A small ash puff was released from Canlaon on 28 November at 0721. The puff rose to a height of ~100 m above the active crater and drifted SW. Associated volcanic tremor was recorded at Cabagnaan and Guintubdan stations.
Etna continued to erupt through 2 December. According to the Italy's Volcanoes website, during the afternoon on 1 December ash fell in Catania and surrounding areas, leading to the closure of Fontanarossa Airport. On the 2nd, explosive activity continued at two vents on Etna's upper S flank and lava was emitted from a third vent at the SW base of the large pyroclastic cone that formed during the first 5 weeks of activity.
According to news articles, Enzo Boschi, the head of INGV, stated that seismicity increased near Campi Flegrei Mar Sicilia a group of submarine volcanoes ~30 km S of Sicily, near Tunisia. Boschi stated, "The island could come back to the surface, but we'll have to wait and see. It could be a few weeks or months." The Stromboli On-Line website noted that similar statements have been made several times in the past couple of years.
During 27 November to 1 December, emissions of steam, gas, and ash continued at Tungurahua. Plumes rose to ~1 km above the volcano.
Volcanic and seismic activity at Soufrière Hills remained at moderate levels during 22-29 November. Growth of the active extruded lobe on the N side of the lava dome continued to produce rockfalls and small-to-moderate pyroclastic flows. Pyroclastic-flow activity was confined mainly to Tuitt's and White's Bottom ghauts, and also along the N edge of the Tar River Valley.
During 22-29 November, KVERT decreased the Concern Color Code at Shiveluch from Orange to Yellow. Seismicity remained above background levels during the report interval and seismic data indicated that there had been hot avalanches and eight ash-and-gas explosions in which clouds reached 1-2 km above the lava dome (the previous week there were 19 ash-and-gas explosions to 2-3 km above the lava dome). Weak intermittent spasmodic tremor was registered during 24-25 November.
During 26 November- 1 December, Reventador mainly emitted gas and steam and occasionally small amounts of ash, and seismicity was low. IG stressed to the public that the sulfuric odor in the city of Quito was not indicative of renewed volcanism. During a flight over the volcano on 27 November, IG scientists determined that reports of a second lava flow made the previous week were false; rather, a pyroclastic flow had descended the volcano's NE flank.
The eruption at Rabaul caldera's Tavurvur cone continued through 3 December. The intensity of ash emission changed on 30 November from very slow to slightly forceful, and the interval between eruptions increased. Occasional moderate eruptions produced ash clouds that reached heights of 1-1.5 km above the crater.
Wed, 27 Nov 2002, 06:00
Seismicity at Kliuchevskoi was above background levels during 21-24 November, and at background levels during 25-27 November. Each day during the report week 7 to 11 earthquakes occurred at a depth of ~30 km. Gas-and-steam plumes were observed rising to ~2 km above the crater and drifting N and NW.
Read allWed, 27 Nov 2002, 06:00
During 26 November-2 December at Kilauea, lava continued to flow into the ocean at low-to-moderate levels at the West Highcastle and Wilipe`a entries. West Highcastle was the more active of the two lava deltas, with sporadic explosions coming from one of its entry points. Several surface lava flows were visible on the coastal flat.
Read allWed, 27 Nov 2002, 06:00
Volcanic activity at Karangetang during 19-24 November consisted of low-level ash plumes rising above South and North craters. In addition, there was a significant increase in the number of volcanic earthquakes in comparison to the previous week. Karangetang remained at Alert Level 3 (on a scale of 1-4).
Read allWed, 27 Nov 2002, 06:00
Seismicity increased at Awu on 15 November, but during 19-24 November decreased back to "normal levels." There were no surface changes around the volcano's summit. Awu remained at Alert Level 2 (on a scale of 1-4).
Read allWed, 20 Nov 2002, 06:00
During 21-24 November, emissions of steam, gas, and ash continued at Tungurahua. Plumes rose to ~1 km above the volcano and incandescence was seen during some evenings. IG warned that lahars could be generated during heavy rain.
Read allWed, 20 Nov 2002, 06:00
During 14-20 November, seismicity remained above background levels at Shiveluch. During this interval, seismic data indicated that there had been hot avalanches and 19 ash-and-gas explosions in which clouds reached 2-3 km above the lava dome. Weak intermittent spasmodic tremor was registered during 14-17 November.
Read allWed, 20 Nov 2002, 06:00
According to OVPDLF, the eruption that began at Piton de la Fournaise on 16 November continued through at least 26 November. During 20-26 November, visual observations were largely hampered by inclement weather. Eruptive tremor was constant on the 20th and 21st, and fluctuated on the 22nd.
Read allWed, 20 Nov 2002, 06:00
During 22-25 November at Papandayan small-scale continuous ash-and-gas explosions occurred, sending plumes to 300-600 m above the volcano. Tremor, tectonic earthquakes, and shallow and deep-volcanic earthquakes were recorded. An eruption on the 20th produced a NE-directed blast that sent material as far as 2 km away from the crater, burning the crater-facing sides of trees as far as 400 m away.
Read allWed, 20 Nov 2002, 06:00
The 2002 Mt. Etna flank eruption that began on 27th October is continuing, after almost a month of activity. During this period several distinct phases of eruptive style have been observed.
Read allWed, 20 Nov 2002, 06:00
VSI increased the Alert Level at Awu on 15 November following an increase in seismicity. Normally four earthquakes occur per day at the volcano, but 32 volcanic earthquakes were recorded on 15 November during 0000-0900. No surface changes were observed around the volcano's summit.
Read allWed, 20 Nov 2002, 06:00
Activity at Soufrière Hills remained moderate during 15-22 November. The lava dome was not visible during the week due to cloudy conditions. Rockfalls and small pyroclastic flows were concentrated on the volcano's E and NE flanks.
Read allWed, 20 Nov 2002, 06:00
IG reported that during 20-25 November seismicity decreased at Reventador in comparison to the previous week and mostly gas-and-steam emissions occurred with little ash content. On 20 and 21 November 16 earthquakes were recorded each day, whereas about 150 earthquakes were recorded on each of the previous days. At this time gas-and-steam plumes reached to 2 km above the volcano and incandescence was sometimes visible within the crater.
Read allWed, 20 Nov 2002, 06:00
Very heavy ash emission was observed at Rabaul caldera's Tavurvur cone on 24 November. A low-level plume was produced and no ash was visible on satellite imagery. RVO advised on 25 November that ash emissions were continuing from Rabaul, but at a reduced rate in comparison to previous weeks.
Read allWed, 20 Nov 2002, 06:00
Seismicity remained above background levels at Kliuchevskoi during 15-22 November. The number of deep earthquakes decreased from 26 to 9 during 14-17 November, and remained at nine during the 17th to 20th. Gas-and-steam plumes were seen rising to 1-2 km above the crater and drifting to the W.
Read allWed, 20 Nov 2002, 06:00
During 21-24 November at Kilauea, lava continued to enter the sea at several points along two lava deltas (West Highcastle and Wilipe`a), although to a lesser extent than the previous week. Small-to-moderate littoral explosions were common at the entry point near the tip of the West Highcastle delta. Surface flows were visible extending from Paliuli to the coast.
Read allWed, 20 Nov 2002, 06:00
Seismicity remained above background levels at Karymsky during 15-22 November, with 200-220 local shallow events recorded per day. The character of the seismicity indicated that ash-and-gas explosions rose to 1-2 km above the volcano and vigorous gas emissions lasting 5-10 minutes possibly occurred. On 20 November at 1157 a 20-minute-long seismic event was taken to indicate the possible occurrence of ash explosions up to 1 km above the crater and hot avalanches.
Read allWed, 20 Nov 2002, 06:00
The Concern Color Code at Bezymianny was reduced from Yellow to Green during 15-22 November. No seismic activity was recorded and satellite images revealed only a very weak thermal anomaly. KVERT stated that this hot spot may indicate hot gas emission from the lava dome.
Read allWed, 13 Nov 2002, 06:00
Volcanic activity continued at Pago and residents in relatively low-risk areas near the volcano were told it was safe to return to their homes according to a news article. The eruption of Pago began in August, leading to the evacuation of 12,000-15,000 residents.
Read allWed, 13 Nov 2002, 06:00
During 11-14 November, seismicity remained above background levels at Shiveluch. During this interval, seismic data indicated that there had been hot avalanches and seven ash-and-gas explosions in which clouds reached 2-3 km above the lava dome. Weak intermittent spasmodic tremor was registered.
Read allWed, 13 Nov 2002, 06:00
During 12-16 November, seismic and volcanic activity continued at Reventador. Constant tremor, and hybrid and volcanotectonic earthquakes were recorded. On 12 November a column of steam and ash was seen rising 6-7 km above the volcano and drifting to the W.
Read all
