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Earth of fire

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

volcanic activity

Publié le par Bernard Duyck
Publié dans : #volcanic activity

The eruptive episode, began in the new southeast crater of Etna on the evening of January 21, 2014, continues today.

The volcano seems to have stabilized and this activity, termed as " persistent ", results in a low NSEC strombolian activity and lava flows out of a mouth located at the lower base of the cone inside the scar of the landslide occurred Feb. 11, 2014 . This landslide caused a dangerous pyroclastic flow ... which justified a ban on entering the valley.

Etna - 11.02.2014 - collapse pyroclastic flow - photo Casa di paglia Felcerossa Permacultura sull'Etna

Etna - 11.02.2014 - collapse pyroclastic flow - photo Casa di paglia Felcerossa Permacultura sull'Etna

Sequence showing the development of the pyroclastic flow of 11.02.2014 - Thermal INGV webcam

Sequence showing the development of the pyroclastic flow of 11.02.2014 - Thermal INGV webcam

Feeding cast remains variable and remain confined to the western part of the Valle del Bove, without creating problems . These days, the flow were expanded in the upper part of the west wall in overlapping .

Regarding the instability of the western slope of the new cone southeast , it has been recently observed some small rusty ash emissions  and a small thermal anomaly related to minor accidents in the area of ​​the effusive mouth.

The average amplitude of the volcanic tremor showed no significant changes , but the observations are disrupted by cloud cover.

 Etna curve of the tremor 03.02.2014 / at 16h19 - doc . INGV Catania

Etna curve of the tremor 03.02.2014 / at 16h19 - doc . INGV Catania

 Etna 25/02/2014 - photo Turi Caggegi / iEtna

Etna 25/02/2014 - photo Turi Caggegi / iEtna

Etna 01/03/2014 - Clouds in the Valle del Bove - photo Turi Caggegi / iEtna

Etna 01/03/2014 - Clouds in the Valle del Bove - photo Turi Caggegi / iEtna

Sources :

- INGV Catania - link

- iEtna - link

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Publié le par Bernard Duyck
Publié dans : #volcanic activity
Popocatépetl - aerial survey of 26.02.2014 - by Cenapred / Navy

Popocatépetl - aerial survey of 26.02.2014 - by Cenapred / Navy

February 26, 2014, an overview of Popocatépetl by CENAPRED / Mexico teams,  with the support of the Navy, has a visual inspection of the crater. The domenumber 48 was destroyed , leaving a funnel-shaped cavity 80 meters deep ... at the bottom of it, a new dome is installed, with a current diameter of 20 to 30 meters.
Over the past 24 hours, the monitoring system of Popocatépetl recorded 544  "exhalaciones", low to medium intensity. The activity increased from 2:30.
On 25.02 at 7:36 p.m.and  26.02 to 4:58, two volcano-tectonic earthquakes were collected, respectively, 2.6 and 1.6 magnitude.
During periods of better visibility, a plume of gas and steam escaped from the crater before drifting east / southeast.
The volcano alert level remains at 2 / amarillo.

Popocatépetl - 25.02.2014 - plume of gaz & steam - webcam Cenapred / Tlamacas

Popocatépetl - 25.02.2014 - plume of gaz & steam - webcam Cenapred / Tlamacas

Source : Cenapred

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Publié le par Bernard Duyck
Publié dans : #volcanic activity

In the absence of significant changes in the ongoing eruptions , some news from Kilauea.


The eruption continues at Pu'u O'o without major changes: the spatter cones on the crater floor display persistent glow and a small possible lava pound, now under a crust, inside the spatter cone northeast collapsed.  The spatter cone south emits lava on the crater floor from 6am on 22.02 , consistent with a small deflation marked by tilmeter .

Kilauea : situation of Pu'u O'o and Kahauale'a 2 flow.
Kilauea - activity to the spatter cone NE of Pu'u O'o - photos HVO / USGS.

Kilauea - activity to the spatter cone NE of Pu'u O'o - photos HVO / USGS.

The Kahauale'a 2 lava flow is always fed by the north spatter cones complex . Many outbreaks and forest fires are seen.

This flow has reached 7,800 meters northeast of Pu'u O'o since mid -January. The lava flow has fluctuated in recent months, in connection with a deflation, and an abrupt power drop, or an inflation and a recovery of the flow's force. Thus the front of the casting has increased by only about 500 meters since November 2013.

Vieuw of the Kahauale'a 2 flow front with smoke at the forest fires caused . You can see the Mauna Loa in the background - Photo HVO / USGS / 02/20/2014

Vieuw of the Kahauale'a 2 flow front with smoke at the forest fires caused . You can see the Mauna Loa in the background - Photo HVO / USGS / 02/20/2014

Kahauale'a 2 flow on 20.02.2014 -  HVO / USGS map

Kahauale'a 2 flow on 20.02.2014 - HVO / USGS map

Source : Hawaiian Volcano Observatory / USGS - link

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