Emanuel Storey, San Diego State University, Department of Geography, San Diego, CA, United States, Douglas A Stow, San Diego State University, Geography, San Diego, CA, United States, Dar A Roberts, University of California Santa Barbara, Department of Geography, Santa Barbara, CA, United States, Frank W Davis, University of California, Santa Barbara, CA, United States and John O'Leary, San Diego State University, Geography, San Diego, United States