Piton de la Fournaise, La Réunion : presence of lava were observed in the cone formed in the early phases of the eruption.

Piton de la Fournaise, La Réunion : presence of lava were observed in the cone formed in the early phases of the eruption.

Beginning of a new phase effusive which began during night.

From 4:00 p.m., October 29, , the tremor recorded by the instruments of the Observatory has gradually intensified. It is first again become permanent, then gradually increased. A new phase effusive has started shortly after 20:00. In early night glows reflecting the presence of lava were observed in the cone formed in the early phases of the eruption. Shortly after 4:00, the activity has been further intensified to become comparable to that of last Saturday (morning).

The recorded signals show that the activity is concentrated again at the crater that formed early in the eruption, near the Rivals crater in the southwestern part of the Enclos Fouqué. The activity is currently (October 30th 6:50) observable from the path leading to the Piton of Bert.

Since October 29 4:00 p.m. we have a clear increase in the background noise (which we interpret as a residual tremor).
From 4H in the morning approximately , the tremor is again became continuous and relatively strong.

Just like the previous episode, the recovery is done without magmatic intrusion. The conduit is most likely remained open between the two events with a gas stream which has maintained the background noise. The increase in gas flow and pressure have resulted again the arrival of the magma to the surface. At present we have not observed flow of lava flows but only the presence of projection.

October 30, 2015. Piton de la Fournaise, La Réunion :

Source : OVPF

Photos : Chrisi photographie ( archive)

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