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Volcanic activity worldwide 15 May 2014: Santa María / Santiaguito, San Miguel, Shishaldin, Merapi,...

do, 15 mei 2014, 21:00
21:00 PM |
Small pyroclastic flow at Sinabung on the morning of 13 May
Small pyroclastic flow at Sinabung on the morning of 13 May
Shishaldin volcano yesterday evening (AVO webcam)
Shishaldin volcano yesterday evening (AVO webcam)
Microseismic activity at Chaparrastique volcano (SNET)
Microseismic activity at Chaparrastique volcano (SNET)
Sinabung (Sumatra, Indonesia): (15 May) Activity at the volcano remains weak. Slow lava extrusion continues along with occasional ash venting and small pyroclastic flows triggered by collapse of parts of the viscous lava lobe on the southern flank.

Merapi (Central Java, Indonesia): PVMBG reported that during 2-8 May white plumes rose as high as 650 m above Merapi. Thumping noises continued to be reported from multiple observation posts. Seismicity fluctuated but remained above background levels.
The Alert Level remained at 2 (on a scale of 1-4) on 29 April. (Smithsonian / USGS Weekly Volcanic Activity Report 7-13 May 2014)

Dukono (Halmahera): (15 May) Activity at the volcano seems to be increasing - the sighting of ash plumes on satellite imagery has become a daily job of VAAC Darwin's watchful crew. This morning, a volcanic ash plume at estimated 10,000 ft (3 km) altitude extended 25 nautical miles from the volcano to the south.

Shishaldin (United States, Aleutian Islands): (15 May) The Alaska Volcano Observatory believed that the activity at the volcano has a bit increased. Satellite data show persistent high temperatures in the summit crater which could be lava flows, or even a small lava lake, likely produced by episodes of lava fountains.
The heat signals detected went along with increasing volcanic tremor detected.
There is no visual confirmation of such activity so far; webcam images only show a weak degassing plume, but these images are too distant to allow detailed interpretations. The aviation alert level remained at Orange.

Santa María / Santiaguito (Guatemala): (15 May) As expected, heavy rainfalls triggered a hot lahar (turbulent flow of mud, boulders and ash deposits mixed with water) that traveled down the Nima I river valley yesterday. The lahar carried lava blocks up to 2 m in diameter as well as many tree branches and trunks.
Abundant steam and sulfur gasses were released from the flowing masses. The lahar passed near the volcano observatory like a mix of "cement", where it let the ground vibrate, increased water content and speed as it reached the Samala river.
Similar rainfall could cause other lahars in the river San Isidro, the other important tributary of the Samala river. (INSIVUMEH)

San Miguel (El Salvador): (15 May) During the past 2 days, seismic activity at the volcano has shown a sharp increase after it had been gradually decreasing since late February.
The latest bulletins published by SNET suggest that the most likely expected eruption would be strombolian-type with associated lava flows, probably on the north side of the volcano.
... [read more]
Vorig nieuws
Tue, 13 May 2014, 21:00
Ash plume from an explosion at Sakurajima early on 10 May
Sakurajima (Kyushu, Japan): After a series of powerful explosions on 10 May, which produced ash plumes up to 18,000 ft (5.5 km) altitude, the volcano has been quieter again over the past days. ... Lees alle
Mon, 12 May 2014, 21:00
Strombolian activity at Etna's NSEC this evening seen from Catania
Etna (Sicily, Italy): (11 May) Near-continuous weak strombolian activity is visible from the New SE crater. Tremor is currently low. ... Lees alle
Sat, 10 May 2014, 21:00
Earthquakes under Cerro Negro de Mayasquer (IGPEN)
Cerro Negro de Mayasquer (Colombia): (10 May) The seismic crisis under the volcano continues. Thousands of small earthquakes, both volcano-tectonic (due to rock fracturing caused by magma pressure) and long-period (due to fluid movements) earthquakes continue to be registered. ... Lees alle
Fri, 9 May 2014, 21:00
Current infrared image of Reventador volcano showing the still active (white) / cooling (yellow) lava flows (IGPEN)
Reventador (Ecuador): (9 May) The activity of the volcano had increased during the past two weeks, producing several lava flows and some relatively strong explosions. At the moment, it has decreased again, but remains moderately high. Explosions have become less frequent and the lava flows are only weakly alimented. ... Lees alle
Tue, 6 May 2014, 21:00
Kilauea (Hawai'i): (6 May) Eruption activity remains high on Kilauea, both at the summit and east rift zone. The lava lake within Halemaumau crater at the summit of Kilauea has fluctuated around an estimated 35m (115ft) below the crater floor. The glow produced at night from this lava lake is as bright as ever! ... Lees alle

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