Mi, 26. Dez 2001, 06:00
During 21-28 December, about 20 earthquakes with magnitudes greater than or equal to 1.7 occurred, and weak, shallow seismic signals (possible collapses and avalanches) were registered. Seismicity decreased slightly, but remained above background levels. Small gas-and-steam plumes rose above the lava dome.
Mi, 19. Dez 2001, 06:00
During 14-21 December, more than 40 earthquakes with magnitudes greater than or equal to 1.7 occurred, and weak, shallow seismic signals (possible collapses and avalanches) were registered. The largest earthquake was M 3. Several gas-and-steam plumes were produced from explosions, with the highest reported plume rising 3.5 km above the lava dome on 20 December at 1618 and drifting to the W.
Mi, 12. Dez 2001, 06:00
During 7-14 December more than 40 earthquakes with magnitudes greater than or equal to 1.7 occurred, and weak, shallow seismic signals (possible collapses and avalanches) were registered. On 8, 10, and 13 December gas-and-steam plumes rose 1-2 km above the dome. Thermal anomalies in the active dome area were visible on satellite imagery.
Read allMi, 5. Dez 2001, 06:00
A lava dome continued to grow in Shiveluch's active crater, and seismic activity remained above background levels. Many weak, shallow earthquakes occurred within the volcano's edifice, along with about 30 earthquakes with magnitudes greater than or equal to 1.7. Other local shallow seismic events (possible collapses, avalanches, or possible weak gas-ash explosions) and episodes of weak volcanic tremor were registered.
Read allMi, 28. Nov 2001, 06:00
During 23-30 November a lava dome continued to grow in Shiveluch's active crater, and small eruptions produced gas-and-steam clouds. The highest reported gas-and-steam cloud rose to 1.3 km above the dome on 27 November. Thermal anomalies in the active dome area were visible on satellite imagery.
Read allMi, 21. Nov 2001, 06:00
During 16-23 November a lava dome continued to grow in Shiveluch's active crater, and several eruptions produced ash, steam, and gas clouds. The highest reported ash cloud rose to 1-2 km above the dome on 19 November. Thermal anomalies in the active dome area were visible on satellite imagery.
Read allMi, 14. Nov 2001, 06:00
During 9-16 November a lava dome continued to grow in Shiveluch's active crater and several steam, gas, and ash explosions occurred. Seismic data suggested emissions from these explosions rose to a maximum height of ~4 km above the dome. A short-lived explosion on 9 November at 1200 produced an ash plume that was observed from Klyuchi, ~46 km from the volcano, rising ~1 km above the dome.
Read allMi, 7. Nov 2001, 06:00
During 2-9 November a lava dome continued to grow in Shiveluch's active crater, and several eruptions produced ash, steam, and gas clouds. Inclement weather prevented visual observations of several possible gas-and-ash eruptions on 7 November. However, seismic data suggested these eruptions produced clouds that rose to 6.5-7.5 km.
Read allMi, 31. Okt 2001, 06:00
During 26 October-2 November, a lava dome continued to grow in Shiveluch's active crater. The evening of 29-30 October incandescent avalanches were observed travelling down the W and SW slopes of the lava dome. Gas-and-steam plumes rose ~1.5 km above the dome on 30 and 31 October.
Read allMi, 24. Okt 2001, 06:00
During 19-26 October, a lava dome continued to grow in Shiveluch's active crater. An explosion during 22-23 October produced a steam-and-gas plume visible from the town of Klyuchi, 46 km from the volcano, rising 4-4.2 km a.s.l. Thermal anomalies in the active dome area were visible on satellite imagery.
Read allMi, 17. Okt 2001, 06:00
During 12-19 October, a lava dome continued to grow in Shiveluch's active crater and several gas-and-steam plumes were observed. The highest reported gas-and-steam plume was produced by an explosion on 17 October at 1740; it rose 1.2 km above the dome and extended 3 km to the W. Thermal anomalies in the active dome area were visible on satellite imagery.
Read allMi, 10. Okt 2001, 06:00
During 6-12 October a lava dome continued to grow in Shiveluch's active crater, and several eruptions produced ash and steam-and-gas clouds. The highest reported steam-and-gas cloud was produced from an eruption on 9 October at 1630 and rose 2 km above the dome. On 10 October at 2250 the reflection from incandescent lava was visible on the dome.
Read allMi, 3. Okt 2001, 06:00
During 28 September to 6 October a lava dome continued to grow in Shiveluch's active crater, and several eruptions produced ash and steam-and-gas clouds. The highest reported ash clouds were produced from eruptions on 1 October at 1641 and 1654. The ash plumes rose to 7 and 7.5 km above the volcano, respectively, and deposited a few millimeters of ash in Klyuchi town, 46 km from the volcano.
Read allMi, 26. Sep 2001, 06:00
During 28-29 September seismic activity was above background levels and weak, shallow seismic signals (possible collapses and avalanches) were registered. Several small explosions occurred on 30 September, sending ash clouds to the following heights above the dome: 2.5 km at 1323, 3.5 km at 1719, 2.5 km at 1755, and 4.5 km at 1807. An explosion at 2010 produced an umbrella-shaped ash cloud that rose 9 km above the lava dome and extended ~9 km E to W.
Read allMi, 19. Sep 2001, 06:00
During 14-21 September several steam-and-gas clouds were observed, as were ash clouds produced from explosions at Shiveluch, with the highest ash cloud rising 1.1 km above the lava dome. During the week hot avalanches from the summit of the dome were also noted. Seismic activity was above background levels and spasmodic volcanic tremor and weak, shallow seismic signals (possible collapses and avalanches) were registered.
Read allMi, 12. Sep 2001, 06:00
During 7-14 September several gas-and-ash plumes produced from explosions at Shiveluch were observed, with the highest rising 1.2 km above the dome. On 11 September several hot avalanches were observed travelling from the top of the lava dome. On 12 September explosions produced a short pyroclastic flow and an ash plume that rose to 1 km above the dome.
Read allMi, 5. Sep 2001, 06:00
Seismic activity was above background levels during 31 August-7 September. Spasmodic volcanic tremor and weak, shallow seismic signals (possible collapses and avalanches) were registered the entire week. Several gas-and-steam plumes were observed, with the highest rising 1.2 km above the dome.
Read allMi, 29. Aug 2001, 06:00
Seismic activity was above background levels during 24-31 August. Weak shallow earthquakes within the volcano's edifice and signals that may have represented short-lived explosions were recorded. Thermal anomalies were visible on satellite imagery. The volcano remained at Concern Color Code Orange.
Read allMi, 22. Aug 2001, 06:00
Seismic activity was above background levels during the week. Spasmodic volcanic tremor and weak, shallow seismic signals (possible collapses and avalanches) were registered. Several small explosions produced gas-and-steam plumes that rose to a maximum height of 2 km above the dome.
Read allMi, 15. Aug 2001, 06:00
Seismic activity remained above background levels during the week and included several small earthquakes. On 15 August volcanic tremor decreased gradually to background levels. Observers in Klyuchi reported that on 11 August gas-and-steam plumes rose 1.2-1.5 km above the dome.
Read allMi, 8. Aug 2001, 06:00
During the week seismic activity remained above background levels, with many small earthquakes occurring within the volcano's edifice and several different seismic signals (explosion, avalanche, collapse) recorded locally. Small gas-and-steam plumes rose to 200 m above the dome. Thermal anomalies were seen in several areas on satellite imagery.
Read allMi, 1. Aug 2001, 06:00
During the week seismic activity remained above background levels, with many small earthquakes occurring within the volcano's edifice and several different seismic signals (explosion, avalanche, collapse) recorded locally. The level of continuous spasmodic volcanic tremor increased on 28 July and again on 30 July. Gas-and-steam plumes were observed rising to a maximum height of 1 km above the dome and on the night of 1 August ash fell in the town of Klyuchi, 46 km from the volcano.
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