1. Assistant Professor, Marine Sciences Dept., Texas A&M Univ. at Galveston, Center for Texas Beaches and Shores, 200 Seawolf Pkwy., Galveston, TX 77553 (corresponding author).
2. Professor, Marine Sciences Dept., Texas A&M Univ. at Galveston, Center for Texas Beaches and Shores, 200 Seawolf Pkwy., Galveston, TX 77553.