ICES 2016 - M. Heriyanto & W. Srigutomo.pdf (1.27 MB)
1-D DC Resistivity Inversion Using Singular Value Decomposition and Levenberg-Marquardt’s Inversion Schemes
presentation
posted on 2017-02-13, 11:17 authored by Mohammad HeriyantoMohammad Heriyanto, Wahyu SrigutomoExploration
of natural or energy resources requires geophysical survey to determine
the subsurface structure, such as DC resistivity method. In this
research, field and synthetic data were used using Schlumberger
configuration. One-dimensional (1-D) DC resistivity inversion was
carried out using Singular Value Decomposition (SVD) and
Levenberg-Marquardt (LM) techniques to obtain layered resistivity
structure. We have developed software to perform both inversion methods
accompanied by a user-friendly interface. Both of the methods were
compared one another to determine the number of iteration, robust to
noise, elapsed time of computation, and inversion results. SVD inversion
generated faster process and better results than LM did. The inversion
showed both of these methods were appropriate to interpret subsurface
resistivity structure.