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Earth of fire

Actualité volcanique, Articles de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié le par Bernard Duyck
Publié dans : #volcanic activity
Klyuchevskoy - gas and ash plume on 02.10.2020 / 6.30am - IVS FEB RAS KVERT webcam

Klyuchevskoy - gas and ash plume on 02.10.2020 / 6.30am - IVS FEB RAS KVERT webcam

According to video data, Strombolian activity of the Klyuchevskoy volcano began to be observed from 10:03 p.m. UTC on October 1, 2020, and this activity continues. The explosions send ash up to 300-400 m above the crater of the volcano (about 5 km above sea level), a gas-vapor plume containing a certain amount of ash descends along the slope from the volcano to the east. An ash plume is not detected on satellite images at this time.

A moderate explosive eruption of the volcano is likely to continue. Ash explosions up to 5-6 km altitude could occur at any time. Ongoing activities could affect low-flying planes.

The aviation color code has changed to yellow.

 

Source: KVERT

 Etna NSEC from Linguagossa - ash emission  of 01.10.2020 - photo Salvatore Lo Giudice

Etna NSEC from Linguagossa - ash emission of 01.10.2020 - photo Salvatore Lo Giudice

The National Institute of Geophysics and Volcanology, Etneo Observatory, announces that the previously reported increase in explosive activity at the new south-eastern crater of Etna occurred between 8:00 a.m. and 9:30 a.m. local time. The modest eruption of ash produced an eruptive cloud about 4.5 km above sea level.

Strombolian activity remains, accompanied by discontinuous ash emissions quickly dispersed in the summit area.

The amplitude of the volcanic tremor, in slight increase, shows fluctuations between the medium-high levels. Infrasound events associated with ongoing explosive activity are observed.

Etna's soil deformation monitoring networks show no significant variation.

 

Source : INGV OE - 01.10.2020 11:34 a.m. loc.

Etna NSEC - continuation of Strombolian activity on 01.10.2020 / 22:28 and 02.10.2020 / 01:28 - LAVE webcam - one click to enlarge Etna NSEC - continuation of Strombolian activity on 01.10.2020 / 22:28 and 02.10.2020 / 01:28 - LAVE webcam - one click to enlarge

Etna NSEC - continuation of Strombolian activity on 01.10.2020 / 22:28 and 02.10.2020 / 01:28 - LAVE webcam - one click to enlarge

In September 2020, the University of Utah Seismographic Stations, responsible for operating and analyzing the Yellowstone Seismic Network, located 205 earthquakes in the Yellowstone National Park area. The most significant event was a minor magnitude 2.8 earthquake 9 miles south-southeast of West Thumb in Yellowstone National Park on September 10 at 7:26 a.m. PT.

A swarm of 125 earthquakes occurred September 10-16, about 9 miles south-southeast of West Thumb. The swarm consisted of 29 magnitude 2 events, including eight greater than M2.5 and 69 magnitude 1 events.

Earthquake sequences like these are common and account for about 50% of the total seismicity in the Yellowstone area.

Yellowstone's seismic activity remains at background levels.

The subsidence of the Yellowstone caldera, underway since 2015, has continued at an average rate of 2-3 cm per year. In the Norris Geyser Basin area, little deformation has been detected by a nearby GPS station since early 2020.

The Steamboat Geyser continues to be active, with four eruptions during the month: September 1, 9, 16 and 26. This brings the total number of eruptions for the year to 38.

 

Current volcanic alert level: NORMAL

Current Aviation Color Code: GREEN

 

Source: YVO

Yellowstone National Park- Yellowstone Lake, seen from West Thumb - photo © Bernard Duyck archives

Yellowstone National Park- Yellowstone Lake, seen from West Thumb - photo © Bernard Duyck archives

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