TDEM survey in an area of seismicity induced by water wells in Paraná sedimentary basin, Northern São Paulo State, Brazil

2D TEM Modeling for a Hydrogeological Study in the Paraná Sedimentary Basin, Brazil

“…1D geoelectrical models obtained from the interpretation of 86 TEM soundings acquired from this same area were presented in Porsani et al [17]. According to the authors, the results revealed the general geoelectrical stratigraphy at…”

“…This seismic activity is concentrated mainly at two areas: Andes, where the activity was first noticed and is more frequent, and Botafogo [17] [24]. Both seismic areas are shown in Figure 1.…”

“…Geologically, the area is characterized by sandy sediments of the Adamantina For- by Porsani et al [17].…”

“…A study about the effects of urban noise was carried out by Porsani et al [16], where TEM soundings with different electromagnetic moments were compared in order to evaluate the applicability of the method in similar environments. Porsani et al [17] performed 86 central-loop TEM soundings over the Paraná Basin, close to the city of Bebedouro, in order to identify fractured zones with groundwater inside the basalt layer of the Serra Geral Formation using 1D geoelectrical models and correlated those fractured zones to seismicity events registered at the area.…”

“…To achieve this goal, nine TEM soundings were analyzed through 2D modeling. They are shown in Figure 2, which also presents the general topography measured with a handheld Garmin GPS system at each of those 86 TEM sounding points used by Porsani et al [17]. These nine soundings were selected because their 1D geoelectrical models did not match with lithological information from water wells next to them (for example, W07 and W10, in Figure 2) or because it was not possible to fit the data curve using a simple 1D…”