In the last few decades, the spectral analysis approach has been successfully applied for depth estimation of gravity and magnetic anomaly sources by analyzing the signal power distribution as a function of spatial frequencies. In the present work, application of high-resolution spectral methods is proposed for inversion of self-potential (SP) data. In particular, Periodogram Method (PM), Maximum Entropy Method (MEM) and Multi Taper Method (MTM) are used to invert synthetic SP data generated by cylinder and sheet sources. From analysis, MEM was found to be better in providing more accurate estimates of the source depth as compared to PM and MTM. Finally, the application of the proposed methods to field data is presented and the estimated depths are compared with those obtained by other numerical methods.

High-resolution spectral analysis methods for self-potential data inversion / Rani, Payal; DI MAIO, Rosa; Piegari, Ester. - (2015), pp. 1596-1601. (Intervento presentato al convegno 85TH SEG ANNUAL MEETING tenutosi a New Orleans (USA) nel 18-23 ottobre 2015) [10.1190/segam2015-5810869.1].

High-resolution spectral analysis methods for self-potential data inversion

RANI, PAYAL;DI MAIO, ROSA;PIEGARI, ESTER
2015

Abstract

In the last few decades, the spectral analysis approach has been successfully applied for depth estimation of gravity and magnetic anomaly sources by analyzing the signal power distribution as a function of spatial frequencies. In the present work, application of high-resolution spectral methods is proposed for inversion of self-potential (SP) data. In particular, Periodogram Method (PM), Maximum Entropy Method (MEM) and Multi Taper Method (MTM) are used to invert synthetic SP data generated by cylinder and sheet sources. From analysis, MEM was found to be better in providing more accurate estimates of the source depth as compared to PM and MTM. Finally, the application of the proposed methods to field data is presented and the estimated depths are compared with those obtained by other numerical methods.
2015
High-resolution spectral analysis methods for self-potential data inversion / Rani, Payal; DI MAIO, Rosa; Piegari, Ester. - (2015), pp. 1596-1601. (Intervento presentato al convegno 85TH SEG ANNUAL MEETING tenutosi a New Orleans (USA) nel 18-23 ottobre 2015) [10.1190/segam2015-5810869.1].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/626722
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