RODRIGUES, E. M.; RODRIGUES, Erimágna de Morais.
Résumé:
Brazil's Northeast region, especially in semi-arid portion periodically is affected by the
occurrence of droughts with partial or total losses in the agricultural sector, which is almost
subsistence. To carry out this study rainfall data were selected registered in rainfall stations
generated by SUDENE and AESA, between the period 1940 to 2014. It was using position
measurements and dispersion, graphical analysis and identified the relative influence of the
presence of events El Niño and La Niña. To analyze the interaction man / environment
used the geoenvironmental theory Geosystems. The results show that in the analyzed
period there was a higher incidence of normal years, where the rainfall recorded was on
average, which is around 400 mm / year, and La-Niña event, where the rainfall exceeds
this volume, reaching 1300 mm / year, as the county of Taperoá (Western Cariri). And the
results indicate that the Eastern Cariri has a water deficit, when related to Western Cariri,
this is due among other factors, the altitude and orographic position to windward of the
micro-region.