Volcanic activity worldwide 2 Feb 2021: Fuego volcano, Klyuchevskoy, Popocatépetl, Semeru, Shiveluc...

Klyuchevskoy (Kamchatka): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA IS NOT IDENTIFIABLE IN SATELLITE IMAGERY.

Shiveluch (Kamchatka): Water is a key ingredient for fuelling explosive volcanic eruptions. Water-rich magma contains higher proportions of volatiles (gases), increasing buoyancy and therefore driving the upward movement of the magma to the surface. The increase in gases within the magma also increases the pressure, causing the explosive nature of eruptions with this magmatic composition.
New research published in Contributions to Mineralogy and Petrology has found that the world’s most active volcano, Shiveluch, located on the Kamchatka peninsula in Far Eastern Russia, contains much more water within its magma than previously suggested.
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This invaluable finding could help scientists gain better insight into other volcanic plumbing systems around the world, particularly of other notoriously explosive subduction zone volcanoes, as well as helping them further understand the global water cycle.
Shiveluch is the northernmost active volcano in the Central Kamchatka Depression, a segment of the Kamchatka volcanic arc located at the junction of the North American, Okhotsk, and Pacific tectonic plates. Shiveluch is composed of two eruptive centres, Old Shiveluch and Young Shiveluch. The Young Shiveluch volcanic centre is located within the crater formed by the catastrophic collapse of Old Shiveluch during the Late Pleistocene and it is this younger centre that is the site of all Holocene volcanism. Over the last 10,000 years, this eruptive centre has produced more than 60 large explosive eruptions - the last major blast occurred in 1964 (sub-Plinian eruption). Shiveluch is currently erupting, and it has been for over 2 decades (1999 – Present).


Ebeko (Paramushir Island): (1 Feb) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20210201/2251Z FL100 EXTD E REPORTED OBS VA DTG:01/2250Z

Sakurajima (Kyushu, Japan): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 9000 ft (2700 m) altitude or flight level 090 and is moving at 45 kts in E direction.
The full report is as follows: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY OBS VA DTG:02/1120Z to 9000 ft (2700 m)

Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20210202/1813Z FL060 EXTD SE OBS VA DTG:02/1810Z

Raung (East Java): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows: VA REPORTED TO FL140 AT 02/1655Z MOV E OBS VA DTG:02/1822Z to 14000 ft (4300 m)

Semeru (East Java, Indonesia): (2 Feb) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ERUPTION OBS BY GROUND OBSERVER OBS VA DTG:02/0015Z

Kilauea (Hawai'i): (2 Feb) Seismic station of the Hawaiian Volcano Observatory (HVO) recorded a volcano-tectonic earthquake with magnitude M 4.1 located beneath the southern flank of the volcano at depth 6 km (4 miles) at about 14:09 local time yesterday. The earthquake was centered about 13 km (8 miles) south of Fern Forest, near the Hōlei Pali area of Hawai'i Volcanoes National Park with weak to light shaking that has been reported across the Island of Hawai'i.
According to HVO scientist, David Phillips, the earthquake had no impact on the ongoing effusive eruption at Kīlauea's summit.
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Residents should be aware that possible aftershocks may be felt.
Kīlauea's south flank has been the site of over 30 earthquakes of magnitude-4.0 or greater during the past 20 years. Most are caused by abrupt motion of the volcano's south flank, which moves to the southeast over the oceanic crust. The location, depth, and waveforms recorded as part of today's earthquake are consistent with motion along the south flank detachment fault.


Popocatépetl (Central Mexico): (2 Feb) 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: to 19000 ft (5800 m)

Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: VA EM OBSD to 15000 ft (4600 m)

Sangay (Ecuador): (2 Feb) 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: CONS VA CLD. to 19000 ft (5800 m)

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 .
The full report is as follows: UNABLE TO DETECT to 23000 ft (7000 m)

Villarrica (Central Chile): The activity of the volcano remains stable at low levels characterized near-constant degassing from the crater. Emissions of water vapor and gases generated a white dense ash column rising several 300 m above the summit as can be seen in the video.
The small lava pond in the summit crater, first observed in Nov last year, has remained essentially unchanged.
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Its currently stable condition suggests that there is a delicate equilibrium between heat and magma supply and loss (through cooling and mild emissions during degassing).

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