November 16 , 2017. EN . Kilauea , Nevado del Ruiz , Ebeko , Kanlaon , Lopevi .

Home / blog georges Vitton / November 16 , 2017. EN . Kilauea , Nevado del Ruiz , Ebeko , Kanlaon , Lopevi .

November 16 , 2017. EN . Kilauea , Nevado del Ruiz , Ebeko , Kanlaon , Lopevi .

November 16 ,  2017.

Kilauea , Hawai :

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:
No significant change. Kīlauea Volcano continues to erupt at its summit and from the Puʻu ʻŌʻō vent on its East Rift Zone. In concert with summit deflation, the level of the lava lake has dropped overnight. The episode 61g lava flow is still producing scattered surface flow activity on the pali and the coastal plain. These flows pose no threat to nearby communities at this time. There have been no significant changes in ground deformation or seismicity rates across the volcano.

Summit Observations:
After weeks of little change, deflationary tilt at the summit began early yesterday afternoon and continues this morning. In concert, the level of the summit lava lake has dropped overnight as much as 10 m (33 ft). Sulfur dioxide gas emission rates continue to be high. Seismicity rates were at normal, background levels, with tremor fluctuations related to lava lake spattering. Current webcam views are here: https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_webcams.html.

Puʻu ʻŌʻō Observations:
In the past day, seismic activity has continued at normal, background rates. The tiltmeter on Puʻu ʻŌʻō cone showed no significant change. Webcams showed persistent glow from a small lava pond on the west side of the crater overnight. The sulfur dioxide emission rates from the East Rift Zone vents have been steady over the past several months, and remain significantly lower than the summit emissions.

Lava Flow Observations:
The episode 61g flows do not pose a threat to nearby communities at this time. Lava from the episode 61g flow continues to flow down the from the vent to the Kamokuna delta. Webcam views indicate that scattered breakouts remain active above the pali and on the coastal plain. At Kamokuna delta this morning, there is no plume is visible in webcam images.

Source : HVO
Photos : Bruce Omori

 

Nevado del Ruiz , Colombia:

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

With regard to monitoring the activity of the Nevado del Ruiz volcano, the COLOMBIAN GEOLOGICAL SERVICE informs that:
During the last week, the various monitoring parameters show that the Nevado del Ruiz volcano continues to display unstable behavior.

The seismicity caused by the fracturing of the rocks that make up the volcano, showed an increase in the number of earthquakes and a slight decrease in seismic energy released, compared to the previous week. The earthquakes were mainly located in the northern distal sectors, about 7.1 km from the Arenas crater, the North-West, South-East, South-West and, to a lesser extent, in the Arenas crater and its surroundings. . The depths of the earthquakes ranged from 0.9 to 7.7 km. The maximum magnitude recorded during the week was 1.8 ML (Local Magnitude), corresponding to the earthquake recorded on November 13 at 15:09 (local time), located 5.5 km southwest of the crater Arenas, at a depth of 4.4 km.

The seismic activity associated with the dynamics of the fluids within the channels of the volcanic structure showed similar behavior in the number of registered earthquakes and in the released seismic energy, compared to the previous week. This type of activity is characterized mainly by the occurrence of multiple earthquakes, long periods and very long periods, as well as tremor impulses. The earthquakes were located mainly in the vicinity of the crater of Arenas. The recording of seismic signals of this type, of higher energy that can be associated with emissions of gas and ash, is not excluded.

Volcanic deformation measured from electronic inclinometers, Global Navigation Satellite System (GNSS) stations and radar images shows stability behavior. No significant process of deformation of the volcanic structure has been recorded.

The volcano continues to emit water vapor and gases into the atmosphere, including sulfur dioxide (SO2), as evidenced by the values ​​obtained by the SCANDOAS stations installed on the volcano and the analysis of images satellites. In tracking the information provided by the MIROVA and NASA FIRMS portals, several thermal anomalies have been reported near the Arenas crater.
The column of gas and steam reached a maximum height of 1800 m measured at the top of the volcano on 09 November. The direction of the dispersion of the column was governed by the direction of the wind in the area, which during the week prevailed to the southwest and northwest relative to the crater Arenas.

The Nevado del Ruiz volcano continues at the level of yellow activity.

Source : Ingeominas.

 

Ebeko , Kamchatka :

Emissions of ash on the Ebeko volcano continue. This morning, the volcano again launched a column of ash at a height of 2.5 km.
A similar ash dump took place a month ago – October 18, 2017

The events that took place are another manifestation of the eruptive activity associated with the activation of the volcano, which began in October 2016.
More detailed information will be obtained after an eyewitness survey.

Reference information.
The Ebeko volcano (1156 m) is located in the northern part of Paramushir Island, 7 km west of the town of Severo-Kurilsk. The volcano is a stratovolcanic cone elongated in the southern direction, whose summit is crowned by three large craters (South, Middle, North) and a series of explosive lateral craters and effusive craters (~ 10 in all). In the Northeast sector of the North crater, is the modern active crater.

Photos: Emission of ash on Ebeko volcano, November 16, 2017. The images come from a surveillance camera installed at the beginning of October 2017 by the Kamchatka branch of the Federal Research Center « United Geophysical Service of the Academy Russian Science « and the Institute of Marine Geology and Geophysics. FEB RAS (IMGG FEB RAS).
SVERT IMGiG Group FEB RAS.

Source : Svert

 

Kanlaon , Philippines :

KANLAON VOLCANO BULLETIN 16 November 2017 08:00 A.M.

Kanlaon Volcano’s seismic monitoring network recorded two hundred seventeen (217) volcanic earthquakes during the past 24 hours. No degassing activity was observed during times when the summit crater was visible. Ground deformation data from continuous GPS measurements indicate inflation of the edifice since December 2015. Sulfur dioxide (SO2) emission was measured at an average of 1 tonne per day on September 6, 2017. Alert Level 2 status prevails over Kanlaon Volcano, which means that the volcano is undergoing a moderate level of unrest. There is probable intrusion of magma at depth which may or may not lead to a magmatic eruption.

The local government units and the public are strictly reminded that entry into the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the further possibilities of sudden and hazardous steam-driven or phreatic eruptions. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as ejecta from any sudden phreatic eruption can be hazardous to aircraft. DOST-PHIVOLCS is closely monitoring Kanlaon Volcano’s activity and any new development will be relayed to all concerned.

Source : Phivolcs

 

Lopevi , Vanuatu :

LOPEVI VOLCANO ALERT BULLETIN No12 issued by the Vanuatu Meteorology and Geohazards Department (VMGD) on 16th November 2017 at 10:31AM :

Volcanic unrest continues at Lopevi; The Alert Level remains at Level 2.
The current volcanic unrest at Lopevi is continuing in a steady state and the Volcanic Alert Level remains at Level 2. The volcanic unrest is likely to continue and there is a chance some eruptions may follow. Danger is restricted to visitors on the island.
The small 7-km-wide conical island of Lopevi (Vanei Vollohulu) continues to show signs of volcanic unrest. Observation photos in early November 2017 show that the activity at the volcano is continue to occur in the active craters below the summit crater. Observations photos and satellite images confirm the activity consists of ongoing gas and steam cloud. No eruptions are currently occurring.

 

In the past volcanic unrest at Lopevi has led to small or short-lived eruptions. There is a chance some eruptions may follow the actual unrest.
The last eruption at Lopevi was on 13 January 2017. This was a short-lived steam and gas eruption. The Volcanic Alert Level (VAL) was raised to Level 3 at the time of the eruption, and lowered to Level 2 on 17 January. It was further lowered to Level 1 on 20 February. Following the observation of steam plumes on the web camera (http://www.vmgd.gov.vu/vmgd/index.php/geohazards/volcano) on 23 September the VAL was again raised to Level 2. The current observations are consistent with the Alert Level 2 activity. Level 2 indicates ‘Major Unrest’; Danger is around the crater rim and specific area, considerable possibility of eruption and also chance of flank eruption.

Source : Geohazard

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