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Report on Ebeko (Russia) — 27 July-2 August 2005

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 27 July-2 August 2005
Managing Editor: Gari Mayberry

Please cite this report as:

Global Volcanism Program, 2005. Report on Ebeko (Russia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 27 July-2 August 2005. Smithsonian Institution and US Geological Survey.

Volcano Profile |  Weekly Report (27 July-2 August 2005)


Ebeko

Russia

50.686°N, 156.014°E; summit elev. 1103 m

All times are local (unless otherwise noted)


KVERT raised the Concern Color Code at Ebeko around 29 July from Green to Yellow. During 22-29 July, new fumaroles were noted in the volcano's active crater, and an explosion in the crater emitted hot steam. These types of strong changes in the crater had not been observed since 1982.

Geologic Background. 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. Blocky lava flows extend west from Ebeko and SE from the neighboring Nezametnyi cone. The eastern part of the southern crater contains strong solfataras and a large boiling spring. The central crater 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, on the outer flanks of the cone, and in lateral explosion craters.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)