GPR 3D PROFILE OF THE ADEQUATENESS OF UNDERGROUND DAMS IN A SUB-WATERSHED OF THE BRAZILIAN SEMIARID

Authors

  • Alexandre de Oliveira Lima Departmnent of Environmental Management, Universidade do Estado do Rio Grande do Norte, Mossoró, RN
  • Francisco Pinheiro Lima-Filho Department of Geology, Universidade Federal do Rio Grande do Norte, Natal, RN
  • Nildo Silva Dias Center of Agrarian Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • João Andrade dos Reis Júnior Department of Agrarian Sciences, Universidade Federal Rural da Amazônia, Parauapebas, PA
  • Anderson de Medeiros Sousa Instituto Nacional de Colonização e Reforma Agrária, Natal, RN

DOI:

https://doi.org/10.1590/1983-21252018v31n230rc

Keywords:

Ground-penetrating radar. Water resources. Strategies of coexistence in the semiarid.

Abstract

The conventional method monitoring and adequateness of underground dams requires invasive investigatory actions with in their interior structure and only provides specific information for small volumes. On the contrary, application of non-invasive sensing techniques, such as ground penetrating radar (GPR), makes it possible to investigate and explore underground without affecting their structure. A GRP 3D profile was acquired with the aim to allot and monitor an underground dam in the Brazilian semiarid region in the alluvial sub-watershed of the Riacho Pau Lavrado in the Sertão Central de Lajes region of the state of Rio Grande do Norte in Brazil. The GPR profile records were acquired along an alluvial section, processed using the Reflex 5 software and exported into the Opendetec 4.4.0 software in order to obtain a virtual 3D model. The GPR 3D profile of the alluvial deposits shows irregularities of the crystalline basement and external topographical surface (soil). The interpretation of the alluvial GPR profile allows precise adequateness of the underground dam, which supports an increase in the area of hydric accumulation and promotes low-cost building due to the allocation selected with minor sedimentation.

Author Biographies

  • Alexandre de Oliveira Lima, Departmnent of Environmental Management, Universidade do Estado do Rio Grande do Norte, Mossoró, RN
    Geodynamics and Geophysics. Federal University of Rio Grande do Norte-Brazil.
  • Francisco Pinheiro Lima-Filho, Department of Geology, Universidade Federal do Rio Grande do Norte, Natal, RN
    Geodynamics and Geophysics. Federal University of Rio Grande do Norte-Brazil.
  • Nildo Silva Dias, Center of Agrarian Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN
    Departamento de Ciências Ambientais e Tecnológicas/Centro de Engenharia/UFERSA
  • João Andrade dos Reis Júnior, Department of Agrarian Sciences, Universidade Federal Rural da Amazônia, Parauapebas, PA
    Federal Rural University of the Amazônia – Parauapebas (PA), Amazonas, Brazil
  • Anderson de Medeiros Sousa, Instituto Nacional de Colonização e Reforma Agrária, Natal, RN
    Instituto Federal da Paraíba – IFPB Campus Picuí, PB.

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Published

06-04-2018

Issue

Section

Technical Note