November 27 , 2017. EN. Agung , Fuego , Kanlaon , Popocatépetl .
November 27 , 2017.
Agung , Indonesia :
On November 26, 2017, at 05:05, the magmatic eruption observed rises to a height of 2000 meters above the summit, with a thick column of gray ash. The ashes are spreading to the South-East and East, the thickest falls of ashes fall in the village of Sibetan (5 mm). The ash spreads furthest to Nusa Penida, Lombok and Sumbawa.
Then the intensity of the ash eruption increased to 5:45 am with a height of 3000 meters from the summit of the peak, reaching a height of 3300 m at 11:00.
Two explosions were heard from the crater from the PGA Post, 12.5 km away from the crater, accompanied by lightning at 20:51.
Incandescence at the top is increasingly observed at night by the CCTV at Bukit Asah and the Pos PGA Agung at Batulompeh.
On November 26, 2017, seismicity intensified and was recorded at the seismic station of G. Agung. from Kempempaan, from 00:00 to 24:00: 31 volcanic earthquakes, 2 low frequency earthquakes, 1 seismic eruption and one continuous eruption tremor. The continuous tremor has a maximum amplitude of 0.5 to 7 mm (dominant 3 mm) accompanied by harmonic tremors and shallow volcanic earthquakes.
On November 27, 2017, from 00:00 to 06:00, an eruption earthquake was recorded once, as well as a volcanic earthquake and a local Tectonic earthquake. Tremors are constantly observed with a dominant amplitude of 1 mm to 2 mm.
The 5-point GPS monitoring around the Gunung Agung does not show a clear deformation pattern.
The inclinometer at Yehkori about 4 km from the top of Mount Agung shows an inflation pattern with 3 microradians a day.
November 26, 2017 from 9:30 to 23:30
Using a DOAS drone, we obtain a flow of SO2: 5494 (+/- 1618) tonnes / day (at a distance of 12 km from the crater in the south-east part of G. Agung).
Satellite remote sensing:
The Sentinel-2 satellite data from November 9, 2017 still records the presence of warm images on the surface of Mount Agung crater.
Data from the Aster TIR satellite of November 15, 2017 show an increase in the number of pixels / warm images, to 12 times more than the previous month (October 14, 2017).
GOME-2 satellite data show the presence of SO2 magmatic gas concentrations ranging from 1000-2000 tonnes / day due to the Gunung Agung eruption on November 26, 2017.
D-InSAR satellite data indicates inflation (swelling) before the November 21, 2017 eruption.
The Himawari satellite (based on a report by VAAC Darwin) reports that the ash height of the Mount Agung eruption reached 8,000 meters.
So far, based on the data observed and exhaustively analyzed by the PVMBG, the activity of G. Agung is supposed to indicate an increasing trend.
If an eruption continues to occur, there is considerable disaster potential. This can happen because at that time many people live in disaster-prone areas. In addition, the people around Mount Agung also do not have enough experience to deal with the eruption of Mount Agung because this volcano erupted for the last time in 1963 (54 years ago).
Based on the result of visual and instrumental data analysis as well as on the potential of the threats of danger, from November 27, 2017 at 06:00 WITA the status of Gunungapi Agung moves from Level III (Alert) to Level IV (Awas) .
Source : VSI / Magma.
Photos : Gaye Clifford , Firdia Lisnawati/AP/dpa
Fuego , Guatemala :
Type of activity: Vulcanian
Morphology: Composite Stratovolcano
Location: 14 ° 28’54˝ Latitude N; 90 ° 52’54˝ Longitude W.
Weather conditions: Clear
Wind: North East 10 km / h
Precipitation: 0.0 mm.
It maintains a weak, white fumarole activity at an approximate height of 4,100 m (13,451 ft) dispersed to the south. The OBVFGO reports 25 explosions, 14 with weak and 11 moderate characteristics, generating gray ash columns that reach an approximate height of 4500-4 700 meters (14 764-15 420 feet), moving 15 km to the South . The explosions are accompanied by weak, moderate and strong rumblings, which cause a moderate moderate shock wave 20 km from the volcanic perimeter. Incandescent impulses reach a height of 300 meters above the crater, causing weak and moderate avalanches with distances reaching the edge of the vegetation.
Source : Insivumeh
Photo : David Rojas
Kanlaon, Philippines :
KANLAON VOLCANO BULLETIN 27 November 2017 08:00 A.M.
Kanlaon Volcano’s seismic monitoring network recorded nineteen (19) volcanic earthquakes during the past 24 hours. Degassing at the active vents could not be observed due to thick clouds covering the summit. Ground deformation data from continuous GPS measurements indicate slight inflation of the edifice since December 2015.
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
Popocatépetl , Mexico :
Popocatépetl volcano is continuously monitored 24 hours a day. Any change in activity will be reported in a timely manner.
In the last 24 hours, through the monitoring systems of the Popocatépetl volcano, 318 low intensity exhalations accompanied by water vapor and gas have been identified. Two trains of exhalations were presented yesterday at 11h10 with a duration of 132 minutes and one more at 19h29 with a duration of 35 minutes approximately. In addition, a volcano-tectonic earthquake was detected today at 07:23 with a magnitude Mc of 3.7.
Popocatépetl volcano, the new central crater, evolving since 1996. Overview of the Popocatépetl of 25 November 2017, Ministry of the Interior-CENAPRED.
At the time of this report the volcano is observed with an emission of water vapor and gas, dispersing in the South-West direction
CENAPRED urges not to approach the volcano and especially the crater, for the danger of falling ballistic fragments and in case of heavy rains, to stay away from the bottom of ravines, because of the danger of landslides and of mudslides.
Source : Cenapred