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dc.contributor.author Espinoza, Jhan Carlo
dc.contributor.author Ronchail, Josyane
dc.contributor.author Guyot, Jean-Loup
dc.contributor.author Junquas, Clémentine
dc.contributor.author Drapeau, Guillaume
dc.contributor.author Martínez, Jean-Michel
dc.contributor.author Santini, William
dc.contributor.author Vauchel, Philippe
dc.contributor.author Lavado, Waldo
dc.contributor.author Ordoñez, Julio
dc.contributor.author Espinoza Villar, Raúl Arnaldo
dc.date.accessioned 2018-09-20T19:22:24Z
dc.date.available 2018-09-20T19:22:24Z
dc.date.issued 2012-04-19
dc.identifier.govdoc index-oti2018 (NB)
dc.identifier.issn 17489326
dc.identifier.uri http://repositorio.igp.gob.pe/handle/IGP/3020
dc.description En: Environmental Research Letters, v. 7, n. 2 (April 2012), 7 p.
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 Environmental Research Letters es_ES
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.rights.uri http://creativecommons.org/licences/by-nc-nd/2.5/pe/ es_ES
dc.source Repositorio institucional - IGP es_ES
dc.subject Cuenca del Río Amazonas--Clima es_ES
dc.subject Hidrología--Cuenca del Río Amazonas es_ES
dc.subject Variabilidad de las precipitaciones--Región del río Amazonas es_ES
dc.subject Predicción hidrológica--Perú--Amazonía es_ES
dc.subject Inundaciones--Región del río Amazonas es_ES
dc.subject Cambio climático--Perú es_ES
dc.subject Hidrología--Procesamiento de datos es_ES
dc.subject Corriente El Niño es_ES
dc.title From drought to flooding: understanding the abrupt 2010-2011 hydrological annual cycle in the Amazonas River and tributaries es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde Amazonía es_ES
dc.subject.ocde Hidrología es_ES
dc.subject.ocde Climatología es_ES
dc.subject.ocde Precipitación es_ES
dc.subject.ocde Ríos es_ES
dc.subject.ocde Inundaciones es_ES
dc.subject.ocde Cuencas es_ES
dc.identifier.journal Environmental Research Letters es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi 10.1088/1748-9326/7/2/024008 es_ES

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