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Earth of fire

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

Publié par Bernard Duyck
Publié dans : #Actualités volcaniques
Holuhraun - the lava lake bubbling strongly - photo Mylifeasahelicopterpilot 13/11/2014

Holuhraun - the lava lake bubbling strongly - photo Mylifeasahelicopterpilot 13/11/2014

 Holuhraun - the lava lake within its walls - photo Jón Örn Guðbjartsson

Holuhraun - the lava lake within its walls - photo Jón Örn Guðbjartsson

In Bárðarbunga, the seismic activity of high intensity decreases overall.

After an earthquake of 5.4 M marking the southern edge of the volcano on November 15th at 11:25, followed by two M 4.1 and 4.5, the activity has decreased significantly ... to increase at the north end of intrusion. This transfer of location has been previously observed :the seismicity has increased for a few hours after large earthquakes at the caldera.

On 16 November, an earthquake of M 5.3 is reported in the same place as the day before, another of M 4.8, and 7 of magnitude greater than 4 ..

On 17, the seismic activity is considered stable.

A total of 160 earthquakes was reached between 14 and 17 November at Bárðarbunga.

  Caldera subsidence continues, in conjunction with large amounts of lava emission.

Seismicity in the area of the Vatnajökull 11.17.2014 / 19h30 - Doc. IMO
Seismicity in the area of the Vatnajökull 11.17.2014 / 19h30 - Doc. IMO

Seismicity in the area of the Vatnajökull 11.17.2014 / 19h30 - Doc. IMO

At the crack, the lava lake of Holuhraun contained in its cinders' ramparts, continues to bubble up under an important contribution, and feedsthe lava flow. On 17/11/2014, the lava field reached a area of 72 km², after three months of eruption. The volume of lava extruded exceeds the kilometer cube.

Pollution by sulfur dioxide continues ... higher rates of SO2 than normal were recorded in various locations, depending on the wind direction.

The dyke and eruptive site was home to about 50 earthquakes, every of a magnitude less than 1.6.

Is a great video to watch on the site RUV:
http://www.ruv.is/frett/holuhraun-eruption-fresh-video

The lava field of Holuhraun - top card: 11.14.2014 / IMO - image below: 11.16.2014 / NASA Landsat 8 / NASA-USGS
The lava field of Holuhraun - top card: 11.14.2014 / IMO - image below: 11.16.2014 / NASA Landsat 8 / NASA-USGS

The lava field of Holuhraun - top card: 11.14.2014 / IMO - image below: 11.16.2014 / NASA Landsat 8 / NASA-USGS

Sources :

- Rapports du IMO - link

- Vidéo de RUV -  link

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