Décember 01 , 2017. EN. Agung , Ebeko , Fuego , Mauna Loa , Kilauea .
Décember 01 , 2017.
Agung , Indonesia :
Based on the analysis of visual and instrumental data and taking into account the potential threats of danger, the alert level of G. Agung is raised from level III (Siaga) to level IV (Awas). Since yesterday, visually the volcano is clearly visible until the appearance of the mist. A thick, gray, medium-pressure smoke rises from the crater and reaches an altitude of about 2000 m above the summit, sloping to the southeast, east and northeast. At night, glow of incandescent lava is observed in the crater of the volcano. This day there is no eruption. A quake was recorded at 07:49 WITA for 24 minutes.
The seismograph recorded on November 30, 2017:
22 shallow volcanic earthquakes (VB)
6 far-flung volcanic earthquakes (VA)
No local earthquake.
No earthquakes of eruption
A continuous tremor with an amplitude of 1 to 24 mm and a dominant at 1 mm
As of December 01, 2017 (00:00 – 18:00) it has been registered:
3 shallow volcanic earthquakes (VB)
No distant volcanic earthquakes (VA)
A continuous tremor with an amplitude of 1 to 4 mm (dominant 1 mm)
Recommendations: The communities around G. Agung and climbers / visitors / tourists should not climb and do activities in the danger zone around the crater of G. Agung and in all areas within a radius of 8 km around the crater from G. Agung. A sectoral extension has been added north-northeast and south-east-south-south-west up to 10 km from the crater of G. Agung. The risks of the estimated areas are dynamic and continuously assessed and can be modified at any time based on the most recent observation data from G. Agung.
Source : VSI / Magma .
Photo : Serge Shakuto
Ebeko , Kamchatka :
50.69 N, 156.01 E;
Altitude 3792 ft (1156 m)
Aviation Color Code: ORANGE
Moderate gas-vapor activity with emission of a certain amount of ash from the volcano continues. Ash explosion up to 16,400 feet (5 km) could occur at any time. Current activity could affect low-flying aircraft and Severo-Kurilsk airport.
A moderate explosive activity of the volcano continues. According to visual data provided by Severo-Kurilsk volcanologists, explosions sent ashes up to 2.0 km on 25-26 and 28-30 November, an ashfall was observed in Severo-Kurilsk on 28 November . Satellite data from KVERT showed that the volcano was calm or obscured by clouds
Source : Kvert.
Photo : T. Kotenko, IVS FEB RAS, KVERT
Fuego , Guatemala :
Type of activity: Vulcanian
Morphology: Composite Stratovolcan
Location: 14 ° 28’54˝ Latitude N; 90 ° 52’54˝ Longitude W.
Weather conditions: Clear
Wind: North East 8 km / h
Precipitation: 0.0 mm.
The volcano maintains a weak, white fumarole activity at an approximate height of 4,200 m (13,780 feet) dispersed to the south and southwest. OBVFGO reports 34 explosions, 22 with low and 12 moderate characteristics, generating gray ash columns that reach an approximate height of 4,500 to 4,700 meters (14,764-15,420 feet), moving south and northward. South West. The explosions are accompanied by moderate to strong rumblings, which cause moderate shock waves sensitive to 20-25 km in the volcanic perimeter. Incandescent pulsations reach a height of 25 meters above the crater, causing moderate to heavy avalanches on the crater’s outline, some with paths that reach the edge of the vegetation. Weak sounds similar to those of a locomotive with gaps of 2 to 4 minutes are heard.
Source : Insivumeh
Mauna Loa , Hawai :
19°28’30 » N 155°36’29 » W,
Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
Mauna Loa Volcano is not erupting. Rates of deformation and seismicity persist above long-term background levels.
Small-magnitude earthquakes continue to occur beneath the volcano. Shallow seismicity was concentrated beneath the summit caldera and upper Southwest Rift Zone, at depths less than 5 km (3 miles) and occurred at the rates that we’ve been observing during the past few weeks. Additional deeper seismicity (5-13 km or 3-8 miles) was scattered beneath the southeast and west flanks of the volcano.
Global Positioning System (GPS) and Interferometric Synthetic Aperture Radar (InSAR) measurements continue to show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone.
No significant changes in volcanic gas emissions were measured.
Source : HVO
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
No significant changes in the summit or East Rift Zone eruptions at Kīlauea Volcano are noted. Webcam views of the upper sections of the East Rift Zone 61g flow field have been obscured by the weather. Surface lava flow activity persists near the pali and in scattered areas on the coastal plain. These lava flows currently pose no threat to nearby communities. Lava lake activity continues at Kīlauea summit. Based on webcam views, the depth to the lava lake surface is roughly 38m (~125ft) beneath the adjacent floor of Halemaʻumaʻu crater. Low rates of ground surface deformation and seismicity continue across the volcano.
Kīlauea summit lava lake activity continues. The depth to the lake surface is approximately 38m (~125 ft) below the adjacent Halemaʻumaʻu floor based on webcam images. Low rates of seismic activity and ground surface deformations are noted. Summit tiltmeters are registering gradual inflationary tilt that began late yesterday morning. Summit sulfur dioxide emission rates remain high. Current webcam views are available at: https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_webcams.html.
Puʻu ʻŌʻō Observations:
Webcam views have been obscured by the weather. No significant changes are evident at Puʻu ʻŌʻō. Glow has been persistent at long-term sources within the crater and from a small lava pond on the west side of the crater. Low rates of seismic activity and ground surface deformation continue. The sulfur dioxide emission rate from the East Rift Zone vents has been steady over the past several months and remains significantly lower than the summit emission rate.
Lava Flow Observations:
Webcam views of the episode 61g flow field are obscured by weather conditions. Available views show surface lava flow activity persisting near the pali and in scattered areas along the coastal plain. These lava flows pose no threat to nearby communities at this time. A plume from the Kamokuna ocean entry area is not evident.
Source : HVO
Photos : Bruce Omori.