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Gravity and magnetic
surveys are used in regional and deep exploration, in the prospection
of deposits
and in engineering and environmental geophysics. Usually, these
methods are performed to cover prospective areas before the application
of other cost intensive exploration methods.
Integrated interpretation of seismic data with high-resolution gravity
and magnetic surveys is one efficient tool to solve problems in
areas with complex geology.
For data acquisition highly sensitive gravimeters (Scintre Autograv
CG-3M, LaCoste & Romberg, Sodin and Sharpe) and magnetometers
(proton precession magnetometers, optically pumped vapor magnetometers,
fluxgate-gradiometers) as well as state of the art geodetic instruments
(electro optical tachymeter, satellite navigation system for real-time
GPS) are provided.
Magnetic surveys can be performed on-shore, airborne, off-shore or in boreholes.
For data processing, modelling and geological interpretation a variety of software
modules are in use. Practically all reductions, corrections, field transformations
and different inversion techniques as well as 2D, 2.5D and 3D modelling are feasible.
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