TOWARDS A SYNOPTIC INTERPRETATION OF AIRBORNE GEOPHYSICAL DATA BY DIFFERENT INVERSION TECHNIQUES AND IMMERSIVE VISUALIZATION

The rising competition in land use especially between water economy, agriculture, forestry, building material economy and other industries often leads to irreversible deterioration in the water and soil system (e.g. salinization and degradation) due to over-exploitation which results in a long term damage of natural resources.. Spatial surveys of underground geometry and physical parameters by aero-geophysical measurements and subsequent ground geophysics surveys target at the Cuxhavener Rinne (buried valley of Cuxhaven) that make it possible to gain the needed additional knowledge. The complementary use of airborne and ground geophysics, the validation, assimilation and improvement of current results by inversion techniques and plausibility tests help to the respond to following key questions: (1) Which algorithms (joint inversion, data assimilation and immersive visualization) are useful to describe structural settings of the usable subsurface by user specific characteristics as i.e. water volume, layer thicknesses, porosities etc.? (2) What are the physical relations of the observed parameters (electrical conductivities, magnetic susceptibilities, densities, etc.)? (3) How can we deduce characteristics or parameters from the observations which describe near subsurface structures (e.g. ground water systems, their charge, discharge and recharge, vulnerabilities and other quantities)?

The six partners of the AIDA project (AIDA – From Airborne Data Inversion to In-Depth Analysis) develop new and expand existent inversion strategies to improve structural parameter information on different space and time scales and test them for a multi-parameter inversion (joint inversion) together with immersive graphic. Primary goal is to solve comparable society related problems (as salinization, erosion, contamination, degradation etc.) in regions within Germany and abroad by generalization of project results.