1. Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720-1710, USA
2. Smithsonian Tropical Research Institute (STRI), Apartado 0843-0392 Balboa, Ancon, Panama
3. Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT-AIP), City of Knowledge, Panama
4. Universidad Technológica de Panamá (UTP), Campus Victor Levi Sasso, Ancon, Panama City, Panama