1. 3D Seismic Lab, School of Earth and Ocean Sciences; Cardiff University; Cardiff UK
2. Now at Ikon Science Ltd.; Causeway House; The Causeway; Teddington Middlesex UK
3. 3D Seismic Lab, School of Earth and Ocean Sciences; Cardiff University; Main Building Park Place CF10 3AT Cardiff UK
4. Department of Geology and Geophysics; University of Hawaii; Honolulu Hawaii USA