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AGU: Geophysical Research Letters

 

Keywords

  • joint inversion
  • data integration
  • geophysical imaging

Index Terms

  • Exploration Geophysics: Computational methods: seismic
  • Exploration Geophysics: Computational methods: potential fields
  • Exploration Geophysics: Magnetic and electrical methods
  • Mathematical Geophysics: Inverse theory

Abstract

Multiple cross-gradient joint inversion for geospectral imaging

Luis A. Gallardo

Earth Science Division, Centro de Investigación Científica y Educación Superior de Ensanada, Ensenada, Mexico

Accurate characterization and monitoring of complex subsurface environments require the integration of all the available geophysical, geochemical and geological information. I developed a generalized cross-gradient procedure that seeks multiple geometrically similar images that simplify the integration of cross-property subsurface information. I jointly invert near-surface P-wave, S-wave, DC resistivity and magnetic data sets recorded at a field site and compound an integrated subsurface (geospectral) image based on the multiple property images found. It is shown that, by analogy to applications in satellite imagery, the geospectral image assembles the multiple subsurface parameter values under a common structural framework that facilitates their visualization and analysis.

Received 3 May 2007; accepted 26 July 2007; published 2 October 2007.

Citation: Gallardo, L. A. (2007), Multiple cross-gradient joint inversion for geospectral imaging, Geophys. Res. Lett., 34, L19301, doi:10.1029/2007GL030409.

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