1. Prof. of Civ. Engrg. and Adjunct Prof. of Quaternary Research; Univ. of Washington, Seattle, Wash
2. Grad. Student in Civ. Engrg.; Univ. of Washington, Seattle, Wash
3. Research Assoc. and Lect.; Dept. of Civ. Engrg., Univ. of Washington, Seattle, Wash