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Archive for February 19th, 2009

Volcano Watch: 17 February 2009

Posted by msrb on February 19, 2009

Volcanic Activity Report: 11 February – 17 February 2009

Source: SI / USGS Weekly Volcanic Activity Report

New activity/unrest:

Volcano of the Week: Ebeko

Country:    Russia
Region   :    Kuril Islands

Volcano Type:     Somma volcano
Last Known Eruption:     2005
Summit Elevation:   1,156 m     (3,793 feet)
Latitude:     50.68°N     (50°41’0″N)
Longitude:     156.02°E    (156°1’0″)


An ash-bearing eruption column rises above the North crater of Ebeko volcano on September 9, 1989. An explosive eruption that began on February 2, 1989 continued until April 1990. Three summit craters located along a SSW-NNE line form Ebeko volcano proper, which occupies the northern end of a complex of five volcanic cones at the northern end of Paramushir Island. Historical activity, recorded since the late-18th century, has been restricted to small-to-moderate explosive eruptions from the summit craters. Photo courtesy of Kamchatka Volcanic Eruptions Response Team, 1989. Caption: GVP

The Tokyo VAAC reported an ash plume which drifted NE from Ebeko at an altitude of 0.6 km. Another ash plume was detected drifting SW at an altitude of 1.2 km ft.

Geologic Summary. The flat-topped summit of the central cone of Ebeko volcano, one of the most active in the Kuril Islands, occupies the northern end of Paramushir Island. Three summit craters located along a SSW-NNE line form Ebeko volcano proper, at the northern end of a complex of five volcanic cones. The eastern part of the southern crater of Ebeko contains strong solfataras and a large boiling spring. The central crater of Ebeko is filled by a lake about 20 m deep whose shores are lined with steaming solfataras; the northern crater lies across a narrow, low barrier from the central crater and contains a small, cold crescentic lake. Historical activity, recorded since the late-18th century, has been restricted to small-to-moderate explosive eruptions from the summit craters. Intense fumarolic activity occurs in the summit craters of Ebeko, on the outer flanks of the cone, and in lateral explosion craters. GVP

Ongoing Activity:

Posted in Arenal, fumarolic activity, Kamchatka, Paramushir Island, Shishaldin | Tagged: , , , , | Leave a Comment »