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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
Cotopaxi - emission of ash on August 18 in the afternoon - photo Jose Luis Espinosa-Naranjo

Cotopaxi - emission of ash on August 18 in the afternoon - photo Jose Luis Espinosa-Naranjo

An overview of Cotopaxi by scientists of IGEPN on board an aircraft of the Air Force Ecuadorian on August 18 showed continued emissions of low energy of ash and steam, which are diluted on the west side the volcano, without reaching a significant altitude.

No lahar, or pyroclastic flow are identified; some of the summital glaciers are covered with gray ash.

Pictures taken on August 18 by our friend José Luis Espinosa-Naranjo show the glaciers of southern flank of Cotopaxi covered with ashes

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Cotopaxi control overview 08/18/2015 - photo via César Navas / Twitter

Cotopaxi control overview 08/18/2015 - photo via César Navas / Twitter

Cotopaxi - 08.18.2015 / 15h30 - take from Vaquería Ticatilín. SW of the volcano - photo Jose Luis Espinosa-Naranjo

Cotopaxi - 08.18.2015 / 15h30 - take from Vaquería Ticatilín. SW of the volcano - photo Jose Luis Espinosa-Naranjo

Cotopaxi - 08.18.2015 / 17h00 - take from Vaquería Ticatilín. SW of the volcano - photo Jose Luis Espinosa-Naranjo

Cotopaxi - 08.18.2015 / 17h00 - take from Vaquería Ticatilín. SW of the volcano - photo Jose Luis Espinosa-Naranjo

Tungurahua has also increased its activity. The IGEPN indicates the issue of tremor accompanying ash production, with an impact on Manzano, and Choglontus Chontapamba. They lasted about three hours on Saturday.

During the weekend, five small explosions were recorded, and 104 LP type earthquakes, and various episodes of tremor.

 

Tungurahua between April 30 and August 17, 2015 - Above : Flux of sulfur dioxide - below: Seismicity during the same period (tremor episodes in blue - LP earthquakes in green)

Tungurahua between April 30 and August 17, 2015 - Above : Flux of sulfur dioxide - below: Seismicity during the same period (tremor episodes in blue - LP earthquakes in green)

Sources:

- IGEPN daily reports

- Photos by José Luis Espinosa-Naranjo

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