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Report on Ebeko (Russia) — 12 September-18 September 2018

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 12 September-18 September 2018
Managing Editor: Sally Kuhn Sennert

Please cite this report as:

Global Volcanism Program, 2018. Report on Ebeko (Russia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 12 September-18 September 2018. Smithsonian Institution and US Geological Survey.

Volcano Profile |  Weekly Report (12 September-18 September 2018)


Ebeko

Russia

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

All times are local (unless otherwise noted)


KVERT reported that a thermal anomaly over Ebeko was identified in satellite images during 7, 9, and 12-13 September. Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E, observed explosions that sent ash plumes to 3.4 km (11,200 ft) a.s.l. and occasional incandescence during 10-13 September; ash plumes visible in satellite data drifted 113 km SE and NE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

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)