Overblog
Editer l'article Suivre ce blog Administration + Créer mon blog

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
 Langila - craters 2 & 3 - photo Wally Johnson Austr. office of mineral resources / GVP

Langila - craters 2 & 3 - photo Wally Johnson Austr. office of mineral resources / GVP

The Langila presented on October 6, 2020, according to the VAAC Darwin, a discreet eruption, accompanied by emission of ash at flight altitude 100.

The aviation code is orange.

Thermal anomalies are reported by Mirova: VRP 2 MW, October 5; VRP 8 MW on October 7 at 12:15 p.m. and 1 MW the same day at 3:15 p.m.

 

This New Britain volcano, in Papua New Guinea, is according to the GVP, in eruption since August 1, 2020 / eruption in progress.

Langila consists of a group of four small, overlapping Badalto-andesitic composite cones on the lower eastern flank of the Taluwe volcano.The youngest crater (crater 3) was formed in 1960 and has a diameter of 150 meters

 

Sources: VAAC Darwin, Mirova & GVP

Langila - thermal anomalies 07.10.2020 - Doc. Mirova_MODIS_Latest10 - one click to enlarge
Langila - thermal anomalies 07.10.2020 - Doc. Mirova_MODIS_Latest10 - one click to enlarge

Langila - thermal anomalies 07.10.2020 - Doc. Mirova_MODIS_Latest10 - one click to enlarge

The INGV OE announced on October 7 an increase in explosive stombolian activity at the Etna NSEC, with the production of an ash cloud rising over 4.5 km towards the SEE; ashes fell on the Citelli refuge.

The tremor remained within the mid-range, and the infrasonic activity was characterized by low occurrence.

No significant changes in soil deformation measurements.

 

Sources: INGV OE, Boris Behncke, LAVE webcam

 Etna NSEC - 07.10.2020 / 18:28 - LAVE webcam

Etna NSEC - 07.10.2020 / 18:28 - LAVE webcam

Photos of the degassing plume in Telica / Nicaragua, reaching a height of 300 meters, should be interpreted as an interaction between precipitation and hot fumaroles emitted during sporadic explosions in connection with wall slides in the crater and the expulsion by gas, with a "more spectacular" visual effect.

 

Source: 100% Noticias

Piton de La Fournaise - Location map (epicenters) and north-south and east-west sections (showing the location in depth, hypocenters) of the earthquakes recorded and located by the OVPF-IPGP between 09/26/2020 and 07/07 / 10/2020 under the Piton de la Fournaise massif. Only localizable earthquakes have been shown on the map (© OVPF-IPGP). Alert level: Alert 1

Piton de La Fournaise - Location map (epicenters) and north-south and east-west sections (showing the location in depth, hypocenters) of the earthquakes recorded and located by the OVPF-IPGP between 09/26/2020 and 07/07 / 10/2020 under the Piton de la Fournaise massif. Only localizable earthquakes have been shown on the map (© OVPF-IPGP). Alert level: Alert 1

The seismic activity under the Piton de la Fournaise continues to decrease. Thus for the day of 07/10/2020, 3 volcano-tectonic earthquakes deep under the eastern flank, 2 long-period earthquakes, and 1 earthquake classified as "undetermined" (because of low magnitude) were manually pointed.

No shallow landslides / collapses were recorded in the eastern flank sector for the last 24 hours. 17 events of smaller amplitudes and not visible to operators were detected and relocated automatically.
During the day of 07/10/2020, no large-scale deformation occurred in the Grandes Pentes sector.


The inflation (swelling) of the summit zone continues testifying to the pressurization of a source under the summit, where the superficial supply system is located (magmatic reservoir from which the magma instrusions leave towards the surface) .

This resumption of inflation is consistent with the CO2 concentrations in the soil, which are still increasing in the far field (Plaine des Cafres sector) even if the rate remains moderate. This increase is often associated with a rise of magma from the mantle.
The compositions of the fumaroles at the top have returned to compositions usually observed "without crises", namely very low in CO2 and SO2.

 

Source: OVPF

Find all the information relating to the activity of Piton de la Fournaise on the various media of the OVPF-IPGP:
- the website (http://www.ipgp.fr/fr/ovpf/actualites-ovpf),
- the Twitter account (https://twitter.com/obsfournaise?lang=fr),
- and the facebook account (https://www.facebook.com/ObsVolcanoPitonFournaise/)

Commenter cet article

Articles récents

Hébergé par Overblog