Affiliation: | (1) Department of Geography and Environmental Engineering, The United States Military Academy, West Point, NY 10996-1695, USA e-mail: bm8375@exmail.usma.edu Tel: +1-914-9382820, Fax: +1-914-9383339, US;(2) Picker Engineering Program, Smith College, Northampton, MA 01063, USA, US |