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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
 Meradalur - the lava flow near the camp on 04.05.2021 - photo Björgunarsveitin Þorbjörn

Meradalur - the lava flow near the camp on 04.05.2021 - photo Björgunarsveitin Þorbjörn

Meradalur - lava flow and delta on 04.05.2021 - photo Visir / Wilhem

Meradalur - lava flow and delta on 04.05.2021 - photo Visir / Wilhem

Some additional information to that of April 5 afternoon (see article: http://www.earth-of-fire.com/2021/04/opening-of-2-new-cracks-in-the-reykjanes-peninsula.html )

The fissure eruption that opened on April 5 around 12 p.m. in Geldingadalur is about 200 meters from the tent camp that the Þorbjörn rescue team has occupied in recent weeks. Members of the Þorbjörn team quickly went to the scene to take the tents and equipment to a safe place.

The lava emitted is very fluid and helped by the difference in level, the flow has reached the valley where it forms a small delta.

Meradalur - rapid evacuation of the camp - photo 05.04.2021 Björgunarsveitin Þorbjörn

Meradalur - rapid evacuation of the camp - photo 05.04.2021 Björgunarsveitin Þorbjörn

Meradalur - rapid evacuation of the camp - photo 05.04.2021 Björgunarsveitin Þorbjörn

Meradalur - rapid evacuation of the camp - photo 05.04.2021 Björgunarsveitin Þorbjörn

Reykjanes Peninsula - Landscape location of active sites - photos and captions / Iceland 360 ° VR - one click to enlarge

Reykjanes Peninsula - Landscape location of active sites - photos and captions / Iceland 360 ° VR - one click to enlarge

Measurements were made on the lava on April 5, using aerial photographs. No reliable estimate of the lava flow was obtained in the old craters, but the new fissure produced 7 cubic meters per second. The total flow (Geldingadalir + new crack) is now estimated at 10 cubic meters per second. The eruption therefore got bigger.

Reykjanes Peninsula - parameters of the eruption as of 05.04.2021 Doc. Iceland University

Reykjanes Peninsula - parameters of the eruption as of 05.04.2021 Doc. Iceland University

The area is considered dangerous, due to various factors: the possible opening without warning of new fractures, the constant pollution by volcanic gases, the difficult conditions encountered during the trail, to which are added the weather conditions (intense cold - 9 ° C, strong wind, sleet and / or snow). It remains closed for now, and we must focus on the webcams.

 

Sources: IMO, RUV, mbls, Visir, Almannavarnadeild ríkislögreglustjóra

Meradalur - lava flow and delta during the night and on 04.06.2021 / 06:38 - (new) webcam RUV - one click to enlarge
Meradalur - lava flow and delta during the night and on 04.06.2021 / 06:38 - (new) webcam RUV - one click to enlarge

Meradalur - lava flow and delta during the night and on 04.06.2021 / 06:38 - (new) webcam RUV - one click to enlarge

At the Soufrière of St. Vincent on April 5, a new swarm of volcano-tectonic (VT) earthquakes began at 6:38 am. The number and magnitude of these earthquakes increased until about 8:30 a.m., after which they continued at a fairly steady rate.

This swarm of VT earthquakes was located at a depth of about 6 km below the summit of the Soufrière. This is slightly deeper than the VT seismic activities recorded between March 22 and 25, which were located at depths of 3 to 5 km below the summit.

The largest VT earthquake occurred at 9:20 a.m. with a magnitude of 3.5 and was felt by residents living near the volcano. Other VT earthquakes may also have been felt.

The alert level remains at Orange.

NEMO also encourages residents, especially people living in communities near the volcano, to prepare in case it becomes necessary to evacuate at short notice.

 

Sources: UWI-SRC & Nemo

Soufriere de St. Vincent - the new dome surrounding the old one on 04/01/2021 - photo UWI-SRC, / Prof Robertson. - one click to enlarge

Soufriere de St. Vincent - the new dome surrounding the old one on 04/01/2021 - photo UWI-SRC, / Prof Robertson. - one click to enlarge

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