October 12 , 2016. EN. Turrialba , Nevado Del Huilà , Sheveluch , California Volcanoes .

Home / blog georges Vitton / October 12 , 2016. EN. Turrialba , Nevado Del Huilà , Sheveluch , California Volcanoes .

October 12 , 2016. EN. Turrialba , Nevado Del Huilà , Sheveluch , California Volcanoes .

October 12 , 2016.

 

Turrialba , Costa Rica :

Activity report of the Turrialba volcano
October 11, 2016, Updated 09:00

Around 9:00, on October 11, 2016, the Turrialba volcano showed a decrease of its activity of ash emanation .

Between 11:18 p.m. 9:48 p.m. an continuously increase in the amplitude of the signal of tremor representing the constant emanation of ash, gas and water vapor persisted. After this activity, there was a decrease in the amplitude of tremor. Around 04:45 until 06:00 the amplitude of tremor on the Turrialba volcano increased again, indicating  emissions of ash , gas and water vapor.

The wind direction come from the Northeast, as indicated by the reference weather station IMN.
There is no visibility of the Turrialba volcano from the top of the Irazu volcano.
Ash falls were reported in the region of Patarra, San Pedro de Montes de Oca, Guadalupe and Goicochea.
At the top and on the south of the Irazu volcano were reported heavy ash fall and a strong smell of sulfur.

Activity report of the Turrialba volcano
October 11, 2016, Updated 5:00 p.m.

From 5:00 p.m. on October 11, 2016, the volcano has decreased its Ash emanation activity and the seismic recording stations near the volcano show some almost imperceptible tremors that indicate that the activity has decreased in the period from 9 a.m. to 5 p.m. today.
In the morning, ash falls were reported in the area Patarra, San Pedro de Montes de Oca, Guadalupe. At the top and on the south of the Irazu volcano, were reported heavy ash fall and a strong smell of sulfur.

According to the IMN during the early hours of the morning the wind came from the northeast, and in the afternoon, the wind came from the South and Southwest.
There is no visibility of the volcano from the top of Irazu volcano.

 

Source : Ovsicori

 

Nevado Del Huila , Colombia :


Weekly Bulletin of volcanic activity of the volcano Nevado del Huila
The level of activity of the volcano continues at:
Activity level Yellow or (III): changes in the behavior of volcanic activity.

Analysis and evaluation of the information obtained by the  monitoring network of the Nevado del Huila volcano , during the week between 28 September and 4 October 2016. The Geological Survey of ColombiaObservatory Volcanogical and Seismological of Popayan reports:

During the period evaluated, 189 seismic events, of which 124 were related to the fracturing of rocks (type VT) and 65 related to the fluid dynamics in the volcanic conduits were recorded. Of these, 62 were classified as long-period events (type LP), three (3) as pulses of volcanic tremor of low energy (TR type).
On the images obtained by cameras from Tafxnú, Maravillas, Caloto, La Palma and Verdun, the degassing process of the volcanic system was observed. Fumaroles emissions were characterized as white.

nevado del huila

On September 29 an mobile flow measurement SO2 was conducted among the populations of Tunía (Cauca) and Candelaria (Valle del Cauca). The calculated flow rate was 497 tonnes / day, with a dispersion to the northwest side of Nevado del Huila volcano.
The sensors for monitoring ground deformation, magnetic fields and infrasonic signals associated with volcanic activity remained unchanged.
Therefore, it is concluded that during the volcano evaluation period, this one continued to show stable behavior.
The Geological Survey of Colombia continues to be vigilant and report timely to the changes that may occur.

Source : SGC

 

Sheveluch , Kamchatka :

56.64 N, 161.32 E;
Elevation 10768 ft (3283 m),
the dome elevation ~8200 ft (2500 m)
Aviation Color Code is ORANGE

Explosive-extrusive eruption of the volcano continues. Ash explosions up to 32,800 ft (10 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.

 

sheveluch

A growth of the lava dome continues (a viscous lava flow reveal in the northern its part), strong fumarole activity, ash explosions, hot avalanches and an incandescence of the dome blocks and hot avalanches accompany this process. Satellite data by KVERT showed a thermal anomaly over the lava dome all week. According to video and satellite data, explosions sent ash up to 4.5 km a.s.l. and ash plumes extended for about 95 km to the east and north-west from the volcano on 02-03 and 05-06 October.

 sheveluch

The plumes of resuspended ash blowing from the vicinity of Sheveluch area drifted for about 280 km to the east and south-east from the volcano on 03-04 October. An ash plume is extending about 54 km to the east from the volcano. .

Source : Kvert.

Photos: Y.Demyanchuk / KVERT

 

 California Volcanoes ,  United-States :

Current Volcano Alert Level: all NORMAL
Current Aviation Color Code: all GREEN

Activity Update: All volcanoes monitored by CalVO using telemetered, real-time sensor networks exhibit normal levels of background seismicity and deformation. Volcanoes monitored include Mount Shasta, Medicine Lake Volcano, Clear Lake Volcanic Field, Lassen Volcanic Center, Long Valley Volcanic Region, Coso Volcanic Field, Ubehebe Craters, and Salton Buttes.
Observations for September 1, 2016 (0000h PST) through September 30, 2016 (2359h PDT):
Mt Shasta: Two earthquakes at or above M1.0 were detected, with the largest registering M2.58.
Medicine Lake: No earthquakes at or above M1.0 were detected.
Lassen Volcanic Center: Seven earthquakes at or above M1.0 were detected, with the largest registering M2.07.
Clear Lake Volcanic Field: Two earthquakes at or above M1.0 were detected, with the largest registering M1.69. [Note: The typical high level of seismicity was observed under the Geysers steam field located at the western margin of CLVF. The largest event was M2.95].
Long Valley Volcanic Region: In Long Valley Caldera, 35 earthquakes of M1.0 or greater were detected, with the largest event registering M3.29. One earthquake at or above M1.0 was detected in the Mono Craters region (M1.53). No earthquakes at or above M1.0 were detected under Mammoth Mountain. [Note: The typical high level of seismicity was observed south of the caldera in the Sierra Nevada range. The largest event registered M3.07].

Afficher l'image d'origine

Ubehebe Craters:

Ubehebe Craters: No earthquakes at or above M1.0 were detected.
Salton Buttes: Thirteen earthquakes of M1.0 or greater were detected, with the largest registering M1.71. Additionally, a seismic swarm began on September 26 in the Brawley Seismic Zone near the southern terminus of the San Andreas Fault and about 12 km north of Salton Buttes. The largest earthquake registered M4.3. The swarm does not appear to be related to volcanic activity. Two previous swarms occurred in the area in 2009 and 2001.
Coso Volcanic Field: The typical high level of seismicity was observed, with 14 earthquakes M1.0 or greater. The largest registered M2.44.

The U.S. Geological Survey will continue to monitor these volcanoes closely and will issue additional updates and changes in alert level as warranted.

 

Source : CVO

Photos : toddshikingguide.com

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