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 : #Actualités volcaniques
 Colima - explosion on 17.12.2016 / 21h loc. - photo S.Tapiro

Colima - explosion on 17.12.2016 / 21h loc. - photo S.Tapiro

At the Colima, after a few beautiful explosions in the morning of December 17, the volcano was obscured by the clouds until evening.
At 21h. local time, a strong explosion occurred, with fallout of blocks on the flanks.
 
Sources: Tapiro foto and WebcamsdeMexico

Colima - 17.12.2016 / 21h and 21h01 - WebcamsdeMexico - one click to enlargeColima - 17.12.2016 / 21h and 21h01 - WebcamsdeMexico - one click to enlarge

Colima - 17.12.2016 / 21h and 21h01 - WebcamsdeMexico - one click to enlarge

In Nicaragua, the Telica has a low gas emission and incandescence, presumably due to their heat on the night of 16. The gas emanation continued on 17 December.
Evolution to follow ...


Source: Ineter webcam

Telica - 16.12.2016 / 20h01 loc - webcam seismic station TELN / Ineter

Telica - 16.12.2016 / 20h01 loc - webcam seismic station TELN / Ineter

Telica - 17.12.2016 / 08h loc - webcam seismic station TELN / Ineter

Telica - 17.12.2016 / 08h loc - webcam seismic station TELN / Ineter

The Copahue, still in yellow alert, continues its emissions of ashes. An interesting visit of the crater on December 15 made possible to visualize the intracratric pyroclastic cone responsible for these ash plumes.

Sources: Sernageomin & Geologia in the UNRN
 

Copahue - 17.12.2016 / 14h30 GMT - picture by Sernageomin

Copahue - 17.12.2016 / 14h30 GMT - picture by Sernageomin

Copahue 15.12.2016 - intracratronic cone - photo Alberto garrido / U.N. Rio Negro
Copahue 15.12.2016 - intracratronic cone - photo Alberto garrido / U.N. Rio Negro

Copahue 15.12.2016 - intracratronic cone - photo Alberto garrido / U.N. Rio Negro

In Hawaii,  61g lava flow is still active, the main branch feeding the sea entrance to Kamokuna, the secondary branch advancing gently towards the east at a rate of about ten meters per day, covering the lava emitted previously by episode 61 g. The topography suggests that it will take the direction of the ocean, provided the feeding continues - see the map.
 
A question often asked: where does the name of the 61g lava flow come from?
HVO volcanologists number the sequences of activity progressively, and the current episode forms the current 61st episode on the East Rift. The recent breakout feeding the secondary branch is still part of casting 61g.


Sources: HVO & Hawaii NP

Evolution of the lava field 61 g - HVO map (1: 24,000-scale USGS digital topographic map draped over the 1983 10-m digital elevation model (DEM).

Evolution of the lava field 61 g - HVO map (1: 24,000-scale USGS digital topographic map draped over the 1983 10-m digital elevation model (DEM).

Commenter cet article

Articles récents

Hébergé par Overblog