March 25, 2016. EN. Tungurahua , Fuego , Suwanose-Jima , Cerro Machin .

Home / blog georges Vitton / March 25, 2016. EN. Tungurahua , Fuego , Suwanose-Jima , Cerro Machin .

March 25, 2016. EN. Tungurahua , Fuego , Suwanose-Jima , Cerro Machin .

March 25, 2016.


Tungurahua , Ecuador :

The Ecuadorian authorities change the alert level of the volcano Tungurahua.

24 March 2016. The alert level of the volcano Tungurahua has changed from orange to yellow after a decline in its eruptive activity, according to the National Secretariat for Risk Management (SNGR).
The decision comes after the analysis of the activity and volcano monitoring showing a moderate level of eruptive activity since February 29 and according to the latest bulletins of 22 and 23 March.


With this change in alert level, governors and mayors of the area of influence of the volcano in the province of Tungurahua will update the contingency plans and scenarios available depending on the change in alert level.
Tungurahua rises to 5,020 meters above sea level in the province of the same name. The volcano, whose name means « throat of fire« , is one of eight active volcanoes in Ecuador.

The volcanic activity of the Tungurahua was reactivated in 1999 and eruptive process has continued until today. this activity has had several violent episodes, especially in 2006, which caused considerable material damage because of ash that have damaged crops and killed animals.


tungurahuaThe latest bulletin of activity from IGEPN.

Thursday, March 24, 2016
The volcanic activity is low.
The weather conditions do not allow direct observation of the crater.
From 11:00 (TL) yesterday until 11:00 (TL) today, 1 events long period (LP) and 1 event volcano – tectonic (VT) have been recorded.
Observations emissions and ashes:
The volcano remained completely cloudy, there is no observation at the surface.

Rain and lahars:
There was no rain or lahars.
If the rains become more intense in the volcano area, they can re-mobilize deposits from pyroclastic flows and lahars generate. For this reason, we recommend extreme caution when driving on roads and highways that cross the gorge through which these flows are down and the regions which in the past have been affected by this kind of phenomenon

Sources :  ANDES , Igepn .

Photos :  Maxiscience / Patrick Taschler , José Luis Espinosa Naranjo.



 Fuego , Guatemala :

Special Bulletin of volcanic activity.
Guatemala, March 21, 2016, 10: 30 hours (local time)

Increased volcanic activity of the Fuego volcano.

Type: vulcanian
Morphology : composite Stratovolcano
Location Geographical: 14 ° 28 ‘54 « North Latitude, 90 ° 52′ 54 » West longitude.
Altitude: 3,763m.
The Fuego volcano has shown a change in its eruptive model, generating low to moderate explosions accompanied by ash plume up to an altitude of 4300-4700 meters. They moved over a distance of 12 kilometers to the west. Moderate rumblings are generated and ash falls in the villages of Aldea, Sangre de Cristo, Panimaché I and II. are reported.
This activity is also recorded by the station FG3, with an increase of the amplitude of tremor (internal vibration) associated with degassing and its duration.



Due to the increased activity, it is possible that in the hours or coming days can be generated lava flows and may be the beginning of a new eruptive phase so it is necessary to take precautions .
For this, the INSIVUMEH recommends:

At CONRED: Being aware of the activity development of Fuego volcano.
At the Directorate General of Civil Aviation: Take precautions for air traffic zones in the Fuego volcano area because the ash particles in suspension move in the direction of the wind.


Source : Insivumeh.

Photo : David Rojas


Suwanose-jima , Japan :

JMA reported an explosion at the level of the crater Mitake on the volcano Suwanosejima , on 23 March 2015 at 5h.13, accompanied by a colored ash plume rising 1,600 meters above the crater.

The 8-km-long, spindle-shaped island of Suwanosejima in the northern Ryukyu Islands consists of an andesitic stratovolcano with two historically active summit craters. The summit of the volcano is truncated by a large breached crater extending to the sea on the east flank that was formed by edifice collapse.



Suwanosejima, one of Japan’s most frequently active volcanoes, was in a state of intermittent strombolian activity from Otake, the NE summit crater, that began in 1949 and lasted until 1996, after which periods of inactivity lengthened. The largest historical eruption took place in 1813-14, when thick scoria deposits blanketed residential areas, and the SW crater produced two lava flows that reached the western coast. At the end of the eruption the summit of Otake collapsed forming a large debris avalanche and creating the horseshoe-shaped Sakuchi caldera, which extends to the eastern coast. The island remained uninhabited for about 70 years after the 1813-1814 eruption. Lava flows reached the eastern coast of the island in 1884. Only about 50 people live on the island.

Source : JMA , B Duick , GVP.

Photo : photo H. Seo / Geological Survey of Japan


Cerro Machin , Colombia :

Weekly Bulletin activity of the volcano Cerro Machin, from 15 to 21 March 2016

The level of activity continues at:
Activity level Yellow or (III): changes in the behavior of volcanic activity.

Regarding the monitoring of the volcano Cerro Machin, the SERVICIO Geologico COLOMBIANO reports:

During the last week, the Cerro Machin volcano presented a low energy seismic activity related to rock fracturing in the volcanic structure. These seismic events were located under the main dome of the Southwest sector at depths between 2.08 and 3.27 km. The earthquake of greater magnitude of the week was registered on March 18 at 11:25 p.m., with a magnitude of 0.3 ML (local scale), located southwest of the main dome at a depth of 2.97 km. The other monitored parameters of the volcano showed no significant change.


cerro machin

The SERVICIO Geologico COLOMBIANO follows closely the evolution of the volcanic phenomenon and will continue to report timely to the changes that may occur.

Source : SGC

Photo : Nestor Ivan.

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