Approved for public release; distribution is unlimited. Naval Research Laboratory Stennis Space Center, MS 39529-5004 June 28, 2002 NRL/MR/7430--02-8274 NRL-APL Grain Size Algorithm Upgrade KEVIN B. BRIGGS Seafloor Sciences Branch Marine Geosciences Division DARRELL R. JACKSON K. Y. MORAVAN Applied Physics Laboratory University of Washington Seattle, WA