1. GFZ German Research Centre for Geosciences; Section 6.3 Geological Storage; 14473 Potsdam Germany
2. SINTEF Petroleum Research; 7031 Trondheim Norway
3. Institute of Geophysics; ETH Zurich; 8092 Zurich Switzerland
4. Institute of Geophysics and Geology; University of Leipzig; 04109 Leipzig Germany