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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
Nevados of Chillan - 08.04.2019 / 04h03 loc. - image of a video of Sernageomin

Nevados of Chillan - 08.04.2019 / 04h03 loc. - image of a video of Sernageomin

The monitoring stations of Nevados de Chillan, in Chile, recorded on Monday, April 8 at 04:03 local an explosion at the main crater, accompanied by a local earthquake LP 3.4 at a depth of 1.360 meters; it caused falls of incandescent materials on the flanks.

At 8:45 local time, an LP earthquake is recorded at a depth of 900 m., Associated with an explosion that generated a plume of gas at 2,700 meters above the crater level.

Particulate material was found in the vicinity of the active crater and on the northern sector of the volcano.

The technical alert remains orange.

 

Source: Sernageomin

Villarica - Strombolian activity of 7 and 8 April 2019 - Doc. Povi

Villarica - Strombolian activity of 7 and 8 April 2019 - Doc. Povi

In Villarica, the frequency of Strombolian explosions and the height of ballistic ejections is increasing; some reach 50 meters above the edges of the crater.

The observation of a change of inclination of the upper part of the chimney would justify a trajectory of the spatters of lava to the east.

The geomorphology and the area of ​​the "hot" zone at the bottom of the crater has been stable for 5 months.

The seismic energy oscillates between a low level and a medium level.

 

Source: Werner Keller - volcanologist in charge of information at POVI

Bromo - ash plume of 06.04.2019 / 05h49 - PVMBG / Magma Indonesia

Bromo - ash plume of 06.04.2019 / 05h49 - PVMBG / Magma Indonesia

On Java, the Bromo issuing since April 6 a moderate plume, white to gray, rising to a maximum height of 900 meters above the summit.

The PVMBG reports 3 eruption earthquakes and a continuous tremor of dominant amplitude at 3mm for April 7; the seismographic recording of April 8 shows only a continuous tremor of amplitude between 0.5 and 31 mm.

The alert level remains at 2 / waspada, with a 1 km radius prohibited area around the crater and an orange VONA.

 

Source PVMBG

Banda Api - seismicity on 08.04.2019 - Doc. Magma Indonesia

Banda Api - seismicity on 08.04.2019 - Doc. Magma Indonesia

An increase in seismicity marks the Banda Api, the most northeastern volcano of the Sunda-Banda arc; the number of deep volcanic earthquakes and low frequency earthquakes is increasing.

The activity level is 2 / waspada, with a 1 km forbidden zone of activity around the upper crater.

The last eruption of Banda Api, from VEI 3, dates back to 1988; it caused three deaths and the evacuation of 700 people.

 

Source: Magma Indonesia

Yellowstone / Steamboat geyser - sismo of 08.04.2019 / 20:30 - Doc. Utah Quakes

Yellowstone / Steamboat geyser - sismo of 08.04.2019 / 20:30 - Doc. Utah Quakes

At Yellowstone, an important seismic signal marking the water eruption of the Steamboat geyser was recorded on April 8 from 8:30 pm, and saturated the seismogram until 10:00 pm. A discharge point is recorded at the Tantalus Creek gauge.

These eruptions do not have any implications for future volcanic activity at Yellowstone.

 

Sources: USGS and Utah Quake

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