MT. KLYUCHEVSKOY VOLCANO, Kamchatka, Russia 56o11'N, 160o47' E Thursday, September 9, 1993, 08:00 AM ADT On September 9, a gas and ash plume was as high as 200 meters above the crater, extending to the southeast for about 15 km. Constant volcanic tremor was registered under the volcano. Within the summit crater, eruptive outbursts occurred throughout the day. Seismicity increased beyond that of last update. A JPL-RAS team on Klyuchevskoy volcano yesterday investigated reports of a flank eruption, but found no new eruptive activity at that time.