Activity Bulletin Tuesday, December 15, 2015 at 12:00 (Local Time)
Update on the situation:
On October 31, 2015 after a little more than 67 days of activity, the eruption that began on August 24, 2015 at 18:50 stopped in his effusive phase.
The OVPF has, over the following days, recorded numerous geophysical and geochemical events reflecting a continuation « non-effusive » in activity of the volcano
On 17 November 2015, the Prefecture of La Reunion said the official end of the eruption and the return to the vigilance phase.
The OVPF recorded 322 volcano tectonic earthquakes from the end of the effusive stage including 77 since the return to alertness.
Figure 1: Illustration of seismicity since 1 November 2015.
Figure 2: Illustration of the deformation. Are shown here two base lines (distance between two GPS) at the top (left) and the base of the summit cone (right).
Regarding the strain measurements, the OVPF recorded since the end of the effusive phase as a first step a relatively quick recovery in inflation and, since the end of November a stop inflation.
Regarding the gas flow, the OVPF also records since the end of November relatively low flows.
Conclusion: Since the beginning of December, the Volcano Observatory observed a return to calm of the Piton de la Fournaise. Given the eruptive history of the volcano, we do know that the situation can change at any time.
December 20, 2015. Piton de la Fournaise, La Réunion :
Source : OVPF
Photo : Fournaise info ( archives)