Saturday, February 27, 2016

GLOBAL VOLCANISM: "The Throat Of Fire" - Ecuador's Tungurahua Volcano Erupts, Produces Ash Plume Over 16,000 Feet High; Prompts Orange Danger Level! [PHOTOS]

Twitter: J.L Espinosa-Naranjo

February 27, 2016 - ECUADOR
- Ecuador’s Volcano Tungurahua, which translates from Quichua as “Throat of Fire,” has been exploding and puffing out an impressing 8-kilometer-high black spout.

Impressive images of the enormous ash cloud have been posted online by the local admirers.

Instagram: rohocentro

Instagram: aalaneez

At least five explosions shook Tungurahua on Friday, the Geophysical Institute of National Polytechnic School reported.

The first of them threw a grey cloud of volcanic gases to 5 kilometers above the crater, rising up another 3 kilometers in the hours that followed.

Ash headed northwest, falling in towns of Chonglontus, El Manzano, Pillate and Juive.

Local authorities updated the danger level to orange on Friday, warning the population of possible eruption.Current Tungurahua’s emission is regarded by experts as “mild to moderate.” - RT.

Two moderately large explosions occurred at the volcano yesterday noon from 12:12 local time. The first and larger explosion produced an ash plume that rose approx. 5000 meters (16404.2 feet) above the summit.

The ash plume dispersed mainly to the west and northwest where ash fall occurred in areas including Choglontús, Pillate, Cahuaji and El Manzano.

Eruption plume of Tungurahua volcano yesterday.
Twitter: J
.L Espinosa-Naranjo / Ambalaser

Tungurahua volcano eruption in Ecuador on February 26, 2016.

According to IGEPN, the eruption - which came after a 3 months interval of quiet since last November - was most likely NOT the result of new magma, but instead of accumulated gas pressure in the upper conduit. Magmatic gasses (H2O, CO2 etc) still contained in older magma inside the conduit was being released quietly as the magma continued to cool and crystallize, but most of these gasses were being trapped beneath a solid plug. With time, the gas pressure increased to the critical point: the plug gave way in yesterday's explosions.

The explosion itself, a typical so-called "vulcanian"-type eruption, was preceded only by a short (lasting little more than an hour), but intense seismic swarm of shallow earthquakes caused by internal fluid movements and rock fracturing as pressurized gasses started to disintegrate the overlying plug. - Volcano Discovery.

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