1. School of Marine Science and Policy; University of Delaware; Newark DE USA
2. COPAS-Sur Austral, University of Concepcion; Concepcion Chile
3. Department of Oceanography; University of Concepcion; Concepcion Chile
4. School of Oceanography; University of Washington; Seattle WA USA
5. Department of Earth and Space Sciences and Quaternary Research Center; University of Washington; Seattle WA USA
6. Centro de Estudios Científicos; Valdivia Chile