Geoelectrical characterization with 1D VES/TDEM joint inversion in Urupes-SP region, Parana Basin: Applications to hydrogeology

Author(s):Show less -

Leite, David Nakamura ^[1] ; Bortolozo, Cassiano Antonio ^[1] ; Porsani, Jorge Luis ^[1] ; Couto, Jr., Marco Antonio ^{[1, 2]} ; Realpe Campana, Julian David ^[1] ; Monteiro dos Santos, Fernando Acacio ^[3] ; Rangel, Rodrigo Correa ^[1] ; Hamada, Luiz Rodrigo ^[1] ; Sifontes, Rimary Valera ^[1] ; de Oliveira, Gabriela Serejo ^[1] ; Stangari, Marcelo Cesar ^[1]

Affiliation

^[1] Univ Sao Paulo, Inst Astron Geophys & Atmospher Sci IAG, Dept Geophys, Sao Paulo - Brazil

^[2] CPRM Brazilian Geol Survey, SUREG BH, Belo Horizonte, MG - Brazil

^[3] Univ Lisbon, Don Luiz Inst IDL, Lisbon - Portugal

• Document type: Journal article
• Source: JOURNAL OF APPLIED GEOPHYSICS; v. 151, p. 205-220, APR 2018.
• Web of Science Citations: 1

Abstract

Although Brazil is well known by the large rivers and the Amazon Rain Forest most cities do not have access to sufficient quantities of surface water to supply the population. Because of this 61% of Brazilian population (IBGE, 2003) depends on groundwater resources. In order to help the conscious exploration of this resource in Urupes city (Sao Paulo State) which is characterized by problems of lack of water, this research applied the transient electromagnetic method (TDEM) and Vertical Electrical Sounding (VES) for the geoelectrical characterization of the interest region. So, the objective of this work was increase the hydrogeological basis for groundwater exploitation of Bauru sedimentary aquifer and Serra Geral fractured aquifer (Parana Basin). A total of 23 TDEM and 15 VES soundings were conducted during the years of 2009, 2011 and 2012. In addition, 10 pairs of VES/IDEM soundings were acquired with coincident centers to be able to perform the joint inversion. The joint inversion technique is a promising tool, which enables to get the best of both methods, where the VES add the shallow information and TDEM the deeper one. In this work, the individual and joint inversions were performed using the ``Curupira{''} software. After data process and inversion, the results were interpreted based on geological well information provided by the Department of Water and Electrical Power (DAEE) and the Brazilian Geological Survey (CPRM) which enabled to estimate favorable places to exploitation of water in Bauru and Serra Geral aquifers. For the Baum aquifer, the results suggest areas where thickness exceeds 100 m. In these areas, the resistivity calculated was about 20 Omega center dot m. Therefore, the sediments have been interpreted as saturated sandy clay. In the basalt layer of Serra Geral Formation, the suggested locations present resistivity values <100 Omega center dot m at similar to 200 m depth. The indicated places in sedimentary aquifer and the locations in the fractured aquifer will may show alternative sources for groundwater exploitation and water supply for Urupes city. (C) 2018 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 12/15338-4 - Mapping of fractured aquifers in basalt of the Serra Geral Formation in northwestern region of the São Paulo State, using 1D and 2D joint inversion of resistivity data (VES and ES) and time domain electromagnetic soundings (TDEM)
• Grantee: Jorge Luís Porsani
• Support Opportunities: Regular Research Grants
• FAPESP's process: 11/06404-0 - 1D and 2D joint inversion of resistivity and TDEM data for hydrogeology studies in the Paraná basin
• Grantee: Cassiano Antonio Bortolozo
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 09/08466-3 - Geoelectric characterization of fractured aquifers in basalt in the region of Bebedouro, SP, by using joint inversion of SEVs and TDEM soundings
• Grantee: Jorge Luís Porsani
• Support Opportunities: Regular Research Grants
• FAPESP's process: 12/07385-2 - Hydrogeoelectrical Characterization in the Termas de Ibirá region, Paraná Basin, by using 1D Joint Inversion of TDEM and VES Soundings.
• Grantee: Marco Antonio Couto Jr
• Support Opportunities: Scholarships in Brazil - Master