English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/58697
Title: A new gravity inversion method for multiple subhorizontal discontinuity interfaces and shallow basins
Authors: Camacho, Antonio G.; Fernández Torres, José; Gottsmann, Joachim
Keywords: gravity inversion
discontinuity interfaces
Tenerife Island
Issue Date: 26-Feb-2011
Publisher: American Geophysical Union
Citation: Camacho, A. G., J. Fernández, and J. Gottsmann (2011), A new gravity inversion method for multiple subhorizontal discontinuity interfaces and shallow basins, J. Geophys. Res., 116, B02413, doi:10.1029/2010JB008023.
Abstract: We present a method for 3-D gravity inversion designed to obtain density contrast models described by subhorizontal layers limited by irregular discontinuity interfaces and models constituted by shallow basins with light infill. It is based on a previously published inversion method that provides, in a nearly automatic approach, the 3-D geometry of isolated anomalous bodies. The basic adjustment constraints are model fitness (fitting the anomaly data) and model smoothness (minimizing the total anomalous mass). For models corresponding to subhorizontal layers, we consider an additional minimization condition: the proximity to prescribed horizontal interfaces. This condition is arranged by including an additional weighting (inverse proportional to the distance to the interface) in the covariance matrix for model parameters. The approach works, according a growth process that increases, step by step, the volume of the adjusted anomalous bodies. Some advantages of the method are simultaneous adjustment of a (linear) regional gravity trend, possibility of including simultaneously positive and negative anomalous structures in the model, and unified inversion approach for isolated bodies, basins, and subhorizontal interface structures. We include several simulation examples and an application case (layered model for the volcanic island of Tenerife).
Publisher version (URL): http://dx.doi.org/10.1029/2010JB008023
URI: http://hdl.handle.net/10261/58697
DOI: 10.1029/2010JB008023
ISSN: 0148-0227
E-ISSN: 1934-8843
Appears in Collections:(IAG) Artículos
Files in This Item:
File Description SizeFormat 
JGR_2011_116_B02413.pdf2,86 MBAdobe PDFThumbnail
Show full item record

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.