1. 1Seismic Research Centre, The University of The West Indies, Trinidad and Tobago, West Indies
2. 2Now at, Bureau des Recherches Géologiques et Minières, Direction Régionale Guadeloupe, Guadeloupe, French West Indies
3. 3Montserrat Volcano Observatory, Montserrat, West Indies
4. 4Office of Disaster Preparedness and Management, Trinidad and Tobago, West Indies