3D subsurface resistivity imaging using a modified roll-along measurement technique


GÜNDOĞDU N. Y., Karakulak G., CANDANSAYAR M. E.

26th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience 2020, Virtual, Online, 7 - 08 Aralık 2020 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.3997/2214-4609.202020139
  • Basıldığı Şehir: Virtual, Online
  • Ankara Üniversitesi Adresli: Evet

Özet

© 2019 EAGE.The roll-along measurement technique can be used as 3D acquisition procedure in electrical resistivity tomography. The total number of electrode combinations is very large in this technique. We suggest a modified roll-along measurement technique in this study. The parallel lines are separated as current and potential in this technique. Moreover, measurements are carried between the current line and its neighbour potential lines. The standard roll-along commands include both cross-line and in-line measurements. Whereas, there is no in-line measurements in technique suggested. We compared our data set with other data sets which were calculated standard roll-along and in-line (2D parallel) using a synthetic model application. In our synthetic data example (19x11 electrodes), the number of data is about 4.4 times less in the modified roll-along technique than in the standard roll-along technique. The inversion results demonstrate that the subsurface structures were better recovered in terms of their locations, upper and bottom depths, resistivities.