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D038 3D Anisotropic Depth Migration Operators for Marine Controlled–Source Electromagnetic Data K. Hokstad* (Statoil Research Centre) T. Røsten (Statoil Research Centre) & B. Arntsen (Statoil Research Centre) SUMMARY We present frequency-wavenumber (FK) and explicit finite-difference (FD) operators for 3-D anisotropic depth migration of controlled-source electromagnetic (CSEM) data in transversely isotropic (TI) media. A requirement for the applicability of the proposed one-way migration operators is separation of the CSEM data into up-going and down-going transverse electric (TE) and transverse magnetic (TM) modes. EAGE 69 th Conference & Exhibition — London UK 11 - 14 June 2007 ÁÒØÖÓ�Ù Ø�ÓÒ �Ë�Å ��Ø� �Ö�