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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
Nevado del Ruiz - 05/10/2016 - Where does the basal staining of the  ash plume - photo SGC Manizales

Nevado del Ruiz - 05/10/2016 - Where does the basal staining of the ash plume - photo SGC Manizales

The report of OV Manizales of 08.10 specifies that the red tones perceived on the images of the emission of ash from Nevado del Ruiz take 5 october are in fact optical effects of sunlight. An emission of ash indicates not an imminent eruption. The alert level remains Amarillo / behavior change in volcanic activity.


Nevado del Ruiz - emission of ash and light effects - photo RCN Radio / via Shérine France
Nevado del Ruiz - 05/10/2016 - photos taken with and without the effects of sunlight - doc. SGC Manizale

Nevado del Ruiz - emission of ash and light effects - photo RCN Radio / via Shérine France

Nevado del Ruiz - emission of ash and light effects - photo RCN Radio / via Shérine France

Nevado del Ruiz - 05/10/2016 - photos taken with and without the effects of sunlight - doc. SGC Manizales

Nevado del Ruiz - 05/10/2016 - photos taken with and without the effects of sunlight - doc. SGC Manizales

Note that on October 7, at 3:34 p.m. local, a volcano-tectonic earthquake, combined with the fracturing of rocks, was recorded at 4,400 m north of Arenas crater; it is of local magnitude 4.4 and hypocenter located at a depth of 5.4 km.

Source: SGC - Volcano Observatory in Manizales.

 

The lake and the volcano Karymsky - photod'archives Mikhail Zelensky

The lake and the volcano Karymsky - photod'archives Mikhail Zelensky

The KVERT changed twice in two days the alert level of aviation of Karymsky: yellow, October 7 at 11:16 p.m. GMT and orange, October 8 at 1:34 UT.
Based on satellite data of October 7, the volcano seems to have increased. A gas plume moderately loaded in ash extends for about 100 km to the SE of Karymsky.
Terra Modis Data of October 8 mention an ash plume drifting 78 km to the SE of the volcano, and a gas and steam plume containing the ashes of 388 km SE of the volcano.
It is not specified the origin for the observed plumes ... Consecutive of an eruption, or due to remobilization of previously deposed ashes ? To be continued.

Source: KVERT

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