November 15 , 2015. EN. Tungurahua, Kilauea, Yasur .

Home / blog georges Vitton / November 15 , 2015. EN. Tungurahua, Kilauea, Yasur .

November 15 , 2015. EN. Tungurahua, Kilauea, Yasur .

November 15 , 2015.

 

Tungurahua, Ecuador :

The internal and surface activity of   the Tungurahua volcano increased since November 9, 2015. The activity was characterized by long periods of emission tremor, seismic stations of the volcano are sometimes saturated. In addition the eruption column reached up to 4 km altitude, falling ash affecting populations located to the west, northwest and southwest of the eruptive center. It was possible to observe a glow, at night and hear roar causing vibration of the windows in the areas surrounding the volcano. The deformation recorded by the inclinometer of Retu station (3900 m) indicates an accelerated deflation, may be related to the rise of magma  .

 

Informe Especial Tungurahua N. 15 - 2015

 

Seismicity:
From 20:00 (local time) on November 9, 2015, seismic activity of the volcano Tungurahua showed an increase compared to the level observed in recent weeks. Subsequently, on November 10 to 3:00 p.m. there was an increase of the amplitude of tremor episodes of emission, saturating the nearest station for an hour. Besides 5 small explosions between 11 and 12 November were recorded. Finally, since the early hours of November 13 ,the tremor emission remained  , saturating the station for more than 12 consecutive hours.

 

 

Emissions with low to moderate load of ash have been constant since Tuesday, November 10, 2015. The eruption column reached a height of 4 km and drifted north, west, northwest and southwest (Washington VAAC).
When the weather of afternoon and evening were favorable it was recorded the incandescent material emission , dropped to 500 meters below the crater and were observed from different points around the volcano.

The values of SO2 emitted by the volcano have also shown changes in recent days, reaching a record high of 2751 t / day at the Pillate station, Tuesday, November 10, while the average value of the measured gas emissions last week was 540 t / day.

Source : IGEPNPhotos : V. Valverde (IG-EPN).

 

 

Kilauea, Hawaï:

 
19°25’16 » N 155°17’13 » W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary:
Kilauea Volcano continues to erupt at its summit and from its East Rift Zone. Tiltmeters at the summit of Kilauea have recorded a deflationary tilt. The East Rift Zone lava flow is active northeast of Pu’u ‘O’o, and all breakouts remain within about 7 km (4 mi) of the vent. The flow does not currently pose a threat to communities. Low levels of seismic activity continue across the volcano. At the summit the lava lake is still active.

 

 

Summit Observations:
Tiltmeters at Kilauea’s summit have recorded deflationary tilt. The summit lava lake remains active, seismic tremor continues with episodic bursts associated with spattering within the Overlook vent. The depth to the surface of the lava within the overlook vent is approximately 64 m (210 ft) below the floor of Halema’uma’u at last check. Seismicity remains at low levels within the volcano. Summit sulfur dioxide emission rates averaged 2,900 metric tons/day for the past week.

Pu’u ‘O’o Observations:
Webcam views of Pu’u ‘O’o during the past day showed no changes in the persistent incandescent crater vents. Seismic activity remains low. The sulfur dioxide emission rate from all East Rift Zone vents was about 630 metric tons/day when measurements were last possible on October 28, 2015.

 

A hornito was active in the upper portion of the June 27th flow, with hissing and jetting sounds coming from a small opening at the top. The hornito here was about 2.5 m (8 feet) tall. A hornito is formed by gas and lava forced through a small opening in the roof of a lava tube. One side of the hornito has a small solidified flow of lava that oozed from the top, with the remainder consisting of spatter and Pele’s hair.

 

June 27th Lava Flow Observations:
Webcam views overnight show continued activity on the flow field. The June 27th lava flow is active, with surface flows scattered northeast and east of Pu’u ‘O’o. All active flows are within 2.2 and 6.4 km (1.4 and 4 mi) of Pu’u ‘O’o. There is no lava flow threat to nearby communities.

 

Source : HVO

Photo : Bruce Omori

 

 

 YasurTanna Island , Vanuatu:

 

19°32’0”S 169°26’30”E
Summit 1184ft (361m)
Current Vanuatu Volcano Alert Level: Level 2

The Alert Level for Tanna Volcano increases to Level 2.
This means that the Yasur activity has changed. Explosions become intense, volcanic bombs may fall in and/or around the crater and volcanic gas and ashes can also affect some villages. The area of risk remains around the volcanic crater and in areas expose to trade winds.

 

yasur

This is a reminder to all visitors to observe this volcano away from the crater rim to avoid volcano activity related impacts.
All communities, villages, visitors and travel agencies have to seriously consider this information.

The Department of Meteorology and Geohazards will continue to closely monitor this volcano activity. More information will be provided accordingly when necessary.

Source : Geohazard.
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