November 08, 2015. EN. Rincón de la Vieja , Lokon-Empung, Popocatepetl.

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November 08, 2015. EN. Rincón de la Vieja , Lokon-Empung, Popocatepetl.

November 08, 2015.



 Rincón de la Vieja , Costa Rica :



The accumulation of material on the north wall, where the river begins Pénjamo, with the consequent possibility of a flow of sediment along the bed of the river, is the main risk identified in the Rincon de la Vieja volcano. So detailed volcanologists Research Center in Geological Sciences at the University of Costa Rica (UCR), in a report submitted to the National Emergency Commission (CNE).

Specialists detailed in the document that the lake’s temperature rose to 17 ° C (increased from 28 ° C to 45 ° C), the water level of the lake dropped by two meters (both changes occurred during the last month) and solid material was located 100 meters away from the crater. These findings were made by Gino Gonzalez Segura Ilama and Yemerith Alpizar, the report also delivered to the Guanacaste Conservation Area, which is responsible for overseeing the National Park Rincon de la Vieja.This volcano is located between the cantons of Liberia, Bagaces and Upala. The Pénjamo river, by which in the past have fallen lahars (sediment flows), passing through Buenos Aires, Aguas Claras Armenia and Upala, where they can live about 4,000 people.

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Eruptions. Gino Gonzalez, one of volcanologists who made the inspection, said that during the stay of two hours in the crater, observed 10 phreatic eruptions, reaching between 10 and 20 meters high. The specialist added that no such eruptions of magma supply, because what was observed gas, mud, stones and hot water. »We found sulfur blocks. It means that under the lake are forming sulfur seals, being transferred by hot fluids, increase the pressure and burst, generating eruptions, which eject these blocks. We found about 100 meters from the crater. That means that the eruptions were up to 300 meters, « he said.Mora Raul Amador, the National Seismological Network (RSN), said that the Rincon de la Vieja shows fluctuations in activity since September 2011. « It seems that is at a peak high activity, » he said.

Source :


 Lokon-Empung, Nord Sulawesi, Indonésie :



Based on visual observations, the activity of G. Lokon was observed with white smoke emissions, thin, thick, with a height of around 25-125 m.
Seismicity of Lokon is dominated by tremors, low continuous deep volcanic earthquakes (VB) and emission earthquake. In the period from 28 October to 5 November 2015, the seismicity tends to fluctuate, and there emerges a tendency to an increase in emission tremor, these earthquakes are a vibration near the surface, so that when there an increase of seismicity in the shallow areas, it is generally transmitted directly as an eruption. The difference in amplitude of tremor shows a relatively unchanged amount. The SSAM data has tended to fluctuate during the period from 28 to 5 October 2015, but the data have shown a tendency to increase gradually.



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Eruptive potential is still there, but it is not known when or how intense the eruption will occur.
The danger of the eruption of Mount Lokon is currently in the form of volcanic ash that spread depending on the wind direction and speed.
Based on visual observations, seismicity, and measures SSAM and potential threat of an eruption of Mount Lokon, dated on November 5, 2015 at 18:00, the level of volcanic activity of G.Lokon is LEVEL III (ALERT / Siaga).


Source : VSI

Photo : P. Crochet



Popocatepetl, Mexique :


November 7, 11:00 h (November 7, 17:00 GMT)

In the last 24 hours the seismic records of the monitoring system at Popocatepetl volcano registered 72 low-intensity exhalations. Besides, were registered 5 low-to-moderate intensity explosions, yesterday at 20:30, today at 03:22 h , 03:40 h, 04:02 h and 04:09 h. Adittionally were recorded 23 minutes of tremor.
Overnight was observed incandescence above to the volcano, which increased with some exhalations .



At the time of this report, it was no possible to observed the volcano but, very early was observed a light emission to the northeast side .
CENAPRED emphasizes that people SHOULD NOT go near the volcano, especially near the crater, due to the hazard caused by ballistic fragments .
This type of activity is included within the scenarios Volcanic Traffic Light Yellow Phase 2.


Source : Cenapred

Photo : Karel Del Angel.

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