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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
 Kilauea East rift zone - aligned cones degassing, in Leilani Estates- photo Extreme Exposure 20.11.2018

Kilauea East rift zone - aligned cones degassing, in Leilani Estates- photo Extreme Exposure 20.11.2018

In Kilauea, no more active lava observations since September 4th ... on the basis of the dritères of the Global Volcanism Program, the eruption on the Lower East Rift Zone can be considered to be over.

Kilauea remains an active volcano, and geophysical data continues to show movements in the magmatic system, including a recharge of the East Rift Zone.

The danger remains, the area under effective control, and the closing of the lava field and vents, and its prohibition of access, remain in force, except with the express authorization of the Civil Defense.

For now, the volcanic alert level is Adisory and the yellow aviation code.

 

Source: HVO

Kilauea East rift zone - measurement of gas emissions by a drone near the cone on fissure 21 - Doc. USGS

Kilauea East rift zone - measurement of gas emissions by a drone near the cone on fissure 21 - Doc. USGS

At Etna, a Strombolian activity coupled with the emission of a small lava flow by the NSEC "puttusiddu" continues modestly; a small cone has formed inside the mouth.

Sources: Boris Behncke, Salvo Virzi and Gio Giusa

Etna - Strombolian activity of the NSEC puttusiddu 03.12.2018 - photo Salvo Virzi

Etna - Strombolian activity of the NSEC puttusiddu 03.12.2018 - photo Salvo Virzi

Etna - the intracratic cone on the NSEC flank and the lava flow 04.12.2018 - photo Gio Giusa

Etna - the intracratic cone on the NSEC flank and the lava flow 04.12.2018 - photo Gio Giusa

Etna - the intracratic cone on the NSEC flank and the lava flow 05.12.2018 - photo Gio Giusa

Etna - the intracratic cone on the NSEC flank and the lava flow 05.12.2018 - photo Gio Giusa

The dome of Merapi, in continuous growth, presents on the images of Planet Labs of December 1 an intriguing vent or a collapse structure under its perimeter.

These images were not commented by the PVMBG, which informs a seismicity characterized this December 4 by 50 earthquakes of eruption, one earthquake of emission, 5 earthquakes of low frequency, 8 hybrid earthquakes, a shallow volcanic earthquake and 2 distant tectonic earthquakes. The dome is surmounted by a white degassing at 50 meters above the summit.

 

Sources: PVMBG & Planet Labs / via Simon Carn

Merapi - a strange dark area under the dome ... vent or collapse feature - photo Planet LAbs / via Simon Carn

Merapi - a strange dark area under the dome ... vent or collapse feature - photo Planet LAbs / via Simon Carn

The rest of the volcanic news is summarized on the Volcanodiscovery map below.

Volcanoes in activity on 04.12.2018 - Doc. VolcanoDiscovery

Volcanoes in activity on 04.12.2018 - Doc. VolcanoDiscovery

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