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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 : #volcanic activity

A new change in eruptive behavior is reported to the Fuego this March 15 from 19:24, with an increase in degassing accompanying the lava flow, well observable at night on about 600 meters long in the Trinanca barranca.

An increase in avalanches is reported in Las Lajas, Trinidad and Cenizas barrancas.

Effusive activity is accompanied by weak explosions.

The seismic activity presents a continuous signal of low amplitude in relation to the expulsion of the materials feeding the lava flow and its degassing.

 

Sources: Gobierno de Guatemala & Insivumeh

Fuego - thermal anomalies on 16.03.2020 / 04h40 - Doc Mirova
Fuego - thermal anomalies on 16.03.2020 / 04h40 - Doc Mirova

Fuego - thermal anomalies on 16.03.2020 / 04h40 - Doc Mirova

This Fuego (Guatemala) Timelapse (15/03/2020) video was created by https://volcanoyt.com/camera/246 Source: Crelosavideos

In Costa Rica, the Ovsicori reports an eruption (probably of phreatic type) this March 14 at Rincon de La Vieja. It was accompanied by a strong tremor between 6:45 p.m. and 8:30 p.m. local. The height of the plume could not be estimated.

The neighbors indicate that the Quebrada Azufrada shows the presence in a small quantity of volcanic matter, transported by its waters.

 

Source: Ovsicori

Rincon de La Vieja - the active crater lake - image archives by Dr. Paulo Ruiz (Red Sismológica Nacional) & Dr. Cyrill Muller 02.2020 (OVSICORI).

Rincon de La Vieja - the active crater lake - image archives by Dr. Paulo Ruiz (Red Sismológica Nacional) & Dr. Cyrill Muller 02.2020 (OVSICORI).

The seismicity of Semisopochnoi, in the Aleutian arc, has increased in recent days, characterized by almost continuous tremor and frequent signals of small explosions.

The AVO consequently raised the volcanic alert to Watch on March 15 and the aviation code to orange.

No significant ash emission was detected by the satellites. The Semisopochnoi is monitored with a seismic network on the island and remotely by satellite and lightning sensors. An infrasound network on the island of Adak could detect the explosive emissions of Semisopochnoi with a delay of 13 minutes if the weather conditions allow it.

 

Source: AVO

Semisopochnoi - photo R.Clifford / AVO

Semisopochnoi - photo R.Clifford / AVO

On March 14, starting at 6:30 am local time, the monitoring stations of the Puyehue-Cordon Caulle volcanic complex recorded a swarm of 185 volcano-tectonic earthquakes, associated with rock fracturing, at 1,600 meters NNW from the emission center of 2011; the most energetic earthquake was Ml 2.2 at a depth of 4.3 km.

No surface activity has been described by the Sernageomin and the technical alert level remains green.

 

Source: Sernageomin

The Puyehue-Cordon Caulle complex on 22.10.2011 - photo ALI data from the EO-1 Team

The Puyehue-Cordon Caulle complex on 22.10.2011 - photo ALI data from the EO-1 Team

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