October 26, 2019. EN. La Reunion : Piton de la Fournaise.

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October 26, 2019. EN. La Reunion : Piton de la Fournaise.

October 26 , 2019.



La Réunion , Piton de la Fournaise :

Activity Bulletin from Saturday, October 26, 2019 to 11:00 am (local time)

The eruptive activity that began on October 25, 2019 at Piton de la Fournaise at 2:40 pm local time continues. After 3 hours of stability, the intensity of the tremor (indicator of the intensity of the eruption) began a gradual decline that continues this morning (Figure 1).

Figure 1: Evolution of the RSAM (indicator of the volcanic tremor and the intensity of the eruption) between 04:00 (00:00 UTC) on October 25 and October 26 at 10:55 (06:55 UTC) on the GPS seismic station. (© OVPF / IPGP)

– Since the beginning of the eruption, 37 superficial superficial volcano-tectonic earthquakes have been recorded. No earthquakes were recorded in the area of the eruption.
– After a deflation of the building related to the transfer of magma that occurred on October 25, 2019, the summit area does not show any particular deformation signals.
– An overview of the eruption could be achieved this morning with the assistance of the police. This overview made it possible to carry out a first lava sampling, to confirm the decrease in intensity of the eruption as well as to evaluate more precisely the progress of the flows.

Figure 2: Active event on October 26, 2019 around 9:30 am (© OVPF / IPGP)

– This morning only a vent remains active with fountains 10 to 20 m high. Since yesterday the flow has joined the piton Tremblet and progressed on the flow of 2007. Downstream of piton Tremblet, the casting has forked to form a secondary arm whose front progresses in the forest north of the main casting. Around 8:30 this morning the 2 flow fronts were about 400 meters upstream of the RN2 and continued a very slow progression.

Coulées de lave au Piton de la Fournaise le 25 octobre 2019

Eruption 25 octobre 2019 au Piton de la Fournaise"Chaud devant"

Publiée par Tunnels de lave Réunion : Rando-Volcan sur Vendredi 25 octobre 2019

– Since the start of the eruption, cloud cover has only allowed inaccurate estimates of surface flows from satellite data via the HOTVOLC platform (OPGC – Clermont Auvergne University). These estimates fluctuated between 0 and 27 m3 / s (these measures were largely affected / diminished by cloud cover).

Alert level: Alert 2-2

Source : OVPF.  http://www.ipgp.fr/fr/ovpf/bulletin-dactivite-samedi-26-octobre-2019-a-11h00-heure-locale

Photos : OVPF.

Vidéo : Tunnels de lave Réunion : Rando-Volcan

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