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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 : #Actualités volcaniques
 Popocatépetl - the explosion plume at 9:34 am and 9:36 am local - photos WebcamsdeMexico
 Popocatépetl - the explosion plume at 9:34 am and 9:36 am local - photos WebcamsdeMexico

Popocatépetl - the explosion plume at 9:34 am and 9:36 am local - photos WebcamsdeMexico

The last 24 hours were calm at Popocatépetl, with 53 low-intensity exhalations accompanied by water vapor, gas and small amounts of ash, an explosion at 9:32 local with emission of a plume of ashes 1 km above the Crater, then dispersing on the State of Mexico. Nocturnal incandescence is observed at the crater.

Seismicity is marked by two volcano-tectonic earthquakes with magnitudes 1.6 and 1.4.

Provided by: Cenapred
 

Sabancaya - plume at 4200 m on 25.07.2017 / 6h47 - OVI-Ingemmet

Sabancaya - plume at 4200 m on 25.07.2017 / 6h47 - OVI-Ingemmet

The Sabancaya has been experiencing more frequent explosions since early July, accompanied by plumes of ash rising to more than 5,500 meters above the crater. The seismicity is characterized by hybrid earthquakes, and shows the fracturing of rocks and magmatic movements. The degassing of SO2 is also more consistent. The assembly illustrates the arrival of a quantity of new magma richer in gas.

Sources: OVI-Ingemmet and Nasa Aqua Modis

 Sabancaya - the plume and its shadow seen by the satellite Nasa aque Modis on July 26, 2017

Sabancaya - the plume and its shadow seen by the satellite Nasa aque Modis on July 26, 2017

 Sabancaya - the plume seen by the webcam and in thermal image on 27.07.2017 / 7:53 localOVI
 Sabancaya - the plume seen by the webcam and in thermal image on 27.07.2017 / 7:53 localOVI

 Sabancaya - the plume seen by the webcam and in thermal image on 27.07.2017 / 7:53 localOVI

At La Fournaise, the eruption continues according to a classic model, with a relatively constant intensity of the trémor and a tendency towards a rebound in inflation.

The eruptive cone reaches 20 meters and contains two active mouths, one of which is projected incandescent material 20-30 meters high, the other on the north wall of the cone which has built a small rampart on the west side .

The bad weather conditions do not allow a good observation by the webcams.

Sources: OVPF & Objectif volcan, via Laurent Perrier and Arthur Vaïtilingom
 

Piton de La Fournaise - Evolution of the RSAM (volcanic tremor and eruption intensity indicator) between 00:00 (20h UTC) on July 14th and 16h00 (12h00 UTC) on July 27th on the seismic station of RVL, located on The southern flank of the volcano. (© OVPF / IPGP)

Piton de La Fournaise - Evolution of the RSAM (volcanic tremor and eruption intensity indicator) between 00:00 (20h UTC) on July 14th and 16h00 (12h00 UTC) on July 27th on the seismic station of RVL, located on The southern flank of the volcano. (© OVPF / IPGP)

The seismic swarm that marks the Reykjanes peninsula on 26 July continues; 9 earthquakes between M 3 and 4 were recorded yesterday and this morning, felt in the Reykjanes peninsula and in the Reykjavik area.

Two earthquakes of M 3,2 and 4,5 were recorded on 26 July at Myrdalsjökull.

Source: IMO

 Seismic swarm on the Reykjanes peninsula 26.27, and 28 July in the morning - Doc. IMO 28.07.2017 / 6h35
 Seismic swarm on the Reykjanes peninsula 26.27, and 28 July in the morning - Doc. IMO 28.07.2017 / 6h35

Seismic swarm on the Reykjanes peninsula 26.27, and 28 July in the morning - Doc. IMO 28.07.2017 / 6h35

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