October 14, 2015. EN. Ubinas , Rincón de la Vieja , Etna .

Home / blog georges Vitton / October 14, 2015. EN. Ubinas , Rincón de la Vieja , Etna .

October 14, 2015. EN. Ubinas , Rincón de la Vieja , Etna .

October 14, 2015.


Ubinas , Perou :


Earthquakes of LP Type associated with fluid movements were again recorded an increased activity in the analysis of this week. We observed a 520 LP peak during the day of 11 October and a daily rate of 244 LP / day. Energy values increased slightly over the 10 and 11 October . Low levels however, are still noted.
Regarding the hybrid seismic activity related to the rise of magma, until October 11 it showed a downward trend. On October 12, this type of seismicity recorded a peak of 28 hybrids. The energy levels of hybrid events are low.

The type of VT seismicity (earthquakes type rock fracturing), showed the same behavior as that presented by hybrid earthquakes. The activity of the 12 October showing a peak of 171 VT , indicating a further increase in internal pressure.
The tremor activity has declined significantly in the last 11 days. Being related to the emission of ash, during this period, there were no such problems.
During this period, there were no explosions / expirations.



Last week, the fumaroles of the volcano Ubinas decreased. On the basis of images obtained by our camera Campbell Scientific, only can be distinguished bluish sporadically gases and water vapor emissions.
This gaseous material amounted to 1100 meters, characterized by its low density, the period of greater emission was recorded between 11 and 12 October. It should be noted that no emissions of ash was observed between 06 and 12 October.



 Finally, the system Mirova detected four thermal anomalies for the period. The first detected on October 7, with a value of 1.5 MW; the second took place on 9 October , value 1.8 MW; the third took place on October 11 with 3.4 megawatts and the fourth detected anomaly corresponds to a value of 1.7 MW recorded on October 13. This series of consecutive increases indicate the presence of a warm body near the surface.

 Source : IGP Perou.

Photo : Fredy Apaza , IGP.


Rincón de la Vieja, Costa Rica :


San José, October 13 (El Pais.cr) The volcano Rincón de la Vieja presented a new increase in its eruptive activity, which began in late September and in early October.
Specialists of National Seismological Network  (RSN: UCR-ICE) recorded seismic signals associated with eruptions, and there are reports of local residents who claim to have heard rumblings and have seen degassing.
 Between 26 and 29 September , 86 hours of continuous tremor, a seismic signal related to fluid flow and vibration in the walls of the cavities as they are traveling, have been detected.

In addition, there have been sporadic earthquakes of volcano-tectonic origin, which are linked to a brittle fracture of the environmental rocks and an increase in temperature in the upper part north of the volcano.


Rincón de la Vieja

The Costa Rican Institute of electricity (ICE), said that at least two eruptive episodes took place: the first took place on October 1 on which there are neighborly rapports who heard noises at a distance of 4.5 kilometers from the active crater. The second, which took place on October 4 at 6:27, on which sludge deposits which were generated by the event, were found.
Similarly, on October 9, at 15:40, an intense degassing was reported in the active crater of Rincon de la Vieja, which coincides with a seismic signal.
For these cases, as well as two other events that are not confirmed by evidence on the ground, which took place on October 2 at 1:53 and 2:16, there are associated seismic signals. In addition, minor eruptions on 18 May, 18 June and 21 August 2015 were recorded.

Source : http://www.elpais.cr/

Photo: Ovsicori .


Etna, Sicile :

A small emission of ash from Voragine, Mount Etna, on the morning of October 13, 2015, has been seen from Calatabiano, northeast of the volcano.
The amplitude of tremor shows no change this morning.



So far, the INGV has not made any update.


Source : B Behncke

Photo : Antonio Di Caudo

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