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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 Activity
Mount Veniaminof
7-30-931 to 2
low 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
12-23-95
possible brief eruption of ash; large steam plumes frequently noted by pilots throughout the year
Makushin Volcano
1-30-95
pilot report of steam plume, possibly with ash, to 2,400 m; activity subsided within 1 hour; NSWS issued SIGMET
Kanaga
Volcano
4-933 to 6-954
intermittent 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 Activity
Katmai Group
Mount Martin
3-15-95
false 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 Activity
Bezymianny
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

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