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Universidade Federal Rural de Pernambuco - UFRPE (2010)

Variabilidade espacial e temporal de atributos hidrológicos para gerenciamento de recursos hídricos em aluvião no semi- árido sob uso agrícola

ANDRADE, T. da S.

Titre : Variabilidade espacial e temporal de atributos hidrológicos para gerenciamento de recursos hídricos em aluvião no semi- árido sob uso agrícola.

Auteur : ANDRADE, T. da S.

Université de soutenance : Universidade Federal Rural de Pernambuco - UFRPE

Grade : Mestre 2010

Résumé
The rivers alluvial valleys, formed by deposition of sediments and eroded materials are predominantly sandy, and usually form good aquifers. In areas where irrigated agriculture is practiced, the recovery of the water alluvial reserves, may occur due to precipitation and / or irrigation. The recharge can be estimated from information of the variation of water depth as piezometers, or whenever there is positive changes in groundwater level is an episode of recharge can be quantified. This paper aims to present the results of monitoring of changes in groundwater levels and estimate the alluvial valley recharge factor by the temporary streams Mimoso, Jatoba and Ipaneminha, from January 2002 to September 2009 in the Pernambuco semiarid. We used monthly data of the piezometric levels monitoring, from January 2002 to October 2009, retrieved from the database of the Water and Soil Laboratory of UFRPE that performs this monitoring since September 2001. From the monitoring of piezometric levels, can be seen that the system responds to significant precipitation events, only the monthly precipitation above 100mm promote recharge and there is no significant difference between charges that occurred in a loam soil and sandy-loam.

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Page publiée le 28 février 2016, mise à jour le 13 juillet 2018