March 03, 2016. EN. Fuego , Tungurahua , Yellowstone, Karymsky.

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March 03, 2016. EN. Fuego , Tungurahua , Yellowstone, Karymsky.

March 03, 2016.


Fuego , Guatemala :


Guatemala, March 1, 2016, 20:00 (Local Time)
Evolution of the eruption of the Fuego volcano

Type: vulcanian.
Morphology : composite stratovolcano.
Geographical location: 14°28’54 « N Latitude; 90° 52″ 54 ‘W. Longitude
Height: 3,763m.

Currently, the fourth eruption of Fuego continues, it has been reported explosions accompanied by ash column from a height of 6,000 m (19.685 ft) to the westnorthwest, on a distance of about 40 kilometers of the volcanic complex.




It was confirmed ash falls in the communities of Morelia, Hagia Sophia, La Rochelle, PanimAche I and II, Sangre de Cristo, La Soledad and Yepocapa, which are likely to extend to the northwest of the volcanic complex as indicated on the ash scattering map.
The lava flow persists in the Las Lajas Canyon with a length of 700 meters, with the possibility of new lava flows generated in the direction of Santa Teresa canyons and Trinidad. This eruption may increase in the coming hours and ash fall occur over a greater distance. Possible descent of pyroclastic flow persists so it is necessary to take precautions.


Communicate from Insivumeh March 02, 19h30.

The fourth Fuego volcano eruption that began on 29 February , has ended after 48 hours.
There are still weak explosions generating ash columns with a height of 4500 meters above sea level and moving west northwest at a distance of approximately 10 kilometers. The rumblings or sensitive sounds have disappeared.
As a remnant of the activity still a lava flow about 3 kilometers long in the Barrana las Lajas, which is expected to decrease in the coming hours is observed.
As ash particles are still suspended, mainly in the north and northwest flank which is expected to dissipate in the coming hours.


Source : Insivumeh.

Photo : Adrian Rohnfelder, La fotografia de Paul.


Tungurahua , Ecuador :


SCENARIOS AND UPDATING of the eruptive activity of the Tungurahua volcano.

moderate surface activity with the presence of small pyroclastic flows.
March 1, 2016 (16h30TL)

Since the last special report issued on Saturday, February 27, the number of episodes of tremor emission increased as well as explosions and events related to the movement of fluids inside the volcano.



Informe Especial Tungurahua N. 4 - 2016

Figure 1. Recording of events of type VT, LP, Explosions and tremor emission since February until 1 March 2016.

Since its reactivation on Friday, February 26, it was reported glow at night at the crater, emissions of blocks , rumbling, ground and windows vibrations , detonations and small lava fountains.
The tremor registered by retu station (closest to the crater) still shows a high energy level as shown in Figure 2. However, the size of explosions recorded since February 27 (Figure 3) remained between low and moderate.

Informe Especial Tungurahua N. 4 - 2016

Figure 2. RSAM of seismic tremor recorded by the retu station. Establishes a relationship with the equivalent energy emitted by the volcano.

The tremor occurs in bands of varying intensity, and is associated with continuous emission with a low to moderate load of ashes. The column of the highest emission observed from Saturday until today reached 4000 meters above the crater. During these two, the vibration of windows and soil have been reported, in addition to rumblings , turbine type noises recorded by some populations of the western flank of the volcano.


During the last night there was an activity type lava fountain, where the emitted material, for the most part , stayed inside the crater. He was accompanied by rumblings of different intensities, emission of ballistic blocks that reached 1,500 meters above the summit. After a few hours, there was a small pyroclastic flow that descended in the ravines of Jewish, Mandur and Achupashal.

Then, an explosion that produced the descent of a new pyroclastic flow through the canyon Romero was recorded. These pyroclastic flows have remained in the upper middle part of the volcano’s flanks, in uninhabited areas. The largest flow descended into the canyon Achupashal and reached 1,500 meters below the summit.


Informe Especial Tungurahua N. 4 - 2016

Pyroclastic flow from the top of the cone.

The most populations affected by ash falls are Choglontús, Cotaló, El Manzano and Palitahua. Other communities were affected, with less ash and are: Bilbao Pillate and some rural municipalities in the canton of Quero.

Regarding emissions of sulfur dioxide, peak flow was 1,544 t / day recorded by Bayushig station on February 27 with 47 valid measurements. Figure 6 presents these data. For reference, the minimum value in recent weeks was 209 t / d recorded by Huayrapata station on 25 February with 8 valid measures.

Informe Especial Tungurahua N. 4 - 2016

Figure 6. sulfur dioxide flows recorded from 2015 on the Tungurahua volcano.

No significant changes in gas emissions, deformation, suggesting that the current activity is related to a magmatic intrusion of low volume, so the scenarios for the coming weeks, proposed on February 27, are maintained:


Scenario 1, most likely. The volcano’s activity continues with explosions, emissions and ash fall, which can sometimes be more intense. In addition, they can be small pyroclastic flows, limited to the middle of the flanks of the volcano, similar to those that took place yesterday. These events can occur in the next two to three weeks.
Scenario 2, less likely. A new magma migration to the surface occurs with a large volume and causing paroxysmal eruption similar to that of August 2006.
In cases where significant changes would occur in the monitoring parameters, the Geophysical Institute will update the scenarios that have been proposed.

Source : GP, BB, AA
Instituto Geofísico
Escuela Politécnica Nacional

Photos : E.P.N. Geophysics Institute / Wikipedia , José  Luis Espinosa Naranjo ( exceptionnel, comme d’habitude)


Yellowstone ,  United -States  :

44°25’48 » N 110°40’12 » W,
Summit Elevation 9203 ft (2805 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN


During February 2016, the University of Utah Seismograph Stations, responsible for the operation and analysis of the Yellowstone Seismic Network, reports 35 earthquakes were located in the Yellowstone National Park (YNP) region. The largest event was a micro-earthquake of magnitude 2.4 on February 09, 09:09 PM MST, located 4 miles southwest of West Yellowstone, MT.

February 2016 seismicity did not include any earthquake swarms. Yellowstone earthquake activity in February is at low background levels.

Ground deformation

GPS stations in Yellowstone continue to show little or no ground movement. (click on Static Plots / Time Series)

The Yellowstone Volcano Observatory (YVO) provides long-term monitoring of volcanic and earthquake activity in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.


Source : YVO.

Photo : Leon Jenson


Karymsky, Kamchatka .

54.05 N, 159.44 E;
Elevation 4874 ft (1486 m)
Aviation Color Code is ORANGE

Moderate eruptive activity of the volcano continues. Ash explosions up to 19,700 ft (6 km) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft.


A moderate explosive eruption of the volcano continues. Satellite data by KVERT showed a thermal anomaly over the volcano on 22 February; the volcano was quiet or obscured by clouds in the other days of week.

Source : Kvert.

Photo : E. Nenasheva


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