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Earth of fire

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

Publié par Bernard Duyck
Publié dans : #Actualités volcaniques

Contact resumption in photos and news briefs on the volcanic events, after several days of absence due to eclipse.

In Chile, the Villarica, in orange alert with 5 km restriction zone, present since a few days a Strombolian activity accompanied by ballistic projectiles out crater. In the photos of the thermal camera, night glow at the top is permanent, foreshadowing the return of the lava lake. The tremor associated with fluid dynamics inside the volcano is reported by the SERNAGEOMIN

Sources: SERNAGEOMIN - OVDAS & Povi
 

Villarica - 03/25/2015 - Thermal camera shows the summit thermal anomaly - doc.Sernageomin / Twitter
Villarica - 03/25/2015 - Thermal camera shows the summit thermal anomaly - doc.Sernageomin / Twitter

Villarica - 03/25/2015 - Thermal camera shows the summit thermal anomaly - doc.Sernageomin / Twitter

Villarica - increasing of the strombolian activity between 22 and 25 March 2015 - Doc. Povi

Villarica - increasing of the strombolian activity between 22 and 25 March 2015 - Doc. Povi

Villarica - map of risk areas updated in the prevailing winds - Doc. SERNAGEOMIN

Villarica - map of risk areas updated in the prevailing winds - Doc. SERNAGEOMIN

In Mexico, Colima continues to produce explosions "vulcanian" type. On 24 March, an eruption took place at 3:08 local, accompanied by fontaining of several hundred meters and a small pyroclastic flow.

A survey by the scientists in charge of the volcano at the University of Colima Wednesday revealed that the crater has taken an oval shape with a diameter ranging from 170 to 190 meters and a depth exceeding 30 meters.

 

 Colima - 2015.03.24 / 3:15 loc. - Photo Hernando Rivera / Twitter

Colima - 2015.03.24 / 3:15 loc. - Photo Hernando Rivera / Twitter

Colima - left, lenticular cloud on March 25, 2015 / 6:58 - right, explosion on March 26 at 11:26 - a click to enlarge - photos webcamsdemexicoColima - left, lenticular cloud on March 25, 2015 / 6:58 - right, explosion on March 26 at 11:26 - a click to enlarge - photos webcamsdemexico

Colima - left, lenticular cloud on March 25, 2015 / 6:58 - right, explosion on March 26 at 11:26 - a click to enlarge - photos webcamsdemexico

Colima - the crater during an inspection by the University of Colima on 25.03.15 / Carlos Navarro Ochoa

Colima - the crater during an inspection by the University of Colima on 25.03.15 / Carlos Navarro Ochoa

In Kamchatka, the Shiveluch has introduced this March 26 to 10am local an explosion accompanied by an ash plume that rose to 10 km. asl. before spreading to the south, and a pyroclastic flow of about 1,000 meters in length, causing snow melt.

The Zhupanovsky presented on March 25 an emission of ash and a plume amounting to 8,000 m. before spreading eastward, spotted by VAAC Tokyo.

The Karymsky in ongoing activity, knows intermittent Strombolian explosions, which are accompanied by small plumes, enough to be spotted by the services of VAAC Tokyo.

Sources: KVERT & Volkstat

Shiveluch - eruption 26/03/2015 - photo Y.Demyanchuk / Volkstat.ru

Shiveluch - eruption 26/03/2015 - photo Y.Demyanchuk / Volkstat.ru

In the Aleutian arc, the Semisopochnoi saw its seismic activity increased in recent days, and a  change of the alert codes : yellow aviation code, volcanic alert "Advisory".

Brief periods of tremor were added, indicating magma and/or gas movement. Last activity date of April 1987.

Sources: VONA & AVO

 

The summits of Semisopochnoi - Doc. NASA EO

The summits of Semisopochnoi - Doc. NASA EO

Semisopochnoi Location in the Aleutian volcanic arc / Alaska - Doc. AVO / Janet Schaefer

Semisopochnoi Location in the Aleutian volcanic arc / Alaska - Doc. AVO / Janet Schaefer

On Sumatra, the new (recent) dome of Sinabung is always bigger and threat of collapse. The few new from VSI on this activity are fortunately compensated by photographers on site.
 

The new dome Sinabung March 24, 2015 / 10:02 - photo endrolew @

The new dome Sinabung March 24, 2015 / 10:02 - photo endrolew @

Sinabung: the steaming and precariously dome, March 25, 2015 / 6:37 p.m. - photo endrolew @

Sinabung: the steaming and precariously dome, March 25, 2015 / 6:37 p.m. - photo endrolew @

Sinabung:  Incandescent rockfalls 26.03.2015 / 18h02 loc - photo endrolew @

Sinabung: Incandescent rockfalls 26.03.2015 / 18h02 loc - photo endrolew @

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