Volcanos

Roundup of Global Volcanic Activity - New Activity for the week 2 November - 8 November 2022

Bezymianny - Central Kamchatka (Russia) : KVERT reported that during 27 October-1 November a thermal anomaly over Bezymianny was identified in satellite images. Strong fumarolic activity was visible, the lava dome continued to grow and was sometimes incandescent at night, and occasional collapses from the dome produced avalanches of hot material. The activity had significantly decreased by 2 November.

Kerinci - Central Sumatra : PVMBG reported that diffuse white-and-brown plumes from Kerinci rose as high as 400 m above the summit and drifted NE and NW on most days during 2-7 November.

Manam - Northeast of New Guinea : The Darwin VAAC reported that on 7 November an ash plume from Manam rose to 2.1 km (7,000 ft) and drifted NE based on satellite images and weather models. The plume had dissipated within four hours.

Villarrica - Central Chile : SERNAGEOMIN and Observatorio Argentino de Vigilancia Volcánica (OAVV) reported that activity at Villarrica increased during 1 October-7 November. Seismic signals indicated above-baseline activity, including intensifying continuous tremor and an increase in the number of long-period earthquakes. The largest earthquake was a M 2.3 event located 5.3 km ESE of the crater at a depth of 4.8 km. Acoustic data indicated that explosions became larger. Sulfur dioxide emissions recorded on two stations, 10 km ENE and 6 km ESE, averaged around 541 tons per day, with a maximum value of 1,273 tons per day on 13 October; the values were within normal ranges, though they were preceded by two months with high values. Sulfur dioxide emissions were identified in satellite images on 1 November. The lava lake occupied an area of about 36 square meters on the crater floor based on a 14 October satellite image. During October webcam images showed eruption plumes rising as high as 460 m above the crater rim. Plumes deposited tephra on the E, S, and SW flanks within 500 m of the crater on 2, 18, 23, and 31 October. Nighttime crater incandescence seen in webcam images intensified during 1 October-7 November, and strombolian explosions ejected incandescent tephra onto the NW and SW flanks on 18 and 31 October and during 1, 2, and 6-7 November. Thermal anomalies were identified in satellite images on 2, 10, 15, 22, 27, and 31 October, and 1, 4, and 6 November. POVI reported that the width of lava fountains rising above the crater rim on 2 November suggested that the vent on the crater floor was about 6 m in diameter. Analysis of satellite images and reports from observers indicated that more material was being ejected onto the upper flanks in November, with clasts up to 20 cm in diameter and deposits trending NW. On 8 November SERNAGEOMIN raised the Alert Level to Yellow (the second lowest level on a four-color scale) and warned that material could be ejected within 500 m of the crater.