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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
Piton of La Fournaise - 17.02.2019 / 4:30 UTC - webcam Piton Partage / OVPF

Piton of La Fournaise - 17.02.2019 / 4:30 UTC - webcam Piton Partage / OVPF

Since 15:21 local time on February 16, 2019, a seismic crisis is recorded on the instruments of the Volcanological Observatory of Piton de la Fournaise. This seismic crisis is accompanied by rapid deformation, indicating that the magma is leaving the magma reservoir and spreading to the surface. An eruption is likely in the near future in the next minutes or hours.

Switching to alert 1, as of today at 16:30 - likely eruption in the near future. As a result, public access to the upper part of the Piton de la Fournaise enclosure, whether from the Pas de Bellecombe trail or from any other trail is prohibited. It is recalled that the landing of aircraft in the area of ​​the volcano is regulated and subject to authorization from the Prefecture. The National Gendarmerie and the National Forestry Office have been tasked to ensure the implementation of these security measures on the site.

Piton de la Fournaise  - 17.02.2019 / 6h27 Tu - webcam Piton de Bert / OVPF

Piton de la Fournaise  - 17.02.2019 / 6h27 Tu - webcam Piton de Bert / OVPF

Second bulletin at 19h local:

Following the seismic crisis started on 16/02/2019 at 15h21 local time, the number of earthquakes has decreased sharply since 16h18 local time.
The surface deformations stopped at around 16:30, meaning that the magma intrusion was stopped in depth. On the other hand a seismicity of 7 to 10 events per hour located under the crater Dolomieu continues meaning that the roof of the tank continues to be weakened.

 

Number of volcano-tectonic earthquakes (VT) from 16-02-2019: 378 - area affected by VT: Cone summit

Volcano-tectonic earthquake of greater magnitude of 16-02-2019: Duration: 14.64 s - Magnitude of duration: 1.46


No hypothesis is ruled out for the moment as to the sequence of events:

1. recovery of this spread of magma towards the surface,

2. new spread of magma from the reservoir to the surface,

3. stopping the spread.

Editor's note: if the alternation of eruptive sites is maintained, an eruption could occur on the northern flank of the volcano.

 

Source: Reunion Prefecture & OVPF

Find all the information related to the Piton de la Fournaise activity on the different media of the OVPF-IPGP:

- the website (http://www.ipgp.fr/fr/ovpf/actualites-ovpf),

- the Twitter account (https://twitter.com/obsfournaise?lang=en),

- and the facebook account (https://www.facebook.com/ObsVolcanoPitonFournaise/)

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