High Resolution Time-domain Induced Polarization Tomography with Merging Data Levels by Two Different Optimized Arrays for Slope Monitoring Study

 

Andy A. Bery

Geophysics Section, School of Physics, Universiti Sains Malaysia, 11800 Penang, Malaysia
Corresponding aut
e-mail: andersonbery@yahoo.com.my

Rosli Saad

Geophysics Section, School of Physics, Universiti Sains Malaysia, 11800 Penang, Malaysia

 

 ABSTRACT

In this paper, we present the results of electrical resistivity and induced polarization real in-field data collected using wenner-schlumberger and pole-dipole arrays. The study was conducted at Minden site in Penang, Malaysia. Inversion results from computer suggested that optimized wenner-schlumberger and pole-dipole arrays would be equally effective but the merge data levels technique for both arrays would able to provide high resolution at imaging slope area. Our in-field data results showed that the two arrays imaged the subsurface for slope monitoring equally well. When in-field data levels from these two different arrays were merged and analyzed using 2-D inversion, however, the merging data levels using two different arrays was able to resolve the subsurface characterizations. Because the merging data levels using two different arrays requires roughly two times as measurement per line, we conclude that this technique is preferable for environmental geophysics than single array only when the high improvement in resolution at sensitivity, horizontal coverage, signal strength and investigation depth is more important than rapid data acquisition.

Keywords: Induced polarization; Slope; High resolution; Merging data levels.

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