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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
Popocatépetl - explosion and panache of 27.01.2020 / 11:20 p.m. - WebcamsdeMexico / Cenapred

Popocatépetl - explosion and panache of 27.01.2020 / 11:20 p.m. - WebcamsdeMexico / Cenapred

At Popocatépetl, 78 exhalations have been identified in the past 24 hours, in addition to two explosions recorded on January 27 at 11:18 p.m. (reported yesterday) and 11:55 p.m. of moderate and minor magnitude respectively.

Popocatépetl - incandescence 25.01.2020 / 19h17 - Webc. from Mexico

The first had an eruptive column about 1 kilometer high and ejected incandescent fragments on the northeast slope at a distance of 500 meters.
This activity corresponds to a (partial) destruction of the dome set up around January 25 (nocturnal glow observed)

In addition, there was a volcano-tectonic earthquake at 5:06 am on January 28 with a preliminary magnitude of 1.8 and 563 minutes of tremor.

Popocatépetl - activity of the volcano in parallel with the seismic activity of the moment on 28-29.01.2020. (According to the colors of the frames) - Doc. CENAPRED

Popocatépetl - activity of the volcano in parallel with the seismic activity of the moment on 28-29.01.2020. (According to the colors of the frames) - Doc. CENAPRED

Popocatépetl - gas and steam emissions on 28.01.2020 / 12.15 p.m. - Doc. WebcamsofMexico / SkyAlert

Popocatépetl - gas and steam emissions on 28.01.2020 / 12.15 p.m. - Doc. WebcamsofMexico / SkyAlert

Continuous ash emissions from Popocatépetl heading towards Puebla. Dispersion forecast: observed (area in red) and prognosis at 6 hours (area in yellow). - Doc. VAAC-NOAA. / Skyalert

Continuous ash emissions from Popocatépetl heading towards Puebla. Dispersion forecast: observed (area in red) and prognosis at 6 hours (area in yellow). - Doc. VAAC-NOAA. / Skyalert

Emissions of steam, volcanic gases and a low ash content were observed, which the wind preferentially disperses towards the east-northeast.

Sources: Cenapred; webcamsdeMexico

Rincon de La Vieja - photo 27.01.2020 Comisión Nacional de Emergencias

Rincon de La Vieja - photo 27.01.2020 Comisión Nacional de Emergencias

The Ovsicori reported that since Monday, the Rincon de La Vieja volcano has shown an increase in seismic activity, associated with the movement of hydrothermal fluids inside. So far, there are no movements of magma inside the massif that could generate an eruption.

Poas - 28.01.2020 / 7h56 - Ovsicori webcam

Poas - 28.01.2020 / 7h56 - Ovsicori webcam

In Poas, fumaroles surmount the acid lake which remains well filled in this season.

The sulfur dioxide concentration on January 26 is max. 24 ppm, down on January 27 with less than 0.4 ppm measured at the ExpoGas station.

Seismic activity remains stable

 

Sources: Ovsicori

Reykjanes peninsula - location and magnitude of earthquakes at 29.01.2020 / 8:40 am - Doc. IMO
Reykjanes peninsula - location and magnitude of earthquakes at 29.01.2020 / 8:40 am - Doc. IMO

Reykjanes peninsula - location and magnitude of earthquakes at 29.01.2020 / 8:40 am - Doc. IMO

3D animation of the earthquakes under Grindavik / Iceland of the last 60 days. The colors represent seniority, red is recent and blue is older. Bæring Gunnar Steinþórsson

Þorbjarnarfell - photo Kristinn Magnusson 28.01.2020

Þorbjarnarfell - photo Kristinn Magnusson 28.01.2020

Prepare for the worst to be ready in case of a rash:

A meeting was held in Grindavik to inform residents of emergency plans in the event of a volcanic eruption, reports mbl.is. Even if this scenario is not considered the most likely, according to scientists, residents must be prepared for the worst.

Grindavik - population meeting on 28.01.2020 - via Iceland Review


The meeting took place this January 28 in the presence of a thousand people; all participants received an SMS on their mobile phone from the emergency line while the emergency system was being tested.

In the unlikely event that Grindavík houses are to be evacuated, rescue centers will be opened at the Kórinn Sports Center in Kopavogur, the Reykjaneshöll Sports Center in Reykjanesbær and the Þorlákshöfn Sports Center.

Southern police chief Ólafur Helgi Kjartansson advised residents to think about what they should bring in case they have to leave their homes. He was satisfied with the quality of the meeting and encouraged residents to listen carefully to the information provided by the scientists who spoke.

 

Sources: mbls, is, RUV, is, Iceland Review

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