1. Oregon Institute of Marine Biology University of Oregon P.O. Box 5389 Charleston Oregon 97420 USA
2. Bodega Marine Laboratory University of California Davis 2099 Westshore Drive Bodega Bay California 94923 USA
3. Department of Oceanography Graduate School of Engineering and Applied Sciences Naval Postgraduate School Monterey California 93943 USA
4. Department of Hydraulic Engineering Delft University of Technology Stevinweg 1 2628CN Delft The Netherlands