Contrasting regional discharge evolutions in the Amazon basin (1974–2004)

Simple item page
dc.contributor.authorEspinoza, Jhan Carlo
dc.contributor.authorGuyot, Jean Loup
dc.contributor.authorRonchail, Josyane
dc.contributor.authorCochonneau, Gérard
dc.contributor.authorFilizola, Naziano
dc.contributor.authorFraizy, Pascal
dc.contributor.authorLabat, David
dc.contributor.authorOliveira, Eurides de
dc.contributor.authorOrdoñez, Juan Julio
dc.contributor.authorVauchel, Phillippe
dc.coverage.spatialBrazil
dc.coverage.spatialPeru
dc.coverage.spatialBolivia
dc.date.accessioned2018-07-30T17:30:22Z
dc.date.available2018-07-30T17:30:22Z
dc.date.issued2009-09-15
dc.description.abstractFormer 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.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationEspinoza, J. C., Guyot, J. L., Ronchail, J., Cochonneau, G., Filizola, N., Fraizy, P., ... Vauchel, P. (2009). Contrasting regional discharge evolutions in the Amazon basin (1974–2004).==$Journal of Hydrology, 375$==(3-4), 297-311. https://doi.org/10.1016/j.jhydrol.2009.03.004es_ES
dc.identifier.doihttps://doi.org/10.1016/j.jhydrol.2009.03.004es_ES
dc.identifier.journalJournal of Hydrologyes_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2115
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relation.ispartofurn:issn:0022-1694
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectAmazon basines_ES
dc.subjectDischarge trendes_ES
dc.subjectRainfall and runoff variabilityes_ES
dc.subjectBraziles_ES
dc.subjectPerues_ES
dc.subjectBoliviaes_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.titleContrasting regional discharge evolutions in the Amazon basin (1974–2004)es_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

Files

License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Arbitrados