Volcanic activity worldwide 29 Dec 2016: Stromboli volcano, Fuego, Klyuchevskoy, Colima, Shiveluch, ...
Donnerstag Dez 29, 2016 20:00 |
Map of today's active volcanoes
Stromboli's crater terrace this morning with glow from the central vent (image: INGV Catania Pizzo webcam)
Ash emissions from Etna's SE crater on 25 Dec 2016 (image: Boris Behncke / @etnaboris / twitter)
Klyuchevskoy with a small steam plume this morning
Phreatic explosion at Bulusan this afternoon (image: PHILVOLCS)
Satellite image of Bulusan volcano on 29 Dec 2016
Heat signal from Bagana volcano (MIROVA)
Heat sources on Langila volcano (MODIS, Univ. Hawai'i)
Explosion at Sinabung on 27 Dec 23:30 local time (image: Endro Lewa / facebook)
Satellite image of Dukono volcano on 29 Dec 2016
Stromboli (Eolian Islands, Italy): The activity at the "Lighthouse of the Mediterranean" has been much more intense recently than during most of the year.
Vulcanian explosion at Colima yesterday night (photo: Hernando Rivera / facebook)
Explosions mainly from the eastern vent (towards Stromboli village) have been observed at intervals of approx. 10 minutes, ejecting dense jets of incandescent lava to up to estimated 150 m height.
Continuous glow can be seen from adjacent vents in the central crater area as well, suggesting a relatively high lava column inside the conduit.
Etna (Sicily, Italy): Small ash emission continue to occur sporadically from the "saddle vent" at the volcano's SE crater.
Klyuchevskoy (Kamchatka): Minor activity continues at the volcano. During (rare) clear weather views, a steam plume sometimes containing some ash can be seen from the summit crater.
Shiveluch (Kamchatka): KVERT reported that during 10-16 December lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions, and hot avalanches.
Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted 370 km NNW during 16-20 December. A webcam recorded an explosion on 19 December with an ash plume that rose 7 km a.s.l. The Aviation Color Code remained at Orange.
(Smithsonian / USGS Weekly Volcanic Activity Report 21-27 December 2016)
Bezymianny (Central Kamchatka Depression): KVERT reported strong gas-and-steam emissions at Bezymianny during 16-23 December; a gas-and-steam plume drifted about 60 km SW on 18 December. A daily thermal anomaly was detected over the volcano. The Aviation Color Code remained at Orange.
(Smithsonian / USGS Weekly Volcanic Activity Report 21-27 December 2016)
Ebeko (Paramushir Island): The volcano remains site of minor activity although direct observations are sparse and only intermittent.
According to the lastest Smithsonian / USGS Weekly Volcanic Activity Report 21-27 December 2016, "KVERT reported that, according to observers in Severo-Kurilsk (Paramushir Island) about 7 km E, gas-and-steam plumes containing a small amount of ash rose from Ebeko to an altitude of 1.5 km (4,900 ft) a.s.l. and drifted 8 km N and NE on 17 and 20 December.
... [read more]
Mayon (Luzon Island, Philippines): PHILVOLCS reports continued light unrest from the volcano. During the past 24 hours, 8 volcanic earthquakes were detected. Visible activity consists of moderate degassing only.
Precise leveling survey and GPS results from late November 2016 indicate inflation of the edifice relative to May 2016. Other monitoring parameters show no significant variations.
Bulusan (Luzon Island, Philippines): A moderately strong phreatic explosion occurred this afternoon at the volcano at 14:40 local time, lasted approx. 16 minutes and produced an ash plume that rose 2000 m.
PHILVOLCS reported increased seismic activity during 22-25 Dec preceded the event which seems to be the result of destabilization of the shallow hydrothermal system. GPS data also indicate slight inflation of the volcanic edifice, indicating internal pressurization (likely caused by an underlying magma body).
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20161229/0655Z FL120 REPORTED OBS VA DTG:29/0700Z
Bagana (Bougainville Island, Papua New Guinea): The volcano's activity has decreased, judging from the decrease in heat emission, although minor ash emissions continue to be frequently observed on satellite imagery.
Darwin VAAC reported ash emissions during 22 and 25-27 December when ash plumes from the volcano rose to altitudes of 2.1-2.4 km (7,000-8,000 ft) a.s.l. and drifted 45-85 km S, SW, and WSW.
Langila (New Britain, Papua New Guinea): A new eruption is occurring at the volcano. Satellite data which show a strong thermal anomaly suggest lava extrusion probably on the northern summit area.
Mild ash emissions have been occurring during the past days as well, likely from strombolian activity.
Sinabung (Sumatra, Indonesia): The volcano's activity continues with no significant changes. Occasional incandescent rockfalls, small pyroclastic flows and vertical explosions, with ash plumes rising up to 3-4 km, accompany the slow growth of a viscous lava dome in the summit crater.
Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: GROUND REPORT OF ERUPTION TO FL120 AT 29/0233Z MOV TO SW.
Dukono (Halmahera): The activity from the volcano continues with little changes. Near continuous ash venting and strombolian explosions inside the summit crater produce ash plumes that reach 7-8,000 ft (2-2.4 km) altitude and drift into various directions and are being spotted by VAAC Darwin almost every day.
Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: CONTINUOUS VA EMISSIONS TO FL070 OBS VA DTG:29/1350Z
Bogoslof (United States, Aleutian Islands): The volcano remains in a state of elevated unrest, the Alaska Volcano Observatory (AVO) reported.
Although no new major explosions have occurred during the past days, the eruption seems to continue. According to AVO, "seismic data from neighboring islands detected an increase in volcanic tremor at the volcano beginning at 17:55 AKST yesterday (02:55 Dec 29 UTC), with the largest burst occurring at 18:07 AKST (03:07 Dec 29 UTC).
... [read more]
Colima (Western Mexico): The frequency of explosions has decreased a bit, but overall, the volcano's activity has not changed much.
The lava flow on the southern flank remains very weakly active (alimented by the dome in the summit crater).
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EM CONT
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ONGOING EMS
Fuego (Guatemala): (29 Dec) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: POSS VA EMS
Turrialba (Costa Rica): Intermittent small ash emissions continue to occur from the volcano. Not all of them are visible (due to weather), but can be inferred from seismic recordings and sometimes light ash falls in nearby downwind areas.
The most recent such episode was reported yesterday night at 22:12 local time.
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: LIGHT VA EM
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: RESUMPTION OF VA EMS
Sabancaya (Peru): The activity at the volcano remains intense and has not changed much over the past weeks. Frequent explosions (50-60 per day) produce ash plumes that rise up to 3-4000 m and drift into various directions before dissipating after reaching 20-50 km.
Light to moderate ash falls occur in the mostly uninhabited areas around the volcano.
Peru's Geophysical institute noted an increase in seismic activity related to ascent of magma, suggesting that the eruption is still on an increasing path and might be far from over soon.
Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: VA NOT IDENTIFIABLE
Lascar (Northern Chile): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: PILOT REPORT AT 1102Z OBS VA DTG:29/1145Z
Copahue (Chile/Argentina): The volcano continues to have some mild activity in the form of strong degassing and minor ash venting from likely phreatic activity.
Based on satellite and webcam images, the Buenos Aires VAAC reported that during 21-23 December gas-and-ash plumes from Copahue rose to altitudes of 3.6-3.9 km (12,000-13,000 ft) a.s.l. and drifted SE and ESE.
Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: CONTINUOUS EMISSIONS OF VA AND GASES
Nevados de Chillán (Central Chile): After several weeks of apparent calm, a new explosion occurred yesterday morning.
The event was probably phreatic in nature, caused by an unstable superficial hydrothermal system. Increased steaming can be noted since, suggesting that new explosions could occur with little warning.
Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: VA REPORTED AT 1450Z OBS VA DTG:29/1438Z
Erta Ale (Danakil depression, Ethiopia): Activity remains elevated at the volcano in the Danakil. The latest available information show simultaneous effusive activity from both the north and the south crater - the latter, which contained the famous lava lake has been overflowing and building a new lava shield that started to partially fill the summit caldera.
It seems that lava flows have started to overflow even outside the caldera through the low part of the rim on the NE side (judging from satellite data).
Our next Erta Ale Volcano Special tour is soon (on 14 Jan) leaving for the volcano to stay 4 days and nights. Participants will hopefully be able to provide fresh information from the field.
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