Three-dimensional gravity inversion based on the simulated annealing algorithm for constraining diapiric roots of salt canopies

Seiichi Nagihara, S. Cristina Urizar, Stuart A. Hall

Research output: Contribution to conferencePaperpeer-review

Abstract

We have developed a three-dimensional gravity inversion technique that utilizes the Metropolis simulated annealing algorithm for global optimization. This technique is effective in locating and constraining the diapiric roots of salt canopies, which are difficult to image seismically. Unlike the traditional least-squares approach, the SA computation does not suffer from instability and the coding is extremely simple. The non-uniqueness problem is minimized by use of the salt top morphology, which can be obtained from a limited 2-D seismic coverage, as a priori information. Our technique has been applied to synthetic data and has identified the location and geometry of three separate diapiric roots hidden under a laterally extensive salt sheet.

Original languageEnglish
StatePublished - 1999
Event1999 Society of Exploration Geophysicists Annual Meeting, SEG 1999 - Houston, United States
Duration: Oct 31 1999Nov 5 1999

Conference

Conference1999 Society of Exploration Geophysicists Annual Meeting, SEG 1999
CountryUnited States
CityHouston
Period10/31/9911/5/99

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