1. Institute of Environmental Engineering; ETH Zurich; Stefano-Franscini-Platz 5 8093 Zurich Switzerland
2. Department of Geography, Faculty of Engineering and Environment; Northumbria University; Newcastle upon Tyne UK
3. Centro de Estudios Avanzados en Zonas Áridas (CEAZA); Universidad de La Serena; Raúl Bitrán 1305 La Serena Chile
4. Department of Civil Engineering, Faculty of Physical and Mathematical Sciences; University of Chile; Av. Blanco Encalada 2002 Santiago Chile
5. Advanced Mining Technology Centre (AMTC), Faculty of Physical and Mathematical Sciences; University of Chile; Av. Tupper 2007 Santiago Chile