Gravity and Magnetotelluric Modeling of Salt Structures for Improved Seismic Imaging

P116 GRAVITY AND MAGNETOTELLURIC MODELING OF SALT STRUCTURES FOR IMPROVED SEISMIC IMAGING Summary 1 For better imaging of sub-salt structures the diffuse seismic interpretation in the shallower parts of the Wedehof salt dome located in Northern Germany [4] was improved by integrated 3-D modeling of gravity and magnetotelluric data. Densely surveyed gravity data were already available while a new high-resolution hybrid natural field / controlled source audio frequency magnetotelluric (AMT/MT) survey was carried out aiming to improve the interpretation of the top and overhanging salt structures. The salt boundaries show strong resistivity contrasts with the surrounding sediments and thus represent