Optical Properties as Tracers of Water Mass Structure and Circulation Patterns in the Japan/East Sea Researchers B. Greg Mitchell, gmitchell@ucsd.edu Mati Kahru, mkahru@ucsd.edu Scripps Institution of Oceanography University of California at San Diego 9500 Gilman Drive La Jolla, CA 92093-0218 Award Number N00014-98-1-0247