro, Waldo Sven
dc.contributor.authorRonchail, Josyane
dc.contributor.authorLabat, David
dc.contributor.authorEspinoza, Jhan Carlo
dc.contributor.authorGuyot, Jean-Loup
dc.coverage.spatialCuenca del Río Amazonas
dc.coverage.spatialLago Titicaca
dc.coverage.spatialPerú
dc.date.accessioned2018-09-21T11:40:30Z
dc.date.available2018-09-21T11:40:30Z
dc.date.issued2012-04-03
dc.description.abstractAccording to the Peruvian agricultural ministry, the Pacific watersheds where the great cities and intense farming are located only benefit from 1% of the available freshwater in Peru. Hence a thorough knowledge of the hydrology of this region is of particular importance. In the paper, analysis of this region and of the two other main Peruvian drainages, the Titicaca and Amazonas are reported. Rainfall and runoff data collected by the Peruvian National Service of Meteorology and Hydrology (SENAMHI) and controlled under the Hydrogeodynamics of the Amazon Basin (HyBAm) project is the basis of this basin-scale study that covers the 1969–2004 period. Beyond the strong contrasting rainfall conditions that differentiate the dry coastal basins and the wet eastern lowlands, details are given about in situ runoff and per basin rainfall distribution in these regions, and about their different altitude–rainfall relationships. Rainfall and runoff variability is strong in the coastal basins at seasonal and inter-annual time scales, and related to extreme El Niño events in the Pacific Ocean. However, rainfall and runoff are more regular in the Andes and Amazonas at the inter-annual time scale. Warm sea-surface temperatures in the northern tropical Atlantic tend to produce drought in the southern Andes basins. Moreover, significant trends and change-points are observed in the runoff data of Amazonas basins where rainfall and runoff decrease, especially after the mid-1980s and during the low-stage season. Almost all the coastal basins show some change in minimum runoff during the last 35 years while no change is observed in rainfall. This means that human activity may have changed runoff in this region of Peru, but this hypothesis deserves more study.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationLavado, W. S., Ronchail, J., Labat, D., Espinoza, J. C., & Guyot, J. L. (2012). Basin-scale analysis of rainfall and runoff in Peru (1969–2004): Pacific, Titicaca and Amazonas drainages.==$Hydrological Sciences Journal, 57$==(4), 625-642. https://doi.org/10.1080/02626667.2012.672985es_ES
dc.identifier.doihttps://doi.org/10.1080/02626667.2012.672985es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalHydrological Sciences Journales_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/3026
dc.language.isoenges_ES
dc.publisherTaylor & Francises_ES
dc.relation.ispartofurn:issn:0262-6667
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectRainfalles_ES
dc.subjectRunoffes_ES
dc.subjectTiticaca basines_ES
dc.subjectAmazones_ES
dc.subjectPacific coastes_ES
dc.subjectTropical Atlantices_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.00es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.09es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.11es_ES
dc.titleBasin-scale analysis of rainfall and runoff in Peru (1969–2004): Pacific, Titicaca and Amazonas drainageses_ES
dc.title.alternativeAnalyse de la pluie et de l'écoulement au Pérou (1969–2004) Bassins versants du Pacifique, du Lac Titicaca et de l'Amazonees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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