Volcanic activity worldwide 14 Jun 2018: Dukono volcano, Agung, Kilauea, Yasur, Galeras, Sakurajima,...
Thursday Jun 14, 2018 21:00 PM |
Map of today's active volcanoes
Satellite image of Sakurajima volcano on 13 Jun 2018
Satellite image of Dukono volcano on 14 Jun 2018
Satellite image of Dukono volcano on 13 Jun 2018
Photograph of the 12 June 2018 dissipating ash plume above Agung volcano (Bali, Indonesia) by Jackie Zwahlen
Image taken on Tuesday morning June 12, 2018, showing the active perched channel with braided lava flows that is fed by Fissure 8 (fountain visible in the distance). (HVO/USGS)
This aerial overview of June 12, 2018, shows the dramatic change that Halema‘uma‘u vent underwent over the past few weeks. The image looks west across the crater, with the former Halema‘uma‘u crater floor in the center and the deepest part in the foreground. Ground cracks circumferential to the crater rim can be seen cutting across the parking lot (left). (HVO/USGS)
Earthquake locations under Sierra Negra volcano since Jan 2017 (image: IG)
Small ash emission observed from the Pasto Volcano Observatory on 17 December 2012 (INGEOMINAS)
Sakurajima (Kyushu, Japan): (13 Jun) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA AT 20180613/2304Z 15NM SE OF RJFK FL060 EXTD NW
Satellite image of Sabancaya volcano on 14 Jun 2018
Dukono (Halmahera): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: CONTINUOUS VA EMISSION TO FL060 OBS VA DTG:14/1600Z
Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: CONTINUOUS VA EMISSION TO FL070 EST VA DTG:13/2200Z
Agung (Bali): Agung volcano on Bali (Indonesia) has become again more active again with 2 ash plume producing eruptions in the past few days. Satellite images of Agungs’s crater obtained before and after the 10 June 2018 nighttime explosive event show that the crater topography remained the same but that there were some colour changes probably due to the freshly ejected material. A second explosion late morning of Wednesday 12 June produced a quickly dissipating ash plume that was photographed and spread through social media multiple times. It also resulted in a small thermal anomaly registered by Mirova, the first one in 9 days time.
Yasur (Tanna Island, Vanuatu): (14 Jun) Volcanic Ash Advisory Center Wellington (VAAC) issued the following report: INTERMITTENT LOW-LEVEL ERUPTIVE ACTIVITY.
Kilauea (Hawai'i): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NEW VA EM AT 1320Z.
Over the past 2 days, Kilauea's eruptive activity in the lower East Rift Zone persisted with little change. Fissure 8 continues to vigorously effuse lava fountains of varying heights, sometimes 10 meter (35 feet) above the growing cone of cinder and spatter which is now about 45 m (140 ft) at its highest point.
This fountaining continues to feed huge amounts of lava through the massive perched lava channel that runs for about 8 miles (13 kilometer) before reaching the ocean at Kapoho. According to HVO/USGS calculations, there is at least 100 cubic meters of lava transported through this fast moving channel every second! This is the equivalen to 26,000 U.S. gallons flowing by per second or 3 tanker trucks racing by per second... The 12 June 2018 thermal image shows that after ca. 2,5 miles the wide lava flow channel changes into a braided flow for ca 2,5 miles before turning east ward into a single, narrower channel. At Four Corners, the ‘a‘a flow appears to be channelising as well, transporting lava more efficiently through the area before pushing it into the mile wide flow at Kapoho.
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Day by day, Kilauea’s summit caldera continues to subside and Halema‘uma‘u crater keeps crumbling with every explosive event. Over the past week, such explosions occurred once per day and have been registered as magnitude 5+ earthquakes. They are however not typical earthquakes at all since there is no major fault-rupturing event. Instead, pressure builds up beneath the rubble pile that is choking the conduit and is released as an explosion – a continuous seismic cycle.
HVO/USGS released new images of the dramatic changes that have occurred Halema‘uma‘u crater in the past couple weeks. The crater’s steep walls continue to slump inward and downward in response to the ongoing summit subsidence. The former Halema‘uma‘u crater floor has subsided at least 100 m (about 300 ft) and the deepest part of Halema‘uma‘u is now about 300 m (1,000 ft) below the crater rim. Circumferential to the crater rim there are both newly formed and growing ground cracks which are by now cutting across the parking lot of the former Halema‘uma‘u visitor overlook, which was closed in 2008 when a lava lake re-appeared in the crater.
Sulfur dioxide emissions from the volcano's summit have dropped to levels that are about half those measured prior to the onset of the current episode of eruptive activity. This gas and minor amounts of ash are being transported downwind, with small bursts of ash and gas accompanying intermittent explosive activity. (HVO/UGS)
Sierra Negra (Isabela Island, Galapagos): (14 Jun) A seismic crisis has started under the volcano recently, suggesting that the volcano could be approaching a new eruption in the near or medium-term future (weeks to months).
The Geophysical Institute of Ecuador (IG) reported last week that seismic activity now has reached levels that could be interpreted as signs of an approaching eruption. Seismic activity at the volcano has been gradually increasing over the past two years, but reached and maintained very high levels since mid May, with an average of 42 local events per day. A record number of 104 quakes occurred on 25 May. The largest-so-far quake was a magnitude 4.8 on 8 June. This and several others have been widely felt by people in the vicinity.
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Galeras (Colombia): Two moderate earthquakes occurred near Galeras, Colombia's most active volcano, at a depth of ca 30 km. According to the Colombian Geological Service, the first quake occurred at 4:35 a.m. local time (about 0935 GMT) and registered 4.5 on the Richter scale. A minute later, a second quake measuring magnitude-4.3 hit, several mild aftershocks have followed. Two people died when their house was crushed by falling rocks and officials suspended classes in local schools as a precaution. The earthquakes have placed local authorities in the nearby city of Pasto, capital of Narino Province, on high alert as they fear that the currently dormant volcano might enter a new eruptive phase.
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: CONTINUOUS EMISSION OF STEAM AND PSBL LGT VA
Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: VA NOT IDENTIFFIABLE FM STLT DATA OBS VA DTG:14/2300Z
Volcanic activity worldwide 13 Jun 2018: Pacaya volcano, Dukono, Agung, Reventador, Kilauea, Yasur, ...
Wednesday, Jun 13, 2018
Sakurajima (Kyushu, Japan): (13 Jun) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA AT 20180612/2250Z FL060 EXTD SE OBS VA DTG:12/2320Z ... [more]
Volcanic activity worldwide 12 Jun 2018: Fuego volcano, Popocatépetl, Ibu, Dukono, Reventador, Kila...
Tuesday, Jun 12, 2018
Sakurajima (Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20180612/1040Z FL080 EXTD S OBS VA DTG:12/1040Z ... [more]
Volcanic activity worldwide 11 Jun 2018: Fuego volcano, Popocatépetl, Dukono, Reventador, Kilauea, ...
Monday, Jun 11, 2018
Ebeko (Paramushir Island): (11 Jun) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20180611/0130Z FL090 EXTD SE REPORTED OBS VA DTG:11/0140Z ... [more]
Volcanic activity worldwide 10 Jun 2018: Fuego volcano, Dukono, Kerinci, Agung, Reventador, Kilauea,...
Sunday, Jun 10, 2018
Ebeko (Paramushir Island): (10 Jun) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20180609/2310Z FL070 EXTD SE REPORTED OBS VA DTG:10/0100Z ... [more]
Volcanic activity worldwide 9 Jun 2018: Dukono volcano, Reventador, Kilauea, Sakurajima, Sabancaya, Ebeko
Saturday, Jun 09, 2018
Ebeko (Paramushir Island): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: POSS ERUPTION OBS AT 20180609/1130Z FL060 EXTD SE OBS VA DTG:09/1200Z ... [more]