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Earth of fire

Actualité volcanique, Article de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié le par Bernard Duyck
Publié dans : #Actualités volcaniques
Fuego explosive activity on 02.10.2016 - photo INSIVUMEH / Edgar Barrios

Fuego explosive activity on 02.10.2016 - photo INSIVUMEH / Edgar Barrios

In the day of 10 February 2016, the Fuego was the seat of explosions, characterized by projections 400 meters above the crater and ash plumes rising to 4,800 meters asl, before dispersing to the N and NE on about 25 km. Pyroclastic flows went down the ravines El Jute and Las Lajas.

The intensity of the eruption has decreased from 18.30, with a few small explosions and a lower plume moving only over ten kilometers.

A lava flow extends over 3 km. in the barranca Las Lajas to the southeast, and another in the barranca Trinidad to the south.

Sources: INSIVUMEH & Conred

 

Fuego - small pyroclastic flow from 02.10.2016 - photo Gino Gonzlez-llama / Twitter

Fuego - small pyroclastic flow from 02.10.2016 - photo Gino Gonzlez-llama / Twitter

Seismic activity increased yesterday at Masaya volcano, perceptible by the population of the localities of Masaya, Nindirí, Ticuantepe and Managua. The largest earthquake of magnitude 4.1 occurred at 13h.

According RSNN, the majority of earthquakes involve local faults, whose movements are related to the activity of the volcano. The CODE / Centro de Operaciones de Desatres suspended classes for a day in three municipalities near the volcano. The National park remains closed

The lava lake is brewed by large movements of lava, and you can see on the videos, two points of incandescence of different surface in the crater.

 

Video Otto Arrechavala - 02/10/2016

Video Julian Elias Calero Villarreyna - 02/10/2016

Piton de la Fournaise,  recovery of activity.

Since late January an acceleration of inflation is noted, which reached up to 1 cm of dilation in the summit area in 15 days. The pressure source is located at the moment, according to OVPF, at 1,500-2,000 meters below the crater Dolomieu.

The flow of volcanic gases is synchronous with an increase in the flow of carbon dioxide from the ground on remote places, and sulfur emissions - SO2 and H2S - and CO2 emissions at the summit.

Seismicity has remained at a fairly high level until mid-November 2015 with 11 summital earthquakes (~ 0.5km - 1.5km above sea level) and 4.5 deep earthquakes (~ 2km under the sea level ) on average per day  ... then it stabilized at 2 summital earthquakes a day when no deep earthquake was detected.

Source: OVPF report - 02/10/2016 -
link

Assessment of seismicity at Piton de la Fournaise since the end of the eruption of August 24 to October 31, 2015 - Doc. OVPF - IPGP

Assessment of seismicity at Piton de la Fournaise since the end of the eruption of August 24 to October 31, 2015 - Doc. OVPF - IPGP

This morning, the Dolomieu crater shows no signs of eruption - Camera Bory 02.11.2016 6:45 - OVPF

This morning, the Dolomieu crater shows no signs of eruption - Camera Bory 02.11.2016 6:45 - OVPF

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