1. Department of Geography and Environmental Sciences, Faculty of Engineering and EnvironmentNorthumbria University Newcastle upon Tyne UK
2. School of Geography, Politics and SociologyNewcastle University Newcastle upon Tyne UK
3. School of GeosciencesUniversity of Edinburgh Edinburgh UK
4. Department of Electrical EngineeringStanford University Stanford CA USA
5. Department of GeophysicsStanford University Stanford CA USA
6. Grantham Institute and Department of Earth Science and EngineeringImperial College London London UK