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Title

Joint inversion of long-period magnetotelluric data and surface-wave dispersion curves for anisotropic structure: Application to data from Central Germany

AuthorsRoux, E. ; Moorkamp, M.; Jones, A. G.; Bischoff, M.; Endrun, B.; Lebedev, S.; Meier, T.
Issue Date10-Mar-2011
PublisherAmerican Geophysical Union
CitationGeophysical Research Letters 38: L05304 (2011)
AbstractGeophysical datasets sensitive to different physical parameters can be used to improve resolution of Earth's internal structure. Herein, we jointly invert long-period magnetotelluric (MT) data and surface-wave dispersion curves. Our approach is based on a joint inversion using a genetic algorithm for a one-dimensional (1-D) isotropic structure, which we extend to 1-D anisotropic media. We apply our new anisotropic joint inversion to datasets from Central Germany demonstrating the capacity of our joint inversion algorithm to establish a 1-D anisotropic model that fits MT and seismic datasets simultaneously and providing new information regarding the deep structure in Central Germany. The lithosphere/asthenosphere boundary is found at approx. 84 km depth and two main anisotropic layers with coincident most conductive/seismic fast-axis direction are resolved at lower crustal and asthenospheric depths. We also quantify the amount of seismic and electrical anisotropy in the asthenosphere showing an emerging agreement between the two anisotropic coefficients.
Description5 pages, 3 figures, 1 table.
Publisher version (URL)http://dx.doi.org/10.1029/2010GL046358
URIhttp://hdl.handle.net/10261/53445
DOI10.1029/2010GL046358
ISSN0094-8276
Appears in Collections:(ICM) Artículos
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