October 01 , 2017. EN. Agung , Kanlaon , Poas , Turrialba , Rincon de la Vieja .
October 01 , 2017.
Agung , Indonésia :
The level of volcanic activity and the increasing seismic status of Mount Agung (3142 m above sea level) in Karangasem Regency Province in Bali increased from level III (Siaga) to level IV (AWAS) from 22 September 2017 at 8:30 pm WITA. The seismicity continues to increase considerably and the status of activity remains at level IV (Awas). From yesterday to today, the volcano was visually clearly visible until the fog came. A plume of white steam rose from the crater with a height of 50 to 200 m above the peak.
According to the seismographic recordings, it was recorded:
On 01 October 2017 (from 00:00 to 06:00 WITA), 100 shallow volcanic earthquakes (VB), 180 volcanic earthquakes (VA), 7 local tectonic earthquakes (TL), one of which was felt.
Communities around G. Agung and climbers / visitors / travelers should avoid climbing and engaging in any activity in the hazardous area of the bottom of G. Agung Crater and within a 9 km radius of the crater of the G summit Agung has been added a sectoral expansion to the North-North-East, South-East and South-South-West over 12 km.
Source : VSI
Kanlaon , Philippines :
KANLAON VOLCANO BULLETIN 01 October 2017 08:00 A.M.
Kanlaon Volcano’s seismic monitoring network recorded fourteen (14) 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 1 status prevails over Kanlaon Volcano, which means that it is at an abnormal condition and has entered a period of unrest. 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 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
Poas , Turrialba , Rincon de la Vieja , Costa Rica :
Daily activity report of the volcanos Turrialba, Poás and Rincon de la Vieja, 30 September 2017, updated at 11h00.
The Poas continues with persistent and passive emission of a plume of water vapor, magmatic gases and fine particles (PM10, PM2.5, PM1) into the atmosphere. The plume rises between 500 and 1000 meters from the bottom of the crater and is dispersed by winds mainly around the volcano and towards the south-west and south of the active crater , towards the central valley, gulf and Nicoya Peninsula, then continues on the Pacific Ocean. Sismo-volcanic activity is zero, there are no volcanic tremors or long-period volcanic earthquakes (LP).
A moderate intermittent volcanic tremor is recorded on the Turrialba volcano, which usually begins with an intense phase of short duration associated with a strong exhalation of gas and ash, followed by a prolonged tremor associated with a passive eruption which longer periods with a duration between 1/2 hour and less than one hour. Isolated exhalations of ash are occasionally present with durations of less than 5 minutes, associated with small explosions with ballistic jets near the crater. Long-lived volcanic (LP) earthquakes continue to be recorded with moderate to large amplitudes.
During the day today, the plume of steam, gas and aerosol reached about 1000 meters above the top of the volcano. The wind has spread the volcanic plume of the Turrialba towards the west-north-west of the volcano, towards Heredia, Alajuela, San José, the Gulf and the Nicoya Peninsula, continuing on the Pacific Ocean, as indicated by data from the IMN National Meteorological Institute and the sulfur dioxide (SO2) and aerosol (PM) gas sensors from the OVSICORI-AN EMVA volcanic aerosol and gas monitoring station located in Coronado-San José and the model of dispersion of gas and aerosol generated with computer code AERMOD. These values are below the baseline values established in the Clean Air Regulations for Criterion Contaminants for Costa Rica applicable to human health. The source of the volcanic gases and aerosols detected by the station depends to a large extent on the rate of volcanic material emission and on the dominant wind direction. A perception of sulfur smell was reported by residents of Coronado and a drop of small amounts of ash in Moravia.
Rincón de la Vieja Volcano.
The seismic recordings on the Rincón de la Vieja volcano show a quasi-continuous volcanic tremor of low and variable amplitude. This tremor shows a slight increase in its amplitude since 7:50, today Sept. 30.
Yesterday, on 29 September at 6:00 am, two small volcano-tectonic (VT) earthquakes, remote from the active crater, associated with the activity of the volcano were recorded. The plume of water vapor, gas and aerosols rises between 500 and 800 meters above the crater, depending on the strength of the winds on the top of the volcano. A slight plume of steam is observed sporadically from the active crater after the eruption of September 29, 2017.
Source : Ovsicori