Report on Ebeko (Russia) — May 1989
Scientific Event Alert Network Bulletin, vol. 14, no. 5 (May 1989)
Managing Editor: Lindsay McClelland.
Ebeko (Russia) Ash emission from new flank vent; felt seismicity
Please cite this report as:
Global Volcanism Program, 1989. Report on Ebeko (Russia) (McClelland, L., ed.). Scientific Event Alert Network Bulletin, 14:5. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198905-290380.
50.686°N, 156.014°E; summit elev. 1103 m
All times are local (unless otherwise noted)
An eruption that began 3 February from Ebeko's N crater formed a new flank vent that emitted ash and gas. The explosive activity ejected a plume that rose 2.5 km in April and May, accompanied by felt seismicity. Fumarole temperatures increased by 30°C. The eruption was continuing in late May.
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.
Information Contacts: G. Bogoyavlenskaya and I. Menyailov, IV,.