In mid-1980, after the May eruption, USGS Survey scientists decided to establish the David A. Johnston Cascades Volcano Observatory (CVO) in Vancouver,[REF] intending to closely monitor volcanoes in Oregon, Washington, and Idaho [REF].
From 1989 to 1991,[REF] Glicken continued his volcanological studies in Japan as a postdoctoral fellow at the Earthquake Research Institute of the University of Tokyo, supported by grants from the U.S. National Science Foundation [REF].