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Earth of fire

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

Publié par Bernard Duyck
Publié dans : #Actualités volcaniques

Reventador volcano showed on March 25 from from 15h LT an increasing activity , accompanied by an emission of gas and ash rising to 1,500 m. before drifting to the west - southwest. Pyroclastic material fell into the caldera , the posterior remobilization of those who fell on the cone caused secondary pyroclastic flows , descending on 500 meters.

Reventador - photos thermal webcam 25.03.2014 - doc . IGEPN

Reventador - photos thermal webcam 25.03.2014 - doc . IGEPN

Reventador - 03/26/2014 - photo Hosteria el Reventador

Reventador - 03/26/2014 - photo Hosteria el Reventador

The activity continued on March 26 , marked by a tremor and continuous emissions. The thermal webcam recorded secondary pyroclastic flows , advancing 1500 m. maximum, related to continuous collapses of the dome, which was built in the crater since 2011 . In addition, two lava flows descend the flanks east and southeast of the cone, a few hundred meters.

Reventador - top of the active cone - photo Hosteria el Reventador 03/26/2014

Reventador - top of the active cone - photo Hosteria el Reventador 03/26/2014

  Reventador - overlay of a thermal image to another in the visible range : traces of pyroclastic flows and lava on the east side - doc . F.Velasquez / IGEPN

Reventador - overlay of a thermal image to another in the visible range : traces of pyroclastic flows and lava on the east side - doc . F.Velasquez / IGEPN

The most likely danger is a remobilization of ash and tephra by the rain and the formation of lahars down the ravines and rios ( rio Reventador, rio Montana and rio Marker) towards the Quijos river, and residential areas.

Topographic map Reventador - its iron horse and the active cone, and drainage - doc. IG

Topographic map Reventador - its iron horse and the active cone, and drainage - doc. IG

Source : rapports journaliers et spéciaux de l'IG - Instituto Geofisico.

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