Open-File Report 96-738
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TABLES
Summary of 1995 VOLCANIC ACTIVITY in Alaska, including actual eruptions, possible eruptions, and unusual increases in fumarolic activity. Location of volcanoes shown in figure 1.
Table 1: Summary of Volcanic Activity Volcano Date of Activity Type of ActivityMount Veniaminof 7-30-931 to 2low level intermittent strombolian eruptions, steam emissions, and occasional dilute ash bursts continued through 1995; rumbling and booms reported by residents of nearby Perryville in November; hot spots in caldera detected by satellite intermittently through 1995 Shishaldin Volcano 12-23-95possible brief eruption of ash; large steam plumes frequently noted by pilots throughout the year Makushin Volcano 1-30-95pilot report of steam plume, possibly with ash, to 2,400 m; activity subsided within 1 hour; NSWS issued SIGMET KanagaVolcano 4-933 to 6-954intermittent eruptive activity continued through most of 1995 June 19, 1995, pilots reported a weak ash and gas plume extending 25 km from the volcano at or near summit level; probable phreatic explosion related to cooling lava in summit region; observers on USFWS ship Tiglax report hot rock debris continuing to cascade down north flank during summer months 1 earliest known eruptive activity recorded by AVO
2 eruption possibly continues into 1996
3 first sightings of increased steaming from Kanaga; AVO first received report 12-29-93
4 end of eruptive activity not well documented
Summary of SUSPECTED VOLCANIC ACTIVITY (SVA) in 1995. A SVA is defined as an eruption report of possible eruption report that is found to be normal fumarolic activity or weather-related or non-volcanic phenomena. Location of volcanoes shown in Figure 1.
Table 2: Summary of SVA Volcano Date of Activity Type of ActivityKatmai Group Mount Martin 3-15-95false alarm; unusually large steam plume from Martin Atka Island Korovin, Kliuchef 5-01-95 false alarm; strong sulfur smell in Atka village; possible small steam plume over Kliuchef on 5-1-95
Summary of RUSSIAN VOLCANIC ERUPTION on Kamchatka Peninsula, 1995. Location of volcanoes shown in Figure 7.
Table 3: Summary of Russian Volcanic Eruption Volcano Date of Activity Type of ActivityBezymianny 10-05-95 explosive eruption; ash plume to 10km (22,000 ft) that traveled 5000 km ESE across north Pacific aircraft routes; 2-3 mm ashfall on Kliuchi, 50 km NNE Karymsky mid-April 1995 increased seismicity, precursory to explosive eruption on January 1, 1996