1. Seismology and Computational Rock Physics Laboratory, School of Geological Sciences; University College Dublin; Dublin Ireland
2. Now at Department of Physics; University of Alberta; Edmonton Alberta Canada
3. Now at Géoazur; Université de Nice Sophia-Antipolis, CNRS, Observatoire de la Côte d'Azur; Valbonne France
4. Now at Tullow Oil Ltd; Dublin Ireland
5. Escuela Centroamericana de Geología; Universidad de Costa Rica; San José Costa Rica
6. Red Sismológica Nacional (UCR-ICE); San José Costa Rica
7. OVSICORI-UNA; Universidad Nacional de Costa Rica; Heredia Costa Rica
8. Terra Cognita Consultores; San José Costa Rica