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Earth of fire

Actualité volcanique, Article de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié le par Bernard Duyck
Publié dans : #Actualités volcaniques
 Asosan - eruption of 02.18.2016 - photo @ 39cd / Twitter

Asosan - eruption of 02.18.2016 - photo @ 39cd / Twitter

The Asosan, a volcano on the Japanese island of Kyushu, on alert level 2 since 11/24/2015, experienced an eruption this February 18 to 4:59 p.m. loc., accompanied by a light colored plume. It was reported by the Tokyo VAAC on the basis of information Himawari-8 satellite, at 8:05 UTC.

The caldera of Asosan home to 17 cones, whose main activity is located in the last century at Nakadake crater. Historical eruptions of Aso consist of emission of ash, interspersed periodically with strombolian or phreatomagmatic activity (GVP)

Location of the Aso volcano and its various cones - Doc. GVP - a click to enlarge.Location of the Aso volcano and its various cones - Doc. GVP - a click to enlarge.

Location of the Aso volcano and its various cones - Doc. GVP - a click to enlarge.

Wellington VAAC reported an ash plume that 18.2.2016 issued by the volcano of Ambrym in Vanuatu. It reaches a height of 2,700 meters before drifting eastward.

This observation suggests an explosive activity at one of its active vents, presumably Marum and Benbow, each containing an active lava lake. This kind of activity has been reported in recent months, without other changes of activity.

Source: VAA VolcanoDiscovery & C Wellington

Ambrym - thermal anomaly  02.18.2016 / 11:05 - MODIS logVRP / Mirova and ash advisory - Doc. VAAC Wellington
Ambrym - thermal anomaly  02.18.2016 / 11:05 - MODIS logVRP / Mirova and ash advisory - Doc. VAAC Wellington

Ambrym - thermal anomaly 02.18.2016 / 11:05 - MODIS logVRP / Mirova and ash advisory - Doc. VAAC Wellington

In Nicaragua, one explosions follow another at Momotombo, respectively to 9:21 ET 11:08 local time. According A.Moreira, a specialist nearby, ashes and rocks expelled are mounted to 400 meters and incandescent materials have fallen at the foot of the volcano, and have developed small forest fires. The eruptive activity is unpredictable and he advises not to approach the Momotombo.

Sources: Webcams Ineter & Red Sismologica of Nicaragua

 

Momotombo - 02.18.2016 / sequence between 9:20 ET 9:22 - webcam Ineter seismic station El CardonMomotombo - 02.18.2016 / sequence between 9:20 ET 9:22 - webcam Ineter seismic station El Cardon
Momotombo - 02.18.2016 / sequence between 9:20 ET 9:22 - webcam Ineter seismic station El Cardon

Momotombo - 02.18.2016 / sequence between 9:20 ET 9:22 - webcam Ineter seismic station El Cardon

For the beauty of the images, a video of Zach Voss, with the support of the Boise State University / NSF, filmed during an Interuniversity expedition to Santiaguito in eruption.

The INSIVUMEH reports that over the past 24 hours, the dome maintains a low white outgassing, with some explosions producing plumes rising to 3,200 meters asl. before moving eastward. Ash fallout are possible in Quetzaltenango, San Marcos Palajunoj and Santa Maria de Jesus.

Sources: INSIVUMEH & Conred

 

Having full screen on Vimeo: https://vimeo.com/153729122

News from the Sinabung :  growth (and the collapse that follows) of the summit lava dome and pyroclastic flow of the day.

Sinabung - the summit dome /  lobe - photo Beidar Sinabung 02/18/2016

Sinabung - the summit dome / lobe - photo Beidar Sinabung 02/18/2016

 Sinabung - plume  18.02.2016 / 11:25 WIB - photo PVMBG

Sinabung - plume 18.02.2016 / 11:25 WIB - photo PVMBG

Sinabung - 18.02.2016 /  11:03 p.m. - photo endrolewa

Sinabung - 18.02.2016 / 11:03 p.m. - photo endrolewa

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