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, #Volcanoes and climate
Merapi - 14.07.2022 / 7:08 p.m. - PVMBG webcam, Magma Indonesia - one click to enlarge

Merapi - 14.07.2022 / 7:08 p.m. - PVMBG webcam, Magma Indonesia - one click to enlarge

At Merapi, on Java, the gas plume from the main crater, white, is observed with high intensity, about 50-75 meters from the summit.

The seismicity of July 14 is characterized by:

- 82 avalanche earthquakes, with an amplitude of 3-24 mm and an earthquake duration of 25.9-160.2 seconds.
- 5 emission earthquakes, with an amplitude of 3-4 mm and the duration of the earthquake from 21.8 to 42.8 seconds.
- 9 hybrid/multiphase earthquakes, with an amplitude of 3-11 mm, S-P 0.3-0.8 seconds and an earthquake duration of 7.3-13.5 seconds.
- 4 shallow volcanic earthquakes
- 2 distant tectonic earthquakes.

 

The activity level remains at 3 / siaga. Current potential hazards are lava avalanches and hot clouds in the south-southwest sector covering Boyong River for up to 5 km, Bedog River, Krasak, Bebeng for up to 7 km. The southeastern sector covers the Woro River for a maximum of 3 km and the Gendol River for 5 km. Meanwhile, the ejection of volcanic material in the event of an explosive eruption can reach a radius of 3 km from the summit.

 

Sources: PVMBG, Magma Indonesia

Bulusan - activity report 14.07.2022 - Doc. Phivolcs

Bulusan - activity report 14.07.2022 - Doc. Phivolcs

In Bulusan, in the Philippine archipelago, from 13.07 / 5 a.m. to 14.07 / 5 a.m., 61 volcanic earthquakes were recorded.

From July 14 / 5 a.m. to July 15 / 5 a.m., Phivolcs reports 11 volcanic earthquakes.

SO2 emissions were measured on July 13 at 499 tonnes/day

Small emissions are observed, reaching 300 m. on the 14th and inflation continues to mark the volcano.

The alert level remains at 1.

 

Source: Phivolcs

Cumbre Vieja / Tajogaite - rotary drilling with core extraction carried out by the IINCO Laboratory in the lava field - photo 13.07.2022

Cumbre Vieja / Tajogaite - rotary drilling with core extraction carried out by the IINCO Laboratory in the lava field - photo 13.07.2022

This Wednesday, July 13, 2022, the Volcanological Institute of the Canary Islands (INVOLCAN) began prospecting work in the new lava field generated by the eruption of Cumbre Vieja / Tajogaite (on La Palma, Canary Islands), by rotary drilling with carrot extraction carried out by the IINCO Laboratory.

This work will make it possible to carry out a study on the thermo-mechanical behavior of lava flows and to develop a cooling model for them based on direct observation.


This is the first time that this experience has been carried out in Spain and for this it benefits from the valuable collaboration of the Infrastructure Department of the Cabildo Insular de La Palma. These works are included in the project of Territorial Recovery of La Palma after the eruptive process of 2021, promoted and financed by the Ministry of Ecological Transition, the Fight against Climate Change and Spatial Planning of the Government of the Canary Islands .

 

Source : InVolcan

Subglacial volcanoes covered by the Vatnajökull ice cap - doc. IMO

Subglacial volcanoes covered by the Vatnajökull ice cap - doc. IMO

Vatnajökull - the different glaciers making up the largest Icelandic glacial ensemble - Doc. vatnajokulsthjodgardur.is

Vatnajökull - the different glaciers making up the largest Icelandic glacial ensemble - Doc. vatnajokulsthjodgardur.is

Iceland's glaciers have lost a total of 250 km³ of ice since 1995, or about 8% of their total volume, largely as a result of global warming.

Of the glaciers measured by volunteers from the Icelandic Glaciological Society, Skeiðarárjökull retreated the most last year, by around 400 metres.

The Breiðamerkurjökull has retreated in many places around and more than 150 meters where it velle the "icebergs" in the Jökulsárlón., as reported in a recent bulletin of the "Falling glaciers" project.

The relationships between glacial melting, reflex soil inflation and possible increase in volcanic activity have been discussed elsewhere.

The Höfandi jöklar (Höfandi glaciers) project is a collaborative project of the Icelandic Meteorological Office and Vatnajökull National Park, funded by the Ministry of Environment, Energy and Climate, and worked in conjunction with the Glacier Group at the University of Iceland's Institute of Earth Sciences and the Natural History Museum of Southeast Iceland.

After Ice is a documentary made by researchers at the University of Iceland Research Center at Höfn in Hornafjörður and the University of Dundee in Scotland. The film uses the latest technology to shed light on the great impact global warming has had on the melting of Iceland's glaciers.

 

Source: video "After Ice" / vimeo to see on https://www.vatnajokulsthjodgardur.is/

Commenter cet article

Archives

Articles récents

Hébergé par Overblog