1. Laboratory of Cartography and Applied Geology (Labcarga) and Department of Geotechnical Engineering; School of Engineering (ISEP), Polytechnic of Porto; 4200-072 Porto Portugal
2. Centre GeoBioTec; University of Aveiro; 3810-193 Aveiro Portugal
3. Centre of Geographical Studies and Spatial Planning (CEGOT) and Department of Geography; Faculty of Arts, University of Porto; 4150-564 Porto Portugal
4. Centre CERENA (CEPGIST), Instituto Superior Técnico; Technical University of Lisbon; 1049-001 Lisbon Portugal