1. Russian State Science Center ‘VNIIgeosystem’; 8, Varshavskoe shosse Moscow 117105 Russia
2. Lomonosov Moscow State University Centre for Seismic Data Analysis Ltd; 1/77 Leninskiye Gory Moscow 119234 Russia
3. Department of Exploration Geophysics and CSIRO Earth Science and Resource Engineering; Curtin University; ARRC 26 Dick Perry Avenue Kensington WA 6845 Australia