Volcanic activity worldwide 12 Sep 2013: Lokon-Empung, Sakurajima, Suwanose-jima, Santa María / San...
Thu, 12 Sep 2013, 17:0317:03 PM |
Explosion from Shiveluch volcano this morning (KVERT webcam)
Shiveluch (Kamchatka): The volcano continues to slowly extrude a new lobe of viscous lava from the dome. This process is accompanied by occasional explosions and ash emissions such as one this morning that produced a plume rising to 19,000 ft (5.8 km) altitude.
Ash emission from Lokon volcano this morning (VSI webcam)
Sakurajima (Kyushu, Japan): An explosion this morning produced an ash plume rising to 14,000 ft (4.2 km) altitude. This is the latest of the currently intense eruptive phase of ash emissions and frequent vulcanian explosions (at least 6 during yesterday).
JMA reported that 15 explosions from Sakura-jima's Showa Crater ejected tephra as far as 1,300 m during 2-6 September. Incandescence from the crater was visible some nights. An explosion at 1100 on 4 September generated an ash plume that rose 2.8 km and drifted S, causing ashfall in areas downwind including Arimuracho (4 km SSE). Tephra 4 cm in diameter was confirmed in an area 3 km S, and tephra 1 cm in diameter was reported 10 km SSE.
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Suwanose-jima (Ryukyu Islands): A new eruption was reported this morning producing an ash plume rising about 1 km above the Ontake crater to an altitude of 6,000 ft (1.8 km) and drifting NW.(VAAC Tokyo)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): RVO reported that during 1-31 August low-level activity at Rabaul caldera's Tavurvur cone consisted of pale gray plumes with variable but mostly minor ash content. Intervals between emissions ranged from tens of seconds to hours.
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Manam (Papua New Guinea): RVO reported that after a small eruption from Manam's Southern Crater during 27-28 August, activity subsided. Diffuse gray-brown ash plumes, emitted at short intervals, rose from the crater during 29-30 August, and crater incandescence was noted. Seismicity declined and was at a low level by the end of the day on 31 August.
Ulawun (New Britain, Papua New Guinea): RVO reported that activity at Ulawun was low during 4-31 August; emissions from the summit crater consisted of white vapor until 16 August, and were gray during 17-31 August.
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Lokon-Empung (North Sulawesi, Indonesia): Activity remains elevated. During yesterday, no significant explosions occurred, but the volcano erupted again several times with small explosions and ash emissions today, such as on the attached picture and time-lapse video:
Santa María / Santiaguito (Guatemala): INSIVUMEH reported that at 1405 on 5 September a lahar descended Santa María's Nima I drainage on the S flank carrying mostly fine sediment and 50-cm-diameter blocks, but also a small percentage of blocks 1-2 m in diameter. During 5-10 September white plumes rose 200-500 m and drifted W, SW, E, and NE.
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Arenal (Costa Rica): OVSICORI-UNA reported that plumes composed mainly of water vapor rose from the NE and SE edges of Arenal's Crater C on 8 and 9 September. Tremors indicative of hydrothermal and magmatic activity were detected on 8 September.
The report noted that seismic and fumarolic activity had been very low in the past three years; however steam plumes associated with heavy rains had been frequent. (Smithsonian/USGS Weekly Volcanic Activity Report)
Tue, 10 Sep 2013, 14:10
Volcanic activity worldwide 10 Sep 2013: Lokon-Empung, Santa María / Santiaguito, Pacaya, Fuego, Kl...
Kliuchevskoi (Kamchatka): The effusion of a lava flow on the SW flank and strombolian activity at the summit vent continue. Avalanches are being formed from detaching lava blocks from the flow on the steep flow. KVERT reports moderate seismic activity with strong tremor, that obscure the signal from nearby Bezymianny volcano. A large thermal anomaly can be seen on satellite data. ... read all
Mon, 9 Sep 2013, 17:03
Sat, 7 Sep 2013, 17:03
Etna (Sicily, Italy): Last night, very deep-seated strombolian activity could be observed from both the Bocca Nuova and the New SE crater. This indicates that (similarly to early this year) magma has risen into the upper parts of the conduits beneath both vents. It might only be a question of time until this activity increases (perhaps even towards new paroxysms) and maybe becomes focused on one of the two craters. ... read all
Fri, 6 Sep 2013, 13:54
Volcanic activity worldwide 6 Sep 2013: Ubinas, Sakurajima, Rabaul (Tavurvur), Pacaya, Fuego, Karyms...
Etna (Sicily, Italy): Since a few days ago, the New SE crater has been producing weak ash emissions occasionally. Whether this is the precursor to more vigorous activity and when this will occur, is difficult to say at the moment, but it is a sign that the volcano is waking up from the slumber it has been in during the past 4 months. ... read all
Thu, 5 Sep 2013, 17:04
Sakurajima (Kyushu, Japan): (4 Sep) A moderately large vulcanian explosion occurred this morning, producing significant fallout of lapilli and small bombs in several kilometers distance. Cars parked at the Arimura Lava observatory observation point to the south of the volcano were damages and windshields broken, at a distance of about 4 km. There are no reports of injuries to people. ... read all