Mostrar el registro sencillo del ítem Espinoza, Jhan Carlo Ronchail, Josyane Frappart, Frédéric Lavado, Waldo Santini, William Guyot, Jean Loup
dc.coverage.spatial Cuenca del río Amazonas 2018-09-19T18:55:09Z 2018-09-19T18:55:09Z 2013-06
dc.identifier.citation Espinoza, J. C., Ronchail, J., Frappart, F., Lavado, W., Santini, W., & Guyot, J. L. (2013). The major floods in the Amazonas River and tributaries (Western Amazon basin) during the 1970–2012 period: a focus on the 2012 flood.==$Journal of Hydrometeorology, 14,$==1000-1008. es_ES
dc.identifier.govdoc index-oti2018
dc.description.abstract In this work, the authors analyze the origin of the extreme floods in the Peruvian Amazonas River during the 1970-2012 period, focusing on the recent April 2012 flooding (55 400 m(³) s(⁻¹)). Several hydrological variables, such as rainfall, terrestrial water storage, and discharge, point out that the unprecedented 2012 flood is mainly related to an early and abundant wet season over the north of the basin. Thus, the peak of the Maranon River, the northern contributor of the Amazonas, occurred sooner than usual (in April instead of May), coinciding with the peak of the Ucayali River, the southern contributor. This concomitance caused a dramatic flood downstream in the Peruvian Amazonas. These results are compared to the amplitude and timing of the three most severe extreme floods (1970-2011). The analysis of the climatic features related to the most important floods (1986, 1993, 1999, and 2012) suggests that they are characterized by a La Nina event, which originates a geopotential height wave train near the ground, with positive anomalies over the subtropical South and North Pacific and Atlantic and over southeastern South America. These patterns contribute to 1) the origin of an abundant humidity transport flux from the tropical North Atlantic and the Caribbean Sea toward the northwestern Amazon and 2) the maintenance of the monsoon flux over this region. They both favor a strong convergence of humidity in the northern Amazonas basin. Finally, the authors suggest that the intensity of floods is more likely related to an early La Nina event (as observed during the 2011/12 season), early rainfall, and simultaneous peaks of both tributaries of the Amazonas River. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Meteorological Society es_ES
dc.relation.ispartof urn:issn:1525-7541
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Amazon region es_ES
dc.subject Rivers es_ES
dc.subject South America es_ES
dc.subject Atmospheric circulation es_ES
dc.subject ENSO es_ES
dc.subject Flood events es_ES
dc.title The major floods in the Amazonas River and tributaries (Western Amazon Basin) during the 1970-2012 period: a focus on the 2012 flood 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 Journal of Hydrometeorology es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




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