Mostrar el registro sencillo del ítem Espinoza, Jhan Carlo Guyot, Jean Loup Ronchail, Josyane Cochonneau, Gérard Filizola, Naziano Fraizy, Pascal Labat, David Oliveira, Eurides de Ordoñez, Juan Julio Vauchel, Phillippe 2018-07-30T17:30:22Z 2018-07-30T17:30:22Z 2009-09
dc.identifier.issn 0022-1694
dc.description En: Journal of Hydrology, v. 375, n. 3–4, (September 2009), p. 297-311.
dc.description.abstract "Former hydrological studies in the Amazon Basin generally describe annual discharge variability on the main stem. However, the downstream Amazon River only represents the mean state of the Amazonian hydrological system. This study therefore uses a new data set including daily discharge in 18 sub-basins to analyze the variability of regional extremes in the Amazon basin, after recalling the diversity of the hydrological annual cycles within the Amazon basin. Several statistical tests are applied in order to detect trends and breaks in the time series. We show that during the 1974–2004 period, the stability of the mean discharge on the main stem in Óbidos is explained by opposite regional features that principally involve Andean rivers: a decrease in the low stage runoff, particularly important in the southern regions, and an increase in the high stage runoff in the northwestern region. Both features are observed from the beginning of the nineties. These features are also observed in smaller meridian sub-basins in Peru and Bolivia. Moreover we show that the changes in discharge extremes are related to the regional pluriannual rainfall variability and the associated atmospheric circulation as well as to tropical large-scale climatic indicators." es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Instituto Geofísico del Perú es_ES
dc.relation.uri es_ES
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.rights.uri info:eu-repo/semantics/restrictedAccess es_ES
dc.source Repositorio institucional - IGP es_ES
dc.subject Hidrología--Cuenca del río Amazonas es_ES
dc.subject Cuenca del Río Amazonas--Clima es_ES
dc.subject Variabilidad de las precipitaciones--Región del río Amazonas es_ES
dc.subject Anomalías en las precipitaciones--Región del río Amazonas es_ES
dc.subject Hidrología--Procesamiento de datos es_ES
dc.subject Análisis de series temporales es_ES
dc.title Contrasting regional discharge evolutions in the Amazon basin (1974–2004) es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde Hidrología es_ES
dc.subject.ocde Perú es_ES
dc.subject.ocde Cuencas fluviales es_ES
dc.subject.ocde Clima es_ES
dc.subject.ocde Hidrometría es_ES
dc.subject.ocde Procesamiento de datos es_ES
dc.identifier.journal Journal of Hydrology es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi 10.1016/j.jhydrol.2009.03.004 es_ES




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