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Earth of fire

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

Publié le par Bernard Duyck
Publié dans : #volcanic activity
Sabancaya - 29.11.2019 / 17:51 - Ingemmet / OVI thermic camera

Sabancaya - 29.11.2019 / 17:51 - Ingemmet / OVI thermic camera

Due to the explosions of the Sabancaya volcano, abundant ash falls are recorded in the cities of the Colca Valley, in the province of Caylloma, in the region of Arequipa, Ingemmet announced today.

The Sabancaya records eruptions with dome growth and moderate explosions with bombs (rock fragments over 6.4 centimeters) falling near the crater.

In the last 24 hours, Sabancaya had 15 explosions with a maximum height of 2,700 meters above the crater (12:28), said the Vulcanological Observatory of Ingemmet (OVI). In the afternoon, Sabancaya continued with explosions and emitting ashes.

 

Source: Ingemmet / OVI

Sabancaya - activity report # 30 of the Ingemmet of 29.11. 2019 / 9h

Sabancaya - activity report # 30 of the Ingemmet of 29.11. 2019 / 9h

The episodic eruption of the Shishaldin volcano continues. The seismic levels were variable during the week, with high activity at the beginning of the week and during the last 36 hours. Satellite image analysis indicates that a partial collapse of the summit cone occurred early on November 25th. This resulted in a pyroclastic flow extending up to 3 km from the summit, on the northwestern side of the volcano. A new lava flow was also generated during this period of activity that extended for 1 km along the northwest flank of the volcano.

Shishaldin RSAM 29-30.11.2019 - Doc. AVO


The seismicity was high, but variable in the middle of the week and increased again during the night, accompanied by very high surface temperatures suggesting a new lava effusion. Persistent Clouds Darken Observations of Eruptive Activity in Web Cameras

The Mirova site informs for November 29 thermal anomalies of 22 and 39 MW.

Shishaldin is monitored by local seismic and infrasound sensors, satellite data, web cameras, a geodetic and tilt telemetric network, and remote infrasound and lightning networks.

The alert level is Watch and the aviation code remains orange.

The Shishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetrical cone with a base diameter of about 16 km (10 mi).

 

Sources: AVO, Mirova and Sentinel 2

 Shishaldin - image Sentinel-2 / 3D natur. Swir from 26.11.2019 - Copernicus

 Shishaldin - image Sentinel-2 / 3D natur. Swir from 26.11.2019 - Copernicus

The activity of Aso and Sakurajima continues on Kyushu.

At the Aso, ash emissions continue and are the subject of an opinion from VAAC Tokyo: dispersion to the east, then NNE.

On the 30th at 11:59, an eruption occurred at Sakurajima (crater at the top of Minamidake) and the volcanic plume rose to 2,300 m above the edge of the crater.

Volcanic ash disperses west towards Kagoshima City.

 

Sources: JMA AND VAAC Tokyo

Asosan - Ash Advisory Volcanoes - Doc. VAAC Tokyo 20.11.2019

Asosan - Ash Advisory Volcanoes - Doc. VAAC Tokyo 20.11.2019

Sakurajima - activity of 30.11.2019, respectively at 12h and 12h06 local - webcam JMA
Sakurajima - activity of 30.11.2019, respectively at 12h and 12h06 local - webcam JMA

Sakurajima - activity of 30.11.2019, respectively at 12h and 12h06 local - webcam JMA

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