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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 and Santiaguito, by a  foggy weather due to heavy rainfall, which may cause lahars - Photo INSIVUMEH
Fuego and Santiaguito, by a  foggy weather due to heavy rainfall, which may cause lahars - Photo INSIVUMEH

Fuego and Santiaguito, by a foggy weather due to heavy rainfall, which may cause lahars - Photo INSIVUMEH

In Guatemala, the constant activity of Fuego and Santiaguito volcanoes in recent months have allowed the accumulation of ash and other volcanic materials in the ravines and surrounding areas.

Heavy rains leave these areas fear the possibility of formation of lahars more or less strong, and can be "hot".

Sources: INSIVUMEH & Conred

Turrialba - 04.27.2016 / 7:06 - webcam Ovsicori

Turrialba - 04.27.2016 / 7:06 - webcam Ovsicori

Turrialba - volcano summit reconstitution with 193 photos taken by the drone of the Ovsicori 31/03/2016

Turrialba - volcano summit reconstitution with 193 photos taken by the drone of the Ovsicori 31/03/2016

Overview of the Turrialba, carried out by a drone on 03/31/2016 / Ovsicori by Cyrill Muller and Ana Lucia Garita.

In Costa Rica, Ovsicori signals a seismic swarm 24 and 25 March in a region classified as weak by seismologists, located between the Turrialba and Irazu volcanoes. These earthquakes are caused by the internal activity of Turrialba, especially the movement of materials in a context of local faults.

The Turrialba continues to emit gases and steam, deserving his Spanish nickname "White Tower".

Source: Ovsicori & Teletica

Seismic swarm of 23 and 24 April 2016 between the Turrialba and Irazu - Doc. Ovsicori

Seismic swarm of 23 and 24 April 2016 between the Turrialba and Irazu - Doc. Ovsicori

In New Zealand, a routine check carried out on White Island / Whakaari by scientists from GNS, with the volcanologist Brad Scott, showed the level of  the crater lake decline of 2 meters, bringing it in 2014 level. This decrease has revealed several islands and / or contours of craters;

On the other hand, the temperature of the lake rose 2 ° C since the month of February, with 56-58 ° C., while the temperature of the hottest fumarole fell from 169 to 161 ° C.

SO2 emissions remain in the standards for White Island, and the level of tremor varies, but remains lower than in 2012, where small eruptions occurred. The alert level remains at 1 / minor volcanic instability.

Update by Dino of White Island

Volcanic Alert Bulletin WI 2016/02: 11:33am Thursday 28 April 2016; White Island Volcano
Alert Status: Volcanic Alert Level raised to 3
Aviation Colour Code changed to Orange

An eruption occurred at White Island (Whaakari) sometime between 9:30 – 11:00 pm yesterday (Wednesday, 27 April 2016).
As a consequence of this activity the Volcanic Alert Level is now raised to Level 3 (Minor Volcanic Eruption) and the Aviation Colour Code to Orange.

No eruptive activity has been seen since about 11:00 pm yesterday. The eruption that occurred Wednesday 27 April was accompanied by a moderately elevated seismic activity. The seismic activity is now back to normal.
The eruption appears to have deposited material over north side of the crater floor and up onto north crater wall. There is not yet a clear view of crater area visible from cameras. GNS Science volcanologists are monitoring the volcano and further information will be released as soon as it is available.


 

White Island 2016.04.28 8h40 - ashfall in the red box - doc. Dino of White Island

White Island 2016.04.28 8h40 - ashfall in the red box - doc. Dino of White Island

White Island / NZ - photo GeoNet

White Island / NZ - photo GeoNet

A film of the activity of Nyiragongo had done 19 April 23 by Francesco Pandolfo, Erba Gabriele, Giovanni Griuffrida Dario Tedesco and Sebastien Valade / with the assistance of G.V.O, MONUSCO and the Virunga N.P.

A film of the activity of Nyiragongo had done 19 April 23 by Francesco Pandolfo, Erba Gabriele, Giovanni Griuffrida Dario Tedesco and Sebastien Valade / with the assistance of G.V.O, MONUSCO and the Virunga N.P.

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