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Volcanic activity worldwide 27 Feb 2020: Stromboli volcano, Klyuchevskoy, Popocatépetl, Merapi, Ibu...

Thursday Feb 27, 2020 21:00 PM | BY: SEVERAL CONTRIBUTORS

Map of today's active volcanoes
Map of today's active volcanoes
Weak eruption from Stromboli this evening (image: INGV Catania webcam)
Weak eruption from Stromboli this evening (image: INGV Catania webcam)
Deformation (inflation) of some points in the Campi Flegrei caldera (image: INGV OV)
Deformation (inflation) of some points in the Campi Flegrei caldera (image: INGV OV)
Sentinel 2 satellite image of Klyuchevskoy
Sentinel 2 satellite image of Klyuchevskoy
Satellite image of Aso volcano on 27 Feb 2020
Satellite image of Aso volcano on 27 Feb 2020
Satellite image of Sakurajima volcano on 27 Feb 2020
Satellite image of Sakurajima volcano on 27 Feb 2020
Eruption of Sakurajima volcano this morning (image: JMA webcam)
Eruption of Sakurajima volcano this morning (image: JMA webcam)
Satellite image of Suwanose-jima volcano on 27 Feb 2020
Satellite image of Suwanose-jima volcano on 27 Feb 2020
Satellite image of Ibu volcano on 26 Feb 2020
Satellite image of Ibu volcano on 26 Feb 2020
Merapi volcano on 22 February (image: PVMBG)
Merapi volcano on 22 February (image: PVMBG)
A plume from Shishaldin volcano from satellite yesterday (image: Sentinel 2)
A plume from Shishaldin volcano from satellite yesterday (image: Sentinel 2)
Stromboli (Eolian Islands, Italy): The activity of the volcano has dropped during the past 2 days, at least judging from the frequency and intensity of strombolian explosions, which were much lower than during most of the previous months.
Strombolian activity was characterized by low pressure and came mainly from the NE crater vent, while puffing and degassing prevails at the SW and central vents.
Other parameters monitored classify the activity as medium. Tremor amplitude was stable, while seismic activity of so-called long-period quakes remained high.

Campi Flegrei (Phlegrean Fields) (Italy): The latest report of the Vesuvius Volcano Observatory (INGV OV) shows that inflation of the Pozzuoli area continues at steady rates of up to 0,7 cm per month, totaling over 10 cm during the past 10 years for some places.
Seismic and degassing activity have not shown significant variations during the past month and have been at normal levels.

Klyuchevskoy (Kamchatka): We received a note from our correspondent Yuri Demyanchuk, head of the volcano observatory in Klyuchi, that the volcano's activity - strombolian eruption in the summit crater - has increased in the past days and that a lava flow has started on the upper SE flank.
While satellite imagery from 25 Feb does not yet show this and no other visual confirmation is available at the moment, we're keeping a close eye on the situation.
If activity continues to increase, we might be able to organize a volcano special tour (contact us if interested) in the near future.

Aso (central Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ACTIVITY CONT. VA AT 20200227/1800Z FL060 EXTD SE OBS VA DTG:27/1750Z

Sakurajima (Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20200227/1415Z OVER FL060 STNR OBS VA DTG:27/1400Z
...27 Feb:
The volcano has been very active during the past days. Yesterday, 3 explosions occurred that produced ash plumes that rose up to 12,000 ft (4 km) altitude.
At night, constant glow is visible from the summit crater Minamidake.
Seismic and degassing activity are also elevated, suggesting that magma continues to rise inside the volcano.

Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20200227/1630Z FL050 EXTD W OBS VA DTG:27/1620Z

Ibu (Halmahera, Indonesia): (26 Feb) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 .
The full report is as follows: DISCREATE VA OBS TO FL070 MOV SW OBS VA DTG:26/2320Z to 7000 ft (2100 m)

Merapi (Central Java, Indonesia): PVMBG reported that the volume of the volcano’s summit lava dome decreased after the 13 February eruption that generated an ash plume which reached approx. 26,561 ft (2,000 m) altitude. The dome volume the day before the event was estimated at 407,000 cubic meters, and afterwards on 19 February was reduced to 291,000 cubic meters.
Material were ejected to an approximate height of 3,280 ft (1,000 m) and caused ashfall within a 10 km radius.
... [read more]

Dukono (Halmahera): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: CONTINUOUS VA EMISSION TO FL070 EXT SSW EST VA DTG:27/1900Z

Shishaldin (Aleutian Islands, Alaska): The Alaska Volcano Observatory (AVO) recorded warm surface temperatures in the summit crater identified in satellite data, which is consistent with cooling lava deposits.
No significant activity detected in seismic data over the past day.
... [read more]

Semisopochnoi (United States, Aleutian Islands): (26 Feb) The alert level of the volcano was lowered to yellow, as no recent eruptive activity was detected on high-resolution satellite data from yesterday afternoon, the Alaska Volcano Observatory (AVO) reported (AVO):
"... no signs of eruptive activity or recent ash deposits at Semisopochnoi. Although seismic activity remains above background, it does not appear to be increasing towards an eruption in the short-term. Thus, AVO is reducing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.
Unrest continues. Seismic activity persists and is characterized by short bursts of volcanic tremor and earthquakes. Explosive activity could resume with little to no warning." (AVO)

Great Sitkin (United States, Aleutian Islands): (26 Feb) Over the past month, earthquake activity has increased at Great Sitkin Volcano and is now above background levels.
Thus, AVO is increasing the Aviation Color Code to YELLOW and the Alert Level to ADVISORY. There has been no evidence of eruptive activity in geophysical data streams or in satellite observations. (Alaska Volcano Observatory notice)

Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 19000 ft (5800 m) altitude or flight level 190 .
The full report is as follows: OCNL VA EMS OBS IN SUMMIT WEB CAM AT 1400Z to 19000 ft (5800 m)

San Miguel (El Salvador): (27 Feb) The Servicio Nacional de Estudios Territoriales (SNET) reported that locals observed a series of noises during 20 February at 19:00 local time to 21 February at 07:50 local time.
On 22 February at 10:55 local time recorded an ash and gas plume that rose 1,312 ft (400 m) above the crater rim.
... [read more]

Nevado del Ruiz (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NEW VA EM.

Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 .
The full report is as follows: VA CLDS OBS IN STLT IMAGERY AT 1240Z to 20000 ft (6100 m)

Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: LIGHT VA CLD OBS IN STLT IMAGERY AT 1930Z

Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 23000 ft (7000 m) altitude or flight level 230 and is moving at 05 kts in NW direction.
The full report is as follows: SPORADIC PUFFS to 23000 ft (7000 m)

Planchón-Peteroa (Central Chile and Argentina): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: VA REPORT AT 1855Z
Previous news
Map of today's active volcanoes
Tuesday, Feb 25, 2020
Klyuchevskoy (Kamchatka): KVERT recorded a moderate explosions at the volcano that generated an ash plumes which reached approx. 16,400 ft-23,000 ft (5,000 m-7,000 m) altitude and drifted 84 km away towards the E direction. Strombolian activity continues from the summit crater. ... [more]
Map of today's active volcanoes
Monday, Feb 24, 2020
Reykjanes (Reykjanes peninsula (SW Iceland)): (24 Feb) The Icelandic Met Office (IMO) reported that the CO2 emissions reached hazardous levels and low levels of O2 were measured at the cave (popular for hikers) in the Eldvörp area on the Reykjanes Peninsula on 20 February. ... [more]

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