Mi, 29. Dez 2004, 06:00
During 23-28 December, seismicity decreased slightly at Shiveluch but remained above background levels. Seismicity indicated that possible ash-and-gas explosions occurred on 26 and 27 December and plumes may have risen as high as ~4 km a.s.l. Observed explosions also occurred on 26 and 27 December that produced gas-and-ash explosions to ~2 km above the lava dome.
Mi, 22. Dez 2004, 06:00
Seismicity was above background levels at Shiveluch during 19-22 December, with weak shallow earthquakes occurring at a depth of ~0.5 km beneath the active lava dome. Based on interpretations of seismic data, ash-and-gas explosions may have risen to 3.5 km a.s.l. on 20 December.
Mi, 17. Nov 2004, 06:00
Seismicity was above background levels at Shiveluch during 12-19 November, with weak shallow earthquakes occurring at a depth of 0.5 km beneath the active lava dome. Based on interpretations of seismic data, possible ash-and-gas explosions up to 6 km a.s.l were registered on 15 November. Ash-and-gas explosions up to 4-5 km a.s.l were noted all week and possible weak ash-and-gas explosions and hot avalanches also occurred.
Read allMi, 10. Nov 2004, 06:00
Seismicity was above background levels at Shiveluch during 5-12 November, with weak shallow earthquakes occurring beneath the active lava dome. Based on interpretations of seismic data, possible ash-and-gas explosions up to 6.5-7 km a.s.l. were registered on 5, 7, 9, and 11 November.
Read allMi, 3. Nov 2004, 06:00
Seismicity was above background levels at Shiveluch during 29 October-5 November, with weak shallow earthquakes occurring beneath the active lava dome. Based on interpretations of seismic data, possible ash-and-gas explosions up to 6.5 km a.s.l. occurred on 30 October and 2-4 November.
Read allMi, 20. Okt 2004, 06:00
During 15-22 October, seismicity at Shiveluch was above background levels, with shallow earthquakes occurring beneath the active lava dome. Based on interpretations of seismic data, ash-and-gas explosions possibly produced plumes to 6.5 km a.s.l. In addition, avalanches of hot material may have occurred during the week.
Read allMi, 13. Okt 2004, 06:00
Seismicity was above background levels at Shiveluch during 8-15 October, with weak shallow earthquakes occurring beneath the active lava dome. Two relatively strong shallow earthquakes, M 1.75 and 2.1, were recorded on 8 and 11 October, respectively. Spasmodic tremor was recorded during 7-12 October.
Read allMi, 22. Sep 2004, 06:00
Seismicity was above background levels at Shiveluch during 23 September to 1 October, with 26 strong shallow earthquakes up to M 2.3 recorded during 23-29 September. Several explosions were seen that produced ash plumes to a maximum height of 4.5 km a.s.l., while interpretations of seismic data suggested that plumes rose to 6.5 km a.s.l. [Correction: According to interpretations of seismic data there were ~20 ash plumes at heights between 4 and 6.5 km a.s.l.
Read allMi, 15. Sep 2004, 06:00
Unrest at the volcano continues, with a lava dome growing in the active crater and above-background levels of seismicity. On 12 September a gas-and-steam plume extended > 70 km to the ESE. According to seismic data, during 14-16 September there were four possible ash plumes up to 5-6 km a.s.l.
Read allMi, 8. Sep 2004, 06:00
Seismicity was above background levels at Shiveluch during 3-10 September, with several weak earthquakes occurring 0-5 km beneath the active lava dome. On 6 September at 2054 an explosion produced small pyroclastic flows and an ash plume that rose to ~5.5 km a.s.l. Shiveluch remained at Concern Color Code Orange.
Read allMi, 1. Sep 2004, 06:00
Seismicity was above background levels at Shiveluch during 27 August to 3 September, with weak earthquakes occurring 0-5 km beneath the lava dome. Gas-and-steam plumes rose to ~2.6 km a.s.l. on 1 September. Shiveluch remained at Concern Color Code Orange.
Read allMi, 18. Aug 2004, 06:00
Seismicity was above background levels at Shiveluch during 13-20 August, with weak earthquakes 0-5 km beneath the active lava dome. Gas-and-steam plumes rose ~3 km a.s.l. Shiveluch remained at Concern Color Code Concern Color Code Orange.
Read allMi, 11. Aug 2004, 06:00
During 6-13 August, seismicity was above background levels at Shiveluch, with weak earthquakes occurring 0-5 km beneath the active dome. On several days gas-and-steam plumes rose to a maximum height of ~2.9 km a.s.l. Shiveluch remained at Concern Color Code Orange.
Read allMi, 4. Aug 2004, 06:00
Seismicity was above background levels at Shiveluch during 30 July to 6 August, with weak earthquakes occurring 0-5 km beneath the active lava dome. On 4 August at 1705 an ash plume rose ~5 km a.s.l. and drifted E. Shiveluch remained at Concern Color Code Orange.
Read allMi, 28. Jul 2004, 06:00
Seismicity was above background levels at Shiveluch during 22-30 July, with weak earthquakes occurring 0-5 km below the active lava dome. Gas-and-steam plumes rose to ~2.8 km a.s.l. on 28 and 29 July. Shiveluch remained at Concern Color Code Orange.
Read allMi, 14. Jul 2004, 06:00
Seismicity at Shiveluch remained above background levels during 9-16 July, with earthquakes up to M 1.75. Spasmodic tremor was recorded during the week. Shiveluch remained at Concern Color Code Orange.
Read allMi, 7. Jul 2004, 06:00
The lava dome continued to grow in Shiveluch's active crater. Gas-and-steam plumes were reported by KVERT on 2-3 July rising as high as 3.3 km a.s.l.; clouds obscured the volcano during 3-8 July. Seismicity was above background levels for 3-9 July. Shiveluch remained at Concern Color Code Orange.
Read allMi, 30. Jun 2004, 06:00
Seismicity was above background levels at Shiveluch during 25 June to 2 July, with several shallow earthquakes occurring beneath the active lava dome. Gas-and-steam plumes were seen rising to ~3.5 km a.s.l. Shiveluch remained at Concern Color Code Orange.
Read allMi, 23. Jun 2004, 06:00
Seismicity was above background levels at Shiveluch during 18-25 June. Shallow earthquakes up to M 1.75 were recorded, along with nearly continuous spasmodic tremor. Gas plumes rose to ~4 km a.s.l.
Read allMi, 9. Jun 2004, 06:00
Seismic activity remained above background levels at Shiveluch during 4-11 June, with several shallow earthquakes occurring beneath the active lava dome. According to visual and video observations from the town of Klyuchi, during 3-5 and 10 June, gas-and-steam plumes rose to 3.3-3.9 km a.s.l. and extended more than 10 km SE, E, W, and NW.
Read allMi, 2. Jun 2004, 06:00
Between 28 May and 4 June, seismic activity at Shiveluch was above background levels with many shallow earthquakes recorded. Continuous spasmodic tremor was recorded during 27-29 May with an increase in volcanic seismicity beginning on 29 May and continuing through 2 June. On 31 May a possible gas-and-ash plume rose to 5.5 km a.s.l. and on 27-28 May gas-and-steam plumes were observed rising up to ~2.5 km a.s.l. and drifting E.
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