December 19, 2015. EN. Yasur , lokon-Empung , Kilauea .
December 19, 2015.
Yasur, Vanuatu :
Summit 1184ft (361m)
Current Vanuatu Volcano Alert Level: Level 2
The Alert Level for Tanna Volcano remains at Level 2.
This means that the Yasur activity has changed. Explosions become intense, volcanic bombs may fall in and/or around the crater and volcanic gas and ashes can also affect some villages. The area of risk remains around the volcanic crater and in areas expose to trade winds.
This is a reminder to all visitors to observe this volcano away from the crater rim to avoid volcano activity related impacts.
All communities, villages, visitors and travel agencies have to seriously consider this information.
The Department of Meteorology and Geohazards will continue to closely monitor this volcano activity. More information will be provided accordingly when necessary.
Source : Geohazards
Photo : lesvoyagesdenousdeuxailleurs
Lokon–Empung, Sulawesi, Indonésie:
Elevation 1580 m
Although inclement weather sometimes obscured views of Lokon-Empung’s Tompaluan Crater, PVMBG reported that during 3-10 December observers at the post in Kakaskasen Tomohon (North Sulawesi, 4 km from the crater), saw white plumes rising as high as 400 m above the crater.
Seismicity fluctuated, but the seismic spectral amplitude measurement (SSAM) had shown a gradually increasing trend over the previous 3-4 months. The Alert Level remained at 3 (on a scale of 1-4). Residents and tourists were reminded not to approach the crater within a radius of 2.5 km.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi , GVP .
Photo : Photovolcanica
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
Eruptions continue at Kīlauea Volcano’s summit and East Rift Zone. Seismic activity and deformation rates throughout the volcano are within background levels. Field observations near Puʻu ʻŌʻō yesterday confirmed lava ponds both within and on the east rim of the crater. Scattered lava flow activity continues on the June 27th lava flow field within about 6 km (4 mi) northeast of Puʻu ʻŌʻō, but currently poses no threat to nearby communities.
Pu‘u ‘O‘o overflight: An incredible new skylight high on Pu‘u ‘O‘o’s north flank revealed a violently sloshing river of lava.
The lava lake remains active and circulating within Halemaʻumaʻu Overlook crater. Seismic tremor levels have been variable but within background values. Tilt has leveled off in the past day, after accumulating about 3 microradians of inflationary tilt since Monday. The lava lake level has fluctuated slightly throughout the past day, but the average level remained about 38 m (125 ft) below the Halemaʻumaʻu crater floor. Summit sulfur dioxide 24-hr average emission rates ranged from 1700-2700 metric tons/day when last measured on December 9 and 10.
A view of Pu‘u ‘O‘o crater, facing south. The three tiny glowing spots expelling gas on its north flank is a new amazing skylight.
Puʻu ʻŌʻō Observations:
Field work yesterday confirmed the presence of an active lava pond on the east rim of Puʻu ʻŌʻō crater, where webcam images have been showing an incandescent, fuming source, in addition to the usual persistent glow sources within the crater. Seismic activity remains low. Puʻu ʻŌʻō tiltmeters recorded no significant tilt. The sulfur dioxide emission rate from all East Rift Zone vents was about 280 metric tons/day when it was last able to measured, on November 30.
June 27th Lava Flow Observations:
A helicopter overflight yesterday confirmed continued activity within the Puʻu ʻŌʻō flow field. Active flows are scattered within about 6 km (4 mi) of Puʻu ʻŌʻō and are not threatening any nearby communities.
Source : HVO.
Photos : Bruce Omori.