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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 : #Actualités volcaniques
Sabancaya - 25.07.2017 / 6h47 - plume of 4.200 meters - webcam OVI - Ingemmet

Sabancaya - 25.07.2017 / 6h47 - plume of 4.200 meters - webcam OVI - Ingemmet

An explosive eruption of the Sabancaya produced on July 24 at 8:25 am a plume of ashes up to 4,500 meters above the crater and then spread over 40 km in a south-southeast direction towards Huanca and Lluta.
On July 25, at 6:47, another explosion generated a plume of 4,200 meters
For the week of 17 to 23 July, the IGP reports an average of 24 explosions per day, higher than the previous week. The trend is towards deflation, and the flow of SO2 reaches a max. of 2,692 tonnes / day on 23.07.


Source: IG Peru

Poas - 21.07.2017 / 11h52 - webcam Ovsicori

Poas - 21.07.2017 / 11h52 - webcam Ovsicori

During the last 24 hours, the Poas seismicity is marked by volcanic tremor of very small amplitude and variable duration, and some VT earthquakes associated with the rupture of rocks or a collapse in the volcano.

The emission of white-blue plume (magmatic gases and aerosols) is continuous and persistent at Boca Roja; The Boca Azufreda,of lower temperature, emits water vapor, gases, and abundant yellow particles of native sulfur. The panache rises to the 300 meters above the bottom of the crater, and moves towards the southwest, affecting the National Park, Altura, Finca Inés, Cabuyal, Naranjo, San Ramon, Atenas, Esquipulas, Palmares, Cirrí, Grecia, Tacares, Ánimas, Alajuela, Guácima, San Pedro de Poás, Altura, Finca Inés, etc.

Turrialba - SO2 emissions and very fine particulate matter rejected on 24 July 2017 - Doc. Ovsicori

Turrialba - SO2 emissions and very fine particulate matter rejected on 24 July 2017 - Doc. Ovsicori

In Turrialba, seismicity is marked by volcanic tremor of moderate amplitude and variable duration, and low frequency earthquakes; This activity is related to the fluid movements in the ducts and cracks.

A passive emission of a blue-tinted plume of water vapor, gases and aerosols, rises to 200 meters in height affecting the areas of the National Park, San josé, Heredia and Alajuela.This July 24, the quantities of sulfur dioxide and (PM2.5), mainly emitted by Turrialba, did not exceed the maximum permissible average values


Source: Ovsicori

Copahue pictures - 23.07.2017 - Valecaviahue photos / Twitter
Copahue pictures - 23.07.2017 - Valecaviahue photos / Twitter

Copahue pictures - 23.07.2017 - Valecaviahue photos / Twitter

At Copahue, on the Argento-Chilean border, the volcano, in alerta amarilla, emits low plumes of water vapor and gas, sporadically loaded with a little ashes.

Piton of La Fournaise 24.07.2017 / 14h09 TU - webcam Piton of Bert / OVPF

Piton of La Fournaise 24.07.2017 / 14h09 TU - webcam Piton of Bert / OVPF

Piton de La Fournaise 25 .07.2017 - IRT / OVPF camera

Piton de La Fournaise 25 .07.2017 - IRT / OVPF camera

At Piton de La Fournaise, the intensity of the tremor remains relatively constant, but the tendency to deflation seems to stabilize or even reverse. According to the OVPF, this parameter will have to be followed over the next few days.


Source: OVPF
 

 Piton de La Fournaise - 25.07.2017 - Illustration of the top deformation over 2 months. Here is shown a baseline (variation of distance between two GPS receivers) crossing the Dolomieu crater. A rise is synonymous with elongation and therefore swelling of the volcano; Conversely, a decrease is synonymous with contraction and therefore with deflation of the volcano. The possible periods, colored in light pink, correspond to eruptions. - © OVPF / IPGP

Piton de La Fournaise - 25.07.2017 - Illustration of the top deformation over 2 months. Here is shown a baseline (variation of distance between two GPS receivers) crossing the Dolomieu crater. A rise is synonymous with elongation and therefore swelling of the volcano; Conversely, a decrease is synonymous with contraction and therefore with deflation of the volcano. The possible periods, colored in light pink, correspond to eruptions. - © OVPF / IPGP

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