Report on Ebeko (Russia) — June 2020
Bulletin of the Global Volcanism Network, vol. 45, no. 6 (June 2020)
Managing Editor: Edward Venzke. Research and preparation by Berger.
Ebeko (Russia) Frequent moderate explosions, ash plumes, and ashfall continue, December 2019-May 2020
Please cite this report as:
Global Volcanism Program, 2020. Report on Ebeko (Russia) (Venzke, E., ed.). Bulletin of the Global Volcanism Network, 45:6. Smithsonian Institution.
50.686°N, 156.014°E; summit elev. 1103 m
All times are local (unless otherwise noted)
The current moderate explosive eruption of Ebeko has been ongoing since October 2016, with frequent ash explosions that have reached altitudes of 1.3-6 km (BGVN 42:08, 43:03, 43:06, 43:12, 44:12). Ashfall is common in Severo-Kurilsk, a town of about 2,500 residents 7 km ESE, where the Kamchatka Volcanic Eruptions Response Team (KVERT) monitor the volcano. During the reporting period, December 2019-May 2020, the Aviation Color Code remained at Orange (the second highest level on a four-color scale).
During December 2019-May 2020, frequent explosions generated ash plumes that reached altitudes of 1.5-4.6 km (table 9); reports of ashfall in Severo-Kurilsk were common. Ash explosions in late April caused ashfall in Severo-Kurilsk during 25-30 April (figure 24), and the plume drifted 180 km SE on the 29th. There was also a higher level of activity during the second half of May (figure 25), when plumes drifted up to 80 km downwind.
|Date||Plume Altitude (km)||Plume Distance||Plume Directions||Other Observations|
|30 Nov-05 Dec 2019||3||--||NE, E||Intermittent explosions.|
|06-13 Dec 2019||4||--||E||Explosions all week. Ashfall in S-K on 10-12 Dec.|
|15-17 Dec 2019||3||--||E||Explosions. Ashfall in S-K on 16-17 Dec.|
|22-24 Dec 2019||3||--||NE||Explosions.|
|01-02 Jan 2020||3||30 km N||N||Explosions. TA over dome on 1 Jan.|
|03, 05, 09 Jan 2020||2.9||--||NE, SE||Explosions. Ashfall in S-K on 8 Jan.|
|11, 13-14 Jan 2020||3||--||E||Explosions. Ashfall in S-K.|
|19-20 Jan 2020||3||--||E||Ashfall in S-K on 19 Jan.|
|24-31 Jan 2020||4||--||E||Explosions.|
|01-07 Feb 2020||3||--||E, S||Explosions all week.|
|12-13 Feb 2020||1.5||--||E||Explosions. Ashfall in S-K.|
|18-19 Feb 2020||2.3||--||SE||Explosions.|
|21, 25, 27 Feb 2020||2.9||--||S, SE, NE||Explosions. Ashfall in S-K on 22 Feb.|
|01-02, 05 Mar 2020||2||--||S, E||Explosions.|
|08 Mar 2020||2.5||--||NE||Explosions.|
|13, 17 Mar 2020||2.5||--||NE, SE||Bursts of gas, steam, and small amount of ash.|
|24-25 Mar 2020||2.5||--||NE, W||Explosions.|
|29 Mar-02 Apr 2020||2.2||--||NE, E||Explosions. Ashfall in S-K on 1 Apr. TA on 30-31 Mar.|
|04-05, 09 Apr 2020||1.5||--||NE||Explosions. TA on 5 Apr.|
|13 Apr 2020||2.5||--||SE||Explosions.|
|18, 20 Apr 2020||--||--||--||TA on 18, 20 Apr.|
|24 Apr-01 May 2020||3.5||180 km SE on 29 Apr||E, SE||Explosions all week. Ashfall in S-K on 25-30 Apr.|
|01-08 May 2020||2.6||--||E||Explosions all week. Ashfall in S-K on 3-5 May. TA on 3 May.|
|08-15 May 2020||4||--||E||Explosions. Ashfall in S-K on 8-12 May. TA during 12-14 May.|
|14-15, 19-21 May 2020||3.6||80 km SW, S, SE during 14, 20-21 May||--||Explosions. TA on same days.|
|22-29 May 2020||4.6||60 km SE||E, SE||Explosions all week. Ashfall in S-K on 22, 24 May.|
|29-31 May 2020||4.5||--||E, S||Explosions. TA on 30 May.|
|Figure 24. Photo of ash explosion at Ebeko at 2110 UTC on 28 April 2020, as viewed from Severo-Kurilsk. Courtesy of KVERT (L. Kotenko).|
|Figure 25. Satellite image of Ebeko from Sentinel-2 on 27 May 2020, showing a plume drifting SE. Image using natural color rendering (bands 4, 3, 2) courtesy of Sentinel Hub Playground.|
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: Kamchatka Volcanic Eruptions Response Team (KVERT), Far Eastern Branch, Russian Academy of Sciences, 9 Piip Blvd., Petropavlovsk-Kamchatsky, 683006, Russia (URL: http://www.kscnet.ru/ivs/kvert/); Institute of Volcanology and Seismology, Far Eastern Branch, Russian Academy of Sciences (IVS FEB RAS), 9 Piip Blvd., Petropavlovsk-Kamchatsky 683006, Russia (URL: http://www.kscnet.ru/ivs/eng/); Sentinel Hub Playground (URL: https://www.sentinel-hub.com/explore/sentinel-playground).