A009 A new regularization for the inversion of IP data based on the minimum gradient support 1 R. BLASCHEK(1) A. HÖRDT(1) A. KEMNA(2) (1) University of Bonn Institute of Geology Department of Applied Geophysics (2) Agrosphere Institute (ICG-IV) Forschungszentrum Jülich Summary We present a new regularization scheme for the inversion of resistivity and induced polarization (IP) data which supports large resistivity magnitude and phase contrasts. Basis of our approach is the minimum gradient support after Portniaguine and Zhdanov (1999) which tries to minimize the occurrence of parameter contrasts independent of the magnitude of the contrasts. Additionally the spatially varying sensitivity


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