1. Barcelona Center for Subsurface Imaging; Institute of Marine Sciences, CSIC; Barcelona Spain
2. Formerly at Geophysics Section; School of Cosmic Physics; Dublin Institute for Advanced Studies; Dublin Ireland
3. Geological Survey of Ireland; Dublin Ireland
4. Department of Geology and Geophysics; Woods Hole Oceanographic Institution; Woods Hole Massachusetts USA
5. School of Chemical Sciences; Dublin City University; Dublin Ireland