Institution: | Schlumberger Cambridge Research, High Cross, Madingley Road, Cambridge CB3 0EL,;UK. E-mail: University of Edinburgh, Department of Geology and Geophysics, Grant Institute, West Mains Road, Edinburgh, UK;Instituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Borgo Grotta Gigante 42/c;, Sgonico 34010, Trieste, Italy Scientific Software, Mouans-Sartoux, France. E-mail: , |