1. Department of Geography, Royal Holloway University of London Egham Surrey TW20 0EX UK
2. Centre of Marine Sciences (CCMAR/CIMAR LA) Campus de Gambelas, Universidade do Algarve Faro 8005‐139 Portugal
3. Divisão de Geologia e Georecursos Marinhos Instituto Português do Mar e da Atmosfera (IPMA) Av. Doutor Alfredo Magalhães Ramalho 6 1495‐165 Algés Portugal
4. Department of Geography University College London North‐West Wing, Gower St London WC1E 6BT UK
5. Department of Geography King's College London 40 Bush House London WC2B 4BG UK