June 23 , 2016. EN. Bulusan , Fuego , Nevado Del Ruiz , Awu .
June 23 , 2016.
Bulusan , Philippines :
Bulusan Volcano exhibited vigorous steaming activity characterized by dirty white steam plumes that crept downslope towards the west-northwest direction. This activity was observed visually from around 9:00 AM to 9:18 AM today. The dirty white plumes suggest a low energy ash emission. No seismic signal was detected prior or during the event indicating a shallow volcanic source.
Raden Dimaano, head of the Sorsogon Provincial Disaster Risk Reduction and Management Council, said some villages near the slopes of Mt. Bulusan in Juban town had been experiencing minimal ash fall after the ash plume was blown northwest.
Alert Level 1 (abnormal) remains in effect over Bulusan Volcano. This indicates that hydrothermal processes are ongoing beneath the volcano that may lead to more steam-driven eruptions. The local government units and the public are reminded that entry to the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the possibility of sudden and hazardous steam-driven or phreatic eruptions.
Source : Phivolcs, inquirer.net.
Photo : Wikipedia
Fuego , Guatemala :
Activity type : vulcanian
Morphology : composite Stratovolcano
Geographical location: 14 ° 28’54 « N Latitude; 90 ° 52’54« W. Longitude
weather conditions: Clear
Wind: East 5 km / h
Maintains a degassing activity low white fumaroles at a height of about 4200 meters. (13,779feet) that are dispersed to the northwest, west and southwest.
It was recorded two to four small explosions per hour, with a gray emission column, rising to a height of about 4200-4500 meters (13,779 -14,763pies) moving up to 8 kilometers to the West, North West and South West of the volcanic complex. These
explosions generated low rumbling and glowing pulse at a height of 100 meters above the crater (328 feet), feeding a lava flow to the canyon of Las Lajas, reaching a length of 600 meters; low and moderate avalanches are generated around the edge of the crater.
Source : Insivumeh
Photo : scottmsaltphotography.com
Nevado Del Ruiz , Colombia :
Weekly activity report of the volcano Nevado del Ruiz, from June 14 to June 20, 2016
The level of activity continues at:
Activity level Yellow or (III): changes in the behavior of volcanic activity.
Regarding the monitoring of the activity of the Nevado del Ruiz volcano, the Colombian Geological Service reports that:
During the last week, the Nevado del Ruiz volcano presented a seismic activity associated with fluid dynamics in volcanic conduits, which showed an increase compared to the previous week, and seismicity related to the fracturing of rocks inside the volcano, which showed a slight decrease in the number of earthquakes and seismic energy released.
The earthquakes fracture type of rock inside the volcano, were mainly in the seismogenic zones of the North, proximal and distal to 7.1 km and 4.3 km on average of the Arénas crater, respectively, and depths varying between 5.3 and 8.1 km. Dispersed manner, this type of seismic activity was also recorded in the areas of North-East and South-Southeast of the volcano at depths between 1.0 and 5.3 km. The maximum magnitude recorded during the week was 1.6 ML (local magnitude), corresponding to an earthquake recorded on June 19 at 11:44 (local time) in the southern sector, 3.3 km from the Arenas crater at a depth of 2.6 km.
Seismic activity related to fluid dynamics in volcanic conduits, was characterized by the appearance of long period earthquakes (LP) and very long period (VLP), pulses of tremor and multiple earthquakes of fluid movements with different energy levels. Some of them with more energy than the previous week. Many of these seismic signals have been associated with the processes of ash emissions into the atmosphere. Also during this week, continuous volcanic tremor was recorded at very low power levels. As for the location of this type of seismicity, it was mainly located in the crater, next to this sector and in the South and Southeast of the volcano area.
The volcanic deformation measured from electronic inclinometers, global navigation satellite systems (GNSS) and satellite images to track changes in the tilt, the position and shape of the volcano (respectively), continues to show Changes .
The volcano continues to emit into the atmosphere large amounts of steam and water gas, including sulfur dioxide (SO2), as it was felt by the permanent stations SCANDOAS installed in the Volcano area and satellite imagery. In monitoring the satellite images provided by the site Mirova, no thermal anomaly has been identified.
The column of gas, steam and ash, from time to time, reached a maximum height of 650 meters above the summit of the volcano, on June 14 The direction of the dispersion of the column was in line with the prevailing wind in the area, which during the week showed a predominant direction towards the west of the volcano.
In June 22, 2016 at 12h13 (local time), a volcano-tectonic earthquake, combined with the fracturing of the rock inside the volcano, with a magnitude of 3.0 ML (local magnitude), located 3.5 km south – east of Arenas crater was recorded at a depth of 3.5 km.
The location obtained
Latitude: 52.30 4˚ ‘N
Length: 75˚ 20.61 ‘W
Depth: 3,5 km
Magnitude: 3.0 ML
Source : SGC
Awu , Indonesia :
Elevation 1320 m
PVMBG reported that the number of earthquakes at Awu had risen significantly on 11 May and remained elevated through 14 May; a downward trend in seismicity became evident on 21 May. Earthquake hypocenters were located at depths between 1 and 2 km. The Alert Level was lowered to 2 (on a scale of 1-4) on 14 June; residents and tourists were advised to stay 4 km away from the crater.
Based on visual analysis, instrumental and the potential danger of the threat, the activity level of the Awu volcano is reduced from LEVEL III (Siaga) to LEVEL II (Waspada) since June 14, 2016 12h00.
Intensive monitoring and evaluation of the level of activity and risk of eruption of G. Awu continues. If there is a significant change in volcanic activity, the level of activity and its recommendations can be reviewed and modified in accordance with the level of threat.
Source : GVP , PVMBG.
Photo : Mapio