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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
 Eruption site at Piton de La Fournaise: the cone and the beginning of the lava flow - photo 10.02.2017 / 8h50, local time.- OVPF

 Eruption site at Piton de La Fournaise: the cone and the beginning of the lava flow - photo 10.02.2017 / 8h50, local time.- OVPF

The eruption continues at Piton de La Fournaise.
The volcanic tremor (indicator of surface eruptive intensity) remains at a high level of intensity.
No seismicity was recorded during the day under the summit of Piton de la Fournaise.
The inflation of the building continues, reflecting the pressurization of the surface reservoir and the maintenance of a rise of fluids.
SO2 fluxes are relatively low.

Evolution of the RSAM (volcanic tremor and eruption intensity indicator) between January 31st and February 10th (5pm local time) on the seismic station of Château Fort, located on the southern flank of the volcano. (© OVPF / IPGP)

Evolution of the RSAM (volcanic tremor and eruption intensity indicator) between January 31st and February 10th (5pm local time) on the seismic station of Château Fort, located on the southern flank of the volcano. (© OVPF / IPGP)

A well designed cone of 30-35 m. high and 190 m. wide, has been erected, capped by a single active mouth, from which escape projections contribute to its growth. He was unofficially named Piton Carlos by the local media.

The level of the lava is approximately half the height of the cone (February 10, 8:50 am) and the thickness of the lava accumulation at the outlet of the vent is about 14 m.

Piton de La Fournaise: high thermal anomaly 10.02.2017 / 6.30 am - doc.Mirova MODIS_logVRP

Piton de La Fournaise: high thermal anomaly 10.02.2017 / 6.30 am - doc.Mirova MODIS_logVRP

Most of the activity is done by lava tube, and surface flows are therefore low (estimates between <1 and 2.4 m3 / s according to the satellite data of the HOTVOLC platforms (OPGC - Clermont Ferrand) and MIROVA (University of Turin).
Only a few small arms are visible at the exit of some tubes. These observations are consistent with the low flux of SO2.
Outlet temperatures at the vent are between 1200 and 1250 ° C. Larger shots identified the main channels and highlighted tubes areas.

 Piton de La Fournaise: Thermal image of the eruptive site taken in aerial view on 10.02.2017 / 8.45 am local time - doc. OVPF

 Piton de La Fournaise: Thermal image of the eruptive site taken in aerial view on 10.02.2017 / 8.45 am local time - doc. OVPF

The photos taken today made possible to more accurately map the extent of lava flows.

The flow front at the top of the "Grandes Pentes" is frozen and no longer progresses.


Source: OVPF

Piton de La Fournaise - Approximate tracing of lava flows on 10/02/2017, 8h50 local time, deduced from aerial images (IGN background map). (© OVPF / IPGP)

Piton de La Fournaise - Approximate tracing of lava flows on 10/02/2017, 8h50 local time, deduced from aerial images (IGN background map). (© OVPF / IPGP)

Piton de La Fournaise - the lava flow front on 10/02/2017 at 7:30, local time. (© OVPF / IPGP)

Piton de La Fournaise - the lava flow front on 10/02/2017 at 7:30, local time. (© OVPF / IPGP)

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Angelilie 11/02/2017 15:24

beau blog. un plaisir de venir flâner sur vos pages. une découverte et un enchantement. au plaisir

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