Análise Geofísica das Características Hidráulicas da Falha de Salvador na Região de Arembepe - Bahia

The hydraulic characteristics of the Salvador fault zone along the eastern boundary of the Recôncavo basin were inferred from sub-surface geologic and geophysical data. This fault put in direct contact the shaly sandstones of the São Sebastião Formation and the metamorphics rocks of the crystalline basement. The studied area is part the coastal zone of Salvador, included in the Camaçari country and extending from the Jauá beach to the Arembepe village.<br>Two geophysical methods were employed to evaluate the waters resources of the area. A total field magnetic map allows to recognize the underground fresh crystalline basement, whereas resistivity soundings were used to define a geo-structural model for the whole area. Sixteen magnetometric profiles and fifty two vertical electrical soundings were distributed in the area. The results allows to map the aquifer geometry and to infer some of their hydraulic characteristics, as well as to define the depth of the water level, and the presence of a fresh water - salt water interface close to the beach.