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A magnetotelluric profile across the German Deep Drilling Project (KTB) area: Two- and three-dimensional modeling results

Urheber*innen

Eisel,  M.
External Organizations;
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Haak,  V.
Deutsches GeoForschungsZentrum;
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Pek,  J.
External Organizations;
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Cerv,  V.
External Organizations;
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

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Zitation

Eisel, M., Haak, V., Pek, J., Cerv, V. (2001): A magnetotelluric profile across the German Deep Drilling Project (KTB) area: Two- and three-dimensional modeling results. - Journal of Geophysical Research, 106, B8, 16061-16073.
https://doi.org/10.1029/2000JB900451


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_229249
Zusammenfassung
Previous interpretations of magnetotelluric data from the vicinity of the German Deep Drilling Project (KTB) revealed two major structures: a mid-crustal layer of increased conductivity and large, regional extent, and a highly anisotropic upper crust. Nevertheless, a satisfactory combination of both structures explaining all measurements has not been achieved yet, mostly due to incomplete and qualitatively poor data. Simplified superposition of both structures could not yield an explanation of the observations. Based on a carefully processed new data set we apply different modelling approaches to verify the existence of both structures. Models calculated with a two-dimensional modeling program, which allows for generalized anisotropy as well as a full three-dimensional code show that an anisotropic upper crust is overlaying a regional east-west striking high conductivity structure. Nevertheless, this continuous conductive mid-crustal layer with a conductance decreasing from north to south must be replaced by that of a repeatedly interrupted quasi-anisotropic high conductivity zone, at least in the region of the KTB. This may be understood in terms due to the complexity of the geology in this particular area, which allows only the major structures to be resolved.