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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

Etna and Stromboli volcanoes celebrate the passing of the season in their own way.

Etna SEC - lava fountain 600-700 m high. on 06.20.2021 -photo Boris Behncke / INGV

Etna SEC - lava fountain 600-700 m high. on 06.20.2021 -photo Boris Behncke / INGV

From 21:00 UTC a modest Strombolian activity resumed at the southeast crater of Etna, and around 21:53 UTC, a sudden increase in Strombolian activity is observed with a fall of the products on the external slopes of the CSE crater. In addition, the continuous emission of ash produced by the current activity, according to the forecast model, is dispersed in the direction of SEE.
From 10:15 p.m. UTC, the Strombolian activity of the southeast crater turned into a lava fountain 600-700 m high. The moonlit eruptive column, bent east-south-east, reached a height of 8-9 km. In addition, there is an overflow of lava to the southwest.
The National Institute of Geophysics and Volcanology, Etneo Observatory, reports at 00:13 that from the images of the surveillance cameras, we observe that the explosive activity at the level of the Southeast Crater has ceased, the overflow of lava which s The extension in a southwest direction is still active.

Etna SEC - fountaining on June 20 and 21, 2021 - new webcam LAVE - one click to enlargeEtna SEC - fountaining on June 20 and 21, 2021 - new webcam LAVE - one click to enlarge

Etna SEC - fountaining on June 20 and 21, 2021 - new webcam LAVE - one click to enlarge

Etna - lava fountain and eruptive plume from 06.21.2021 - photo Boris Behncke

Etna - lava fountain and eruptive plume from 06.21.2021 - photo Boris Behncke

Etna - trémor at 06.21.2021 / 05h - Doc. INGV OE

Etna - trémor at 06.21.2021 / 05h - Doc. INGV OE

Etna- summit craters and lava flows of the SEC - image Sentinel-2 bands 12,11,4 di 18.06.2021

Etna- summit craters and lava flows of the SEC - image Sentinel-2 bands 12,11,4 di 18.06.2021

The National Institute of Geophysics and Volcanology, Etneo Observatory, reports that a modest lava overflow occurred in the northern sector of Stromboli; the phenomenon started at 04:05 UTC on June 21, 2021 and sold out within minutes. The lava front cools and it affects only the upper part of the Sciara del Fuoco.

 

Source: INGV OE

Stromboli - trace of the cooling lava flow on 06.21.2021 / 05.59 a.m. - INGV webcam

Stromboli - trace of the cooling lava flow on 06.21.2021 / 05.59 a.m. - INGV webcam

During a follow-up by the security team for the Krakatau Islands Nature Reserve and Marine Nature Reserve on June 19, 2021, the teams observed a white plume, occasionally gray, at the main crater, more or less less thick about 25-100 meters from the summit. The weather is cloudy to rainy,
In general, the condition of the area is monitored to be sure that there are no disturbances that can directly damage the area, but there are still traditional fishermen passing through the area.

Activity level remains at 2 / waspada

 

Sources: 2021.06.19 Anak Krakatau - degassing & Magma Indonesia

Anak Krakatau - thick degassing on 06/19/2021 - photo @krakatau_ca_cal

Anak Krakatau - thick degassing on 06/19/2021 - photo @krakatau_ca_cal

On the Nátthaga lava field, created by the eruption in Geldingadalur, an opening (a skylight) has formed. A drone video shows a river of lava, flowing below the surface of the lava field.
This indicates the presence of a complex network of lava flows which flow under the lava field itself in more or less large tubes / tunnels, and allows this fluid lava on a long journey while keeping its temperature high.

 

Sources: mbls & video Donce Monce

Lava river under the solidified crust of the lava field in Nátthaga - June 20, 2021 - video Donce Monce

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