1. Geophysics Solutions, PETRONAS Carigali, PETRONAS Twin Towers, 50088 Kuala Lumpur, Malaysia and Geophysics Programme, School of Physics, Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia. (corresponding author)
2. Formerly Center for Advanced Imaging, PETRONAS Carigali, PETRONAS Twin Towers, 50088 Kuala Lumpur, Malaysia; presently GeoMaxo Ltd., Lancaster LA1 5BL, UK.
3. CGG Multi-Physics Imaging, Milan 20133, Italy.
4. Geoscience Solutions, PETRONAS Carigali, PETRONAS Twin Towers, 50088 Kuala Lumpur, Malaysia.
5. Geophysics Programme, School of Physics, Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia.