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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

As indicated in the update yesterday at 12h local, the eruptive activity at the eruptive site of Piton de La Fournaise, located at 1050 m altitude, was low, with the height of lava projections less than 20 m . Sunday at 8 am, only one active flow was present and was discharging over a distance of less than 200m from the eruptive cone.

Piton de La Fournaise - the eruptive site 27.10.2019 / 8h - photo OVPF

Piton de La Fournaise - the eruptive site 27.10.2019 / 8h - photo OVPF

In its bulletin of 17h local, the observatory means the stop of the activity, or a pause:

" The eruptive activity started on October 25, 2019 at 2:40 pm local time stopped today, October 27, 2019 at 16:30 local time, after a phase of activity in" gas piston "of about 1 hour.

(But ...) no assumption is discounted as to the evolution of the situation to come (final shutdown, resumption of activity on the same site, resumption of activity further downstream), given the observables following:

- 29 superficial superficial volcano-tectonic earthquakes were recorded during the day yesterday,

- "Piston gases" are always registered,

- very little lava was emitted on the surface ".

Piton de La Fournaise - the small eruptive cone on 27.10.2019 - photo OVPF

Piton de La Fournaise - the small eruptive cone on 27.10.2019 - photo OVPF

Piton de la Fournaise - volcanologists in the field for sampling - photo 27.10.2019 OVPF

Piton de la Fournaise - volcanologists in the field for sampling - photo 27.10.2019 OVPF

At 19h in Reunion 1ère, Aline Peltier evokes a possibility of resumption of the eruption ... " It will be necessary that this magma comes out one day ".

Scientists therefore remain vigilant and do not exclude the hypothesis of a crack out of the enclosure or lower than that of the lava front of the latter eruption.

Since the end of this phase of activity, 2 superficial superficial volcano-tectonic earthquakes have been recorded. No earthquakes were recorded in the area of ​​the eruption. No deformation of the building is no longer perceptible.

Since the end of the eruption the SO2 values ​​have returned to normal (emissions low or close to the limit of detection) and the CO2 fluw remain low in the upper part of the Fournaise and go up in the distant sector.

The alert level currently in progress : Alert 2-2

 

Source: OVPF & Meeting 1ère

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/)

Kuchinoerabujima - webcams and ash advisory - 28.10.2019 / 0h03 - Doc.JMA

Kuchinoerabujima - webcams and ash advisory - 28.10.2019 / 0h03 - Doc.JMA

The JMA raised the alert level of the Kuchinoerabujima to 3 / do not approach the crater on October 28, 2019 at 00:15 local.
This adjustment of the alert follows a massive earthquake on October 27 at 21:33, with a hypocentre located near the crater Shindake.
A possible eruption, likely to cause pyroclastic flows, can impact area from the crater  to the coast.

Source: Japan Meteorological Agency

Kyushu - volcanoes on alert and location of Kuchinoerabujima- map JMA 28.10.2019 / 0h15

Kyushu - volcanoes on alert and location of Kuchinoerabujima- map JMA 28.10.2019 / 0h15

A slight activity still marks Barren Island (since Sept. 25, 2018) in the Andaman Archipelago.

Thermal anomalies are identified by Mirova on October 24 and 27, 2019, when cloud cover allows, and a hot spot is visible on the Sentinel-2 images of October 24th.

 

Sources: Mirova, Sentinel-2 and Global Volcanism Program

Barren Island - hot spot on 24.10.2019 on the image Sentinel-2 bands 12,11,4

Barren Island - hot spot on 24.10.2019 on the image Sentinel-2 bands 12,11,4

Barren island - thermal anomalies on 27.10.2019 / 7.15 am - Doc. Mirova MODIS_Latest10NTI

Barren island - thermal anomalies on 27.10.2019 / 7.15 am - Doc. Mirova MODIS_Latest10NTI

Barren Island - photo archives GVP / 23.02.2017- Courtesy of Jagdish Mukhi, Lt. Governor, Andaman and Nicobar Islands.

Barren Island - photo archives GVP / 23.02.2017- Courtesy of Jagdish Mukhi, Lt. Governor, Andaman and Nicobar Islands.

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