1. School of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol BS8 1RJ, UK
2. School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
3. School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth PL4 8AA, UK
4. The University of the West Indies, Seismic Research Centre, St Augustine, Trinidad and Tobago, West Indies
5. GNS Science, PO Box 30368, Lower Hutt, 5040, Aotearoa, New Zealand