Piton de la Fournaise volcano news & updates:
Piton de la Fournaise (La Reuion Island): OVPF-IGPG Monthly report of February 2020
Monday Mar 09, 2020 15:30 PM | BY: MATTHEW
Number of shallow volcano-tectonic earthquakes recorded in February 2020 (top). Number of deep volcano-tectonic earthquakes recorded in February 2020 (bottom) (© OVPF-IPGP).
The Piton de la Fournaise Volcanological Observatory have released their monthly report for the month of February 2020.
Photographs taken on February 13 around 12:00 local time (© PGHM-SAG).
During the month, there were 249 shallow volcano-tectonic earthquakes (0 – 2 km depth) below the summit craters, 11 deep earthquakes (>2 km depth) and 563 rockfalls (inside the Cratère Dolomieu or along the cliff of the Enclos Fouqué caldera and the Rivière de l’Est rampart). Around 4 earthquakes per day were occurring from February 1-9. Out of the 249 shallow volcano-tectonic earthquakes, 208 occurred on the morning of February 10 prior to the February 10-16 eruption. This “seismic crisis” lasted for around 30 minutes. After the eruption, the summit volcano-tectonic activity decreased with only 2 shallow earthquakes recorded between February 17-29. During this period however, 8 deep earthquakes were recorded beneath Piton de Crac, and on the edge of the deformation field which OVPF-IGPG claim is linked to magma injection that fed the February 10-16 eruption.
There was no significant inflation of the volcano preceding the Febraury 10-16 eruption. The inflation rate that was observed between late December 2019 and January 18, 2020 had slowed down.
Soil CO2 flux is reaching the highest values since the network became operational. The values are higher than the period following the October 25-27, 2019 eruption.
OVPF-IGPG summarize by noting that due to new increase of soil CO2 flux, discontinuous edifice inflation and seismicity, deep magma may be refilling and pressurization of the shallow magma reservoir. The pressurization of the shallow magma reservoir led to the February 10-16 eruption, which only partially drained the reservoir as edifice inflation continued directly after the eruption.
The current status of the volcano is termed “VIGILANCE” which is defined by OVPF-IGPG as “Possible eruption in medium term (a few days or weeks) or presence of risks on the sector (rockfalls, increase of gas emission, still hot lava flows…)” At this current time there is access to the Enclos Fouqué caldera and to the summit volcano with restrictions.
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Links / Sources:
Piton de la Fournaise volcano (La Réunion, France) activity update: detected thermal anomaly; the eruption stopped
Monday, Feb 17, 2020
OVPF reported that the eruption stopped on 16 February at 14:12 local time. No earthquake has been recorded since the eruption stopped. ... [more]
Monday, Feb 17, 2020
The first eruption of the volcano in 2020 lasted less than a week, from 10 - 16 Feb 2020. ... [more]
Piton de la Fournaise volcano (La Réunion, France): no more eruptive activity at surface seen this morning
Sunday, Feb 16, 2020
Aerial observations of the eruption site this morning could not find any surface activity any more, but a weak tremor signal persists that indicates the presence of magma close to the surface. ... [more]
Piton de la Fournaise volcano (La Réunion, France): volcanic tremor drops, uncertain whether eruption continues
Saturday, Feb 15, 2020
It is currently unclear whether the eruption still continues. The volcano observatory reported a sudden strong decrease in volcanic tremor was detected this afternoon at 14:00 local time, which probably means that magma supply drastically dropped or even ceased. ... [more]
Thursday, Feb 13, 2020
The eruption which started on February 10 at around 10:50 am local time continues. The intensity of the volcanic tremor (indicator of the intensity of the eruption) has been relatively stable over the past 24 hours. ... [more]