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Inversion of Schlumberger Resistivity Sounding Data from the Critically Dynamic Koyna Region Using the Hybrid Monte Carlo-based Neural Network Approach : Volume 18, Issue 2 (09/03/2011)

By Maiti, S.

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Book Id: WPLBN0003983860
Format Type: PDF Article :
File Size: Pages 14
Reproduction Date: 2015

Title: Inversion of Schlumberger Resistivity Sounding Data from the Critically Dynamic Koyna Region Using the Hybrid Monte Carlo-based Neural Network Approach : Volume 18, Issue 2 (09/03/2011)  
Author: Maiti, S.
Volume: Vol. 18, Issue 2
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Erram, V. C., Maiti, S., Gupta, G., & Tiwari, R. K. (2011). Inversion of Schlumberger Resistivity Sounding Data from the Critically Dynamic Koyna Region Using the Hybrid Monte Carlo-based Neural Network Approach : Volume 18, Issue 2 (09/03/2011). Retrieved from

Description: Indian Institute of Geomagnetism (DST), Navi Mumbai-410218, India. Koyna region is well-known for its triggered seismic activities since the hazardous earthquake of M=6.3 occurred around the Koyna reservoir on 10 December 1967. Understanding the shallow distribution of resistivity pattern in such a seismically critical area is vital for mapping faults, fractures and lineaments. However, deducing true resistivity distribution from the apparent resistivity data lacks precise information due to intrinsic non-linearity in the data structures. Here we present a new technique based on the Bayesian neural network (BNN) theory using the concept of Hybrid Monte Carlo (HMC)/Markov Chain Monte Carlo (MCMC) simulation scheme. The new method is applied to invert one and two-dimensional Direct Current (DC) vertical electrical sounding (VES) data acquired around the Koyna region in India. Prior to apply the method on actual resistivity data, the new method was tested for simulating synthetic signal. In this approach the objective/cost function is optimized following the Hybrid Monte Carlo (HMC)/Markov Chain Monte Carlo (MCMC) sampling based algorithm and each trajectory was updated by approximating the Hamiltonian differential equations through a leapfrog discretization scheme. The stability of the new inversion technique was tested in presence of correlated red noise and uncertainty of the result was estimated using the BNN code. The estimated true resistivity distribution was compared with the results of singular value decomposition (SVD)-based conventional resistivity inversion results. Comparative results based on the HMC-based Bayesian Neural Network are in good agreement with the existing model results, however in some cases, it also provides more detail and precise results, which appears to be justified with local geological and structural details. The new BNN approach based on HMC is faster and proved to be a promising inversion scheme to interpret complex and non-linear resistivity problems. The HMC-based BNN results are quite useful for the interpretation of fractures and lineaments in seismically active region.

Inversion of Schlumberger resistivity sounding data from the critically dynamic Koyna region using the Hybrid Monte Carlo-based neural network approach

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