Resumo

TORO-GUERRERO, Francisco José Del  e  KRETZSCHMAR, Thomas Gunter. Identifying historical drought periods in a region of mediterranian semiarid climate type. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.6, pp.1311-1320. ISSN 2007-0934.

This study was conducted evaluating historical periods of drought that have affected the Valle de Guadalupe in Baja California, Mexico, which belongs to the sub-basin that has the same name. In this region are carried out major agricultural activities like growing olives, vegetables, aromatic herbs and table grapes, being the most representative grape production to produce wine. Being a semiarid surface water resource is limited, therefore all water demand is provided by the Guadalupe Aquifer. To fulfill the objective of this study it was used the calculation of the reconnaissance drought index (IRS to carry out the historical annual classification, severity, duration and frequency of meteorological drought. It was found which have been the most representative periods that have affected the region (1999 - 2009) and concludes that the results generated can be related to the decrease in volume of aquifer recharge.

Palavras-chave : duration; drought index; frequency; intensity; Valle de Guadalupe.