September 15 , 2017. EN. Agung , Guallatiri , Fuego , Sheveluch .
September 15 , 2017.
Agung , Indonésia :
Geographically, G. Agung is located at the coordinates of 8. 342o Longitude South and 115.508o latitude West. The peak of G. Agung is at an altitude of 3145 m above sea level.
Visual observations during the period from Saturday, July 1, 2017 to Wednesday, September 13, 2017 (74 days) are generally sunny / rainy, with maximum precipitation of 67.9 mm, light to moderate winds to the east, and the West . The air temperature is about 19 to 31 ° C. Humidity 89%. Air pressure 84 mmHg. The volcano is clearly visible until it is covered with clouds. The fumaroles are nil.
Visually, from the Volcano Observatory Station, during the past 3 months there have been no significant changes in height and density of smoke from the G. Agung crater. According to the Report of 13 September 2017, a solfatare explosion at the base of the crater was observed only in April 2017.
The degree of seismicity of G. Agung generally seems to indicate an increase (attached figure). Recorded volcanic earthquakes (VA), which indicate a process of fracturing of rocks within the volcano, caused by magmatic fluid pressure from the depths, have increased steadily since August 10, 2017 with volcanic seismic amplitude from 3 mm to 10 mm. Shallow volcanic earthquakes (VBs) have begun to increase steadily since August 24, 2017 with volcanic seismic amplitude ranging from 2 mm to 7 mm.
The activity of local tectonic earthquakes indicating changes in rock stress around G. Agung is also recorded and has been steadily increasing since 26 August 2017 with an amplitude ranging from 3 mm to 22 mm.
The thermal images recorded by the MODIS sensors on the Terra and Aqua (NASA) satellites during the period January to September 2017 showed no hot spot on the Agung. This indicates that no significant magmatic material exists on the surface.
On the basis of the results of the analysis of the visual and instrumental data, there is an increase in the activity of G. Agung with the recorded seismicities mentioned above, indicating that the volcanic activity of G. Agung is currently in an unstable state so that the probability of eruption increases, although an incident can not be determined.
Based on the results of the analysis of the visual and instrumental data and taking into account the potential threats of danger, G. Agung’s level of activity is increased from level I (normal) to level II (Waspada).
Communities around G. Agung and climbers / visitors / tourists must not move, climb, and camp in the area of the G. Agung Crater and in all areas within a radius of 3 km around the upper crater of G. Agung or at an altitude above 1500 m above sea level.
Communities around G. Agung and climbers / visitors / tourists must remain calm while keeping their vigilance.
The Geological Hazards and Volcanology Center, the Geological Agency, continues to coordinate with the BNPB, the Bali Provincial BPBD and the Kabupaten Karangasem BPBD to provide information on the activities of G. Agung.
Source : VSI
Photo : philhillphotography.com.
Guallatiri , Chile :
Special volcanic activity report (REAV).
Region of Arica and Parinacota. 14 September 2017.19: 8 pm (local time).
The National Geological and Mines Service (Sernageomin) of Chile announces the following information obtained from the monitoring teams of the National Volcanic Surveillance Network (RNVV), processed and analyzed at the Southern Andes Volcanological Observatory (OVDAS):
Yesterday, September 14, 2017 at 6:32 pm local time (9:32 pm GMT), monitoring stations near the Guallatiri volcano recorded one (1) volcano-tectonic earthquake (associated with rock fracturing). The event was located 14.6 km south-southwest (SSO) of the main crater.
The location obtained was as follows:
TIME OF ORIGIN: 18h32 hl (GMT-3)
LATITUDE: 18 ° 32’37.8 « South
LONGITUDE: 69 ° 08’0.6 « West
DEPTH: 4,0 Km
LOCAL MAGNITUDE: 3.0 Ml
At the time of publication of this report, three replicas of lower magnitudes were recorded. There is no information from the authorities or surrounding communities on the perception of the event in neighboring areas.
The volcanic technical alert is maintained at the Green level.
The Sernageomin continues with on-line monitoring, and will inform changes in volcanic activity in the area.
Source : Sernageomin
Photo : Karsten rau .de
Fuego , Guatemala :
SPECIAL VULCANOLOGICAL BULLETIN BEFGO # 150-2017, Guatemala September 14, 2017, 3:30 pm (local time).
END OF THE VOLCAN FUEGO PAROXYSM (1402-09)
Activity type: Vulcanian
Morphology: Stratovolcan composite
Geographical location: 14 ° 28’54 « North Latitude; 90 ° 52’54˝ West Longitude
The eruption n ° 09-2017 ended, it lasted about 35 hours, the activity of the volcano Fuego shows a decrease of its energy.
The Fuego Volcano Observatory, OVFGO, reports low to moderate explosions, generating ash columns that reach a height of about 4,500 ms (14,764 feet) and disperse for more than 10 kilometers to the east, West and South-West. The explosions are accompanied by weak to moderate rumblings that cause a shallow wave, causing vibrations in the roofs of houses near the volcano, and locomotive-like sounds.
Low to moderate avalanches can be observed on the outline of the crater, also in the direction of the Seca ravine (Santa Teresa), causing fine particles to be lifted towards the southwest flank of the volcano. As a remnant of the eruption, there is a flow of lava in the direction of the Seca ravine, it will disappear in the next few days.
According to the observations of the seismic activity, it tends to decrease, however, the flow of lava still persists to a lesser extent.
Source : Insivumeh
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 32,800-49,200 ft (10-15 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.
Explosive activity of Sheveluch volcano on 08 September, 2017.
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. According to satellite data by KVERT, a thermal anomaly over the volcano was noting all week. Several explosive events occurred on 08-13 September: explosions sent ash up to 9-10 km a.s.l., ash plumes drifted for about 400 km to the north-west, east and south-east from the volcano.
Source : Kvert
Photo : G. Teplitsky