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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
 Piton de La Fournaise - nice activity 09.03.2019 at the end of the day - photo of our friends from  Tunnels de lave Réunion: Rando-Volcan

Piton de La Fournaise - nice activity 09.03.2019 at the end of the day - photo of our friends from  Tunnels de lave Réunion: Rando-Volcan

At Piton de La Fournaise, the situation varied greatly during March 9th and the following night.

The volcanologist Ludovic Leduc / Objectif Volcans made a point yesterday at 15h, and described three areas of activity : the main cone downstream of the Madore, the upstream vent (which filled well the crater) and in the background, the new fissure.

By activity zone:
• The small vent of 05/03 upstream of Madoré: still active but the flows are exhausted.
• The main cone active since 19/02: activity increased sharply, with lava fountains that reached 80-100 m high this morning, which is not common on this volcano.
• The fissure opened on 07/02 around midnight: more activity at this level.
• The fissure opened on 07/02 around 11:10: nice activity that starts to build a cone.

Piton de La Fournaise - 09.03.2019 / 15h00 TU - Webcam Cascades / OVPF

Piton de La Fournaise - 09.03.2019 / 15h00 TU - Webcam Cascades / OVPF

Piton de La Fournaise - the activity is visible on the 4 webcams of the OVPF between 15:45 and 15:49 UTC - one click to enlargePiton de La Fournaise - the activity is visible on the 4 webcams of the OVPF between 15:45 and 15:49 UTC - one click to enlarge
Piton de La Fournaise - the activity is visible on the 4 webcams of the OVPF between 15:45 and 15:49 UTC - one click to enlargePiton de La Fournaise - the activity is visible on the 4 webcams of the OVPF between 15:45 and 15:49 UTC - one click to enlarge

Piton de La Fournaise - the activity is visible on the 4 webcams of the OVPF between 15:45 and 15:49 UTC - one click to enlarge

Around 7 pm, in a telephone interview with Linfo, re, Aline Peltier reports that the lava front is frozen.

Observers present on the lava road report projections at the level of the eruptive cone reaching 80 to 100 meters in height, and a shower of Pelé's hair on the Grand Brûlé... " it stings everywhere ! "

Piton de La Fournaise - 09.03.2019 / 19h39 TU - Webcam Cascades / OVPF

Piton de La Fournaise - 09.03.2019 / 19h39 TU - Webcam Cascades / OVPF

According to the OVPF in its bulletin of March 10 at 7 am local, after a phase of very strong surface activity observed in the night of March 9 to 10 (lava fountains of the order of 50-100m high and many arms of flows), surface eruptive activity at Piton de la Fournaise stopped around 6:28 am local time. Following the cessation of surface lava emissions, seismicity has slowed down considerably.


A residual eruptive tremor is always recorded, so no hypothesis is ruled out regarding the evolution of the future situation: definitive cessation, resumption of activity on the same site, or resumption of activity on another site.

Piton de la Fournaise - Evolution of the RSAM (indicator of the volcanic tremor and the intensity of the eruption) over the last 24 hours on the seismic station of FLR. (© OVPF / IPGP)

Piton de la Fournaise - Evolution of the RSAM (indicator of the volcanic tremor and the intensity of the eruption) over the last 24 hours on the seismic station of FLR. (© OVPF / IPGP)

Piton de La Fournaise - Radiative power at 10.03.20109 / 5:55 - with a peak of activity followed by a considerable decline - Doc. MirovaMODIS_VRP

Piton de La Fournaise - Radiative power at 10.03.20109 / 5:55 - with a peak of activity followed by a considerable decline - Doc. MirovaMODIS_VRP

La Fournaise is at its head ! Final show or search for a second wind?

To be continued...

Sources: Objective Volcanoes, Linfo, re, Mirova and 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/)

Popocatépetl - explosion of the 08.03.2019 / 15h41 - photo WebcamsdeMexico / Cenapred

Popocatépetl - explosion of the 08.03.2019 / 15h41 - photo WebcamsdeMexico / Cenapred

In the last 24 hours, Popocatepetl has presented 95 exhalations, accompanied by emissions of water vapor and gas, as well as small amounts of ash.

Two explosions were recorded: the first on March 8 at 3:24 pm, which initially reached a height of 1,500 m above the crater. Subsequently, when the winds moved to the southwest, and emissions reached about 3,000 m. A slight ash drop has been reported in communities in this area, such as Tochimilco, San Francisco Huilango and Huaquechula.

Popocatépetl - explosion of 09.03.2019 / 23:17 - WebcamsdeMexico / Cenapred

Popocatépetl - explosion of 09.03.2019 / 23:17 - WebcamsdeMexico / Cenapred

In addition, a volcanoteconic earthquake was recorded yesterday at 23:13, with a preliminary magnitude of 1.8, 29 minutes of low amplitude tremor and 102 minutes with low amplitude exhalations, between 4:25 and 6:70 on March 9th., a period during which we observed the release of some incandescent fragments

At 11:16 on March 9, a moderate intensity explosion occurred, projecting incandescent fragments on the cone of the volcano reaching distances of up to 1,200 m. The generated ash column had an initial height of 1,500 meters above the crater, then moving north-east, and generating possible ash falls in the communities of this area. After this event, the general activity of the volcano has returned to its previous levels.

The volcanic alert remains at Amarillo fase 2.

Source: Cenapred

Peteroa - 09.03.2019 / 16h40 - 2nd day ashes go to Chile - Doc. CNEA Segemar

Peteroa - 09.03.2019 / 16h40 - 2nd day ashes go to Chile - Doc. CNEA Segemar

In Chile, degassing with ashes continues in Peteroa ... the only difference, for two days, the plume is diverted towards Chile following a change in wind direction.

The alert level remains in Amarillo.

Source: Sernageomin

Sheveluch - volcanic ash advisory for 09 and 10.03.2019 - Doc. VAAC Tokyo - one click to enlargeSheveluch - volcanic ash advisory for 09 and 10.03.2019 - Doc. VAAC Tokyo - one click to enlarge

Sheveluch - volcanic ash advisory for 09 and 10.03.2019 - Doc. VAAC Tokyo - one click to enlarge

In Kamchatka, the eruptive activity of Sheveluch continues, however downing since the 9 in the morning, where the red code had been introduced for aviation (see article yesterday)

At about 1 pm, the KVERT lowered the aviation code to orange, and reported an ash plume at 8,000 meters asl, drifting north for 375 km.

At around 21:20, the height of the plume had decreased to 4,000-4,500 meters, drifting to the northeast.

The activity found again the living environment of a growing lava dome, with incandescence and block avalanches, fumarolic activity, and gas plume.

 

Source: KVERT

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