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3D Gravity Inversion Using the Constrained Stochastic Method: Applications to Crustal-Scale Models of Rifted Margins
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 79th EAGE Conference and Exhibition 2017, Jun 2017, Volume 2017, p.1 - 5
Abstract
Summary
We present a new constrained inversion method for resolving crustal structure from regional gravity data. The variability of densities is included in the inversion by covariance parameters and the boundary information, obtained from bathymetric and seismic refraction data, is incorporated in the inversion using linear equality constraints. Using the proposed method, model structures with sharp boundaries can be obtained while the existing boundary information and sparse seismic constraints are honoured. We show through a synthetic example and a real-world example from offshore eastern Canada, that the proposed constrained inversion method is a valid tool for studying crustal-scale structures.
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