1. Statoil Research Center, Trondheim, Norway and Norwegian Institute of Science and Technology, Department of Geosciences and Petroleum, Trondheim, Norway..
2. Seismic Apparition GmbH, Zurich, Switzerland and Lund University, Centre for Mathematical Sciences, Lund, Sweden..
3. Seismic Apparition GmbH, Zurich, Switzerland and Institute of Geophysics, ETH-Zurich, Zurich, Switzerland..
4. Seismic Apparition GmbH, Zurich, Switzerland..