Mostrar el registro sencillo del ítem Espinoza, Jhan Carlo Ronchail, Josyane Guyot, Jean-Loup Junquas, Clémentine Drapeau, Guillaume Martínez, Jean-Michel Santini, William Vauchel, Philippe Lavado, Waldo Ordoñez, Julio Espinoza Villar, Raúl Arnaldo
dc.coverage.spatial Cuenca del río Amazonas
dc.coverage.spatial Amazonía 2018-09-20T19:22:24Z 2018-09-20T19:22:24Z 2012-04-19
dc.identifier.citation Espinoza, J. C., Ronchail, J., Guyot, J. L., Junquas, C., Drapeau, G., Martinez, J. M., ... Espinoza, R. (2012). From drought to flooding: understanding the abrupt 2010–11 hydrological annual cycle in the Amazonas River and tributaries.==$Environmental Research Letters, 7$==(2), 024008. es_ES
dc.identifier.govdoc index-oti2018
dc.description.abstract In this work we document and analyze the hydrological annual cycles characterized by a rapid transition between low and high flows in the Amazonas River (Peruvian Amazon) and we show how these events, which may impact vulnerable riverside residents, are related to regional climate variability. Our analysis is based on comprehensive discharge, rainfall and average suspended sediment data sets. Particular attention is paid to the 2010–11 hydrological year, when an unprecedented abrupt transition from the extreme September 2010 drought (8300 m3 s−1) to one of the four highest discharges in April 2011 (49 500 m3 s−1) was recorded at Tamshiyacu (Amazonas River). This unusual transition is also observed in average suspended sediments. Years with a rapid increase in discharge are characterized by negative sea surface temperature anomalies in the central equatorial Pacific during austral summer, corresponding to a La Niña-like mode. It originates a geopotential height wave train over the subtropical South Pacific and southeastern South America, with a negative anomaly along the southern Amazon and the southeastern South Atlantic convergence zone region. As a consequence, the monsoon flux is retained over the Amazon and a strong convergence of humidity occurs in the Peruvian Amazon basin, favoring high rainfall and discharge. These features are also reported during the 2010–11 austral summer, when an intense La Niña event characterized the equatorial Pacific. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher IOP Publishing es_ES
dc.relation.ispartof urn:issn:1748-9326
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.rights.uri es_ES
dc.subject Solimoes River es_ES
dc.subject Floods es_ES
dc.subject Amazon basin es_ES
dc.subject Peru es_ES
dc.subject Discharge variability es_ES
dc.subject ENSO es_ES
dc.title From drought to flooding: understanding the abrupt 2010-11 hydrological annual cycle in the Amazonas River and tributaries es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde es_ES
dc.subject.ocde es_ES
dc.subject.ocde es_ES
dc.identifier.journal Environmental Research Letters es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




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