December 03 , 2016. EN. Ubinas , Kerinci , Katmai , Nevado Del Huila .

Home / Alaska / December 03 , 2016. EN. Ubinas , Kerinci , Katmai , Nevado Del Huila .

December 03 , 2016. EN. Ubinas , Kerinci , Katmai , Nevado Del Huila .

December 03 , 2016.

 

Ubinas , Peru :

Date: 1st December 2016: Update of the main activity observed between 15 and 30 November

The Ubinas is the most active volcano in Peru. The current eruptive process, which began in September 2013 and is continuing today, has reached a volcanic explosive index (IEV) of 2 on a scale of 0 to 8.
Currently, the Ubinas volcano has shown an increase in its seismic activity and characteristic fumarollians. These are tracked and reported to the OVS through the telemetry network stations that send real-time information to the Cayma headquarters.

 

 ubinas

Sismovolcanic vigilance:

The type of hybrid events, associated with the rise of magma, continues to increase. For this period, an average of 47 HIB / day was recorded, similar to the previous report. In the last week, the seismic energy of the hybrid events showed significant peaks of 14 MJ (25 November) and 22 MJ (29 November). This would indicate a greater volume of magma that rise, in relation to what was recorded in the period from 03 to 14 November.

The seismicity of the VT type, linked to the rupture of rocks and the increase of the internal pressure, even if it continues with moderate values, showed a slight decrease in the number of events compared to the previous period, to reach a rate of 201 VT / day (Reporting no. 33: 324 VT / day). The energy values of the VT events remain low.

Tremor seismicity has shown an increase in its values, both in duration and in energy that it generates. Between 18 and 29 November, there were 30 hours of Tremor. Most of these earthquakes that occurred were of short duration and of low energy. These seismic events are probably related to the emission of ash and volcanic gases and, if not, to the disturbance at depth of the hydrothermal system following the rise of a hot body

 

ubinas

On November 17 was recorded at 18:29 local time (HL) an explosion and minor emissions of ash and gas (mainly SO2). This event generated 2.3 MJ of energy. Since then, new explosions have been expected.

Satellite Surveillance:
Thermal monitoring and SO2 anomalies: The Mirova system (www.mirovaweb.it) has not detected any thermal anomalies for this period. In addition, the satellite system « EOS Aura » GSDM-NASA (http://so2.gsfc.nasa.gov/) did not detect major anomalies during this period.

Visual Surveillance:
Between 15 and 30 November, there were sporadic emissions of light ash pulses, which reached a maximum of 1000 meters above the edge of the crater. In addition, a small explosion on 17 November at 18:29 hours was recorded, with ashes expelled up to 500 meters high.
At this stage of the analysis, bluish (magmatic gas) and whitish (water vapor) gases have also been detected. In general, it was not appreciated a significant variation in the visual behavior of the volcano compared to the first half of November.

Source : IGP

Photos : Ingemmet , Andina .

 

Kerinci , Indonesia :

Mount Kerinci closed to public

2 DECEMBER 2016. As the activity of Mount Kerinci in Jambi has increased over the past week, hundreds of people have been forced to cancel plans to spend New Year’s Eve on the country’s highest volcano.

“Many have canceled their trips to Mt. Kerinci because of the latest activity of the volcano,” Goes to Kerinci travel bureau owner Rangga said on Thursday.

The company has also been forced to cancel hiking packages for late December until the New Year and refunded those who had booked tours.

 

kerinci

Areas within a 3-kilometer radius of the crater of the volcano have been closed to the public by Kerinci Seblat National Park and Mt. Kerinci Monitoring Post authorities.

The volcano was still spewing ash as of Thursday, leaving a coating of ash on houses and plantations.

Source : Jakartapost

Photo : kerinci seblat national park

 

Katmai , Alaska :

58°16’44 » N 154°57’12 » W,
Summit Elevation 6716 ft (2047 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

 katmai

Strong northwest winds in the vicinity of Katmai and the Valley of Ten Thousand Smokes have picked up loose volcanic ash erupted during the 1912 Novarupta-Katmai eruption and carried it to the southeast today. As seen in a satellite image from this morning, the resulting resuspended ash cloud extends over Shelikof Strait. According to the National Weather Service, the ash is confined to an elevation of under 6000 feet above sea level.

This phenomenon is not the result of recent volcanic activity and occurs during times of high winds and dry snow-free conditions in the Katmai area and other young volcanic areas of Alaska. No eruption is in progress. All of the volcanoes of the Katmai area (Snowy, Griggs, Katmai, Novarupta, Trident, Mageik, Martin) remain at color code GREEN.

Resuspended volcanic ash should be considered hazardous and could be damaging to aircraft and health.

 

 katmai

Katmai – The valley of the 10,000 smoke, with the dome of the Novarupta and in the background, the volcano Trident.

Prior to 1912, Mount Katmai was a compound stratovolcano with four NE-SW-trending summits, most of which were truncated by caldera collapse in that year. Two or more large explosive eruptions took place from Mount Katmai during the late Pleistocene. Most of the two overlapping pre-1912 Katmai volcanoes are Pleistocene in age, but Holocene lava flows from a flank vent descend the SE flank of the SW stratovolcano into the Katmai River canyon. Katmai was initially considered to be the source of the Valley of Ten Thousand Smokes ash flow in 1912. However, the 3 x 4 km wide caldera of 1912 is now known to have formed as a result of the voluminous eruption at nearby Novarupta volcano. The steep walled young caldera has a jagged rim that rises 500-1000 m above the caldera floor and contains a 250-m-deep, still-rising lake. Lake waters have covered a small post-collapse lava dome (Horseshoe Island) that was seen on the caldera floor at the time of the initial ascent to the caldera rim in 1916. Post-1912 glaciers have formed on a bench within Katmai caldera.

Source : AVO , GVP.

Photos : Antony Van Eeten 2013

 

Nevado Del Huilà , Colombia :

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

Analysis and evaluation of the information obtained by the surveillance network of the volcano Nevado del Huila during the week between 23 and 29 November 2016. The Geological Survey of Colombia Volcanological and Seismological Observatory of Popayan reports that:

• During the period under review, 294 seismic events, of which 144 were related to rock fracturing (VT type) and 150 with fluid dynamics in volcanic ducts were recorded. Of these, 142 were classified as long-term (LP-type) events, six (6) as Tremor volcanic pulses (TR type), and two (2) hybrid type events (HB type) .

 

nevado del huila


• In the images obtained by the webcams of Tafxnú, Maravillas, Caloto, La Palma and Verdun, the degassing processes of the volcanic system were observed. Fumeolian emissions were characterized as white.
• During the measurement of the gases emitted by the volcano, on November 25, a flow of sulfur dioxide (SO2) equivalent to 481 tons / day between the municipalities of Pescador and Villa Rica (Cauca) was recorded.
• Detection sensors for soil deformation, magnetic fields and infrasonic signals did not show any variations associated with volcanic activity.

Therefore, it is concluded that during the period of evaluation of the volcano this one continued to show stable behavior.
The Geological Survey of Colombia continues to be attentive and report in a timely manner on any changes that may occur.

Source : SGC

Photo : oocities.org

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