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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 : #Actualités volcaniques

Activity on the East Rift Zone of Kilauea is similar to previous days.

 

Kilauea East rift zone - the newly formed small island has become a peninsula - photo Bruce Omori 16.07.2018

Kilauea East rift zone - the newly formed small island has become a peninsula - photo Bruce Omori 16.07.2018

The USGS recalls that the active entry of lava into the ocean at the southern zone is a dangerous zone ... besides the creation of a laze plume, an explosive interaction with ejections of molten lava and rocky debris hundreds of meters inland and towards the ocean is unpredictable.

Kilauea East rift zone - the entrance to the lava at sea in Ahalanui generates a powerful plume of laze - photo 16.07.2018 USGS

Kilauea East rift zone - the entrance to the lava at sea in Ahalanui generates a powerful plume of laze - photo 16.07.2018 USGS

Kilauea East Rift Zone - Explosion at the entrance of the lava at sea on 16.07.2018 around 6 am - photos Ryan Finlay via Hawaii Tracker & Hawaii County Civil Defense Agency
Kilauea East Rift Zone - Explosion at the entrance of the lava at sea on 16.07.2018 around 6 am - photos Ryan Finlay via Hawaii Tracker & Hawaii County Civil Defense Agency

Kilauea East Rift Zone - Explosion at the entrance of the lava at sea on 16.07.2018 around 6 am - photos Ryan Finlay via Hawaii Tracker & Hawaii County Civil Defense Agency

An unfortunate incident happened yesterday morning, illustrating this warning.

According to the DLNR, twenty-three people aboard a ship from Lava Ocean Tours were injured shortly after 6 am when what was described as a "lava bomb" leaked molten lava on the metal roof of the ship and made a big hole in it. The Hawaii County Fire Department reports that four people were transported by ambulance to the Hilo Medical Center, nine others went to the hospital in private vehicles and ten people were treated at the scene for burns. The most serious injury was a traumatic leg injury sustained by a 20-year-old woman. All other passengers who went to the hospital were treated for minor scrapes and burns.

After the explosion, the boat returned to her wharf at Wailoa Small Boat Harbor in Hilo. A state and federal investigation is under way to determine the causes of the incident; the position of the boat outside or in the safety zone, set at 300 meters, will be examined.

 

Sources: HVO-USGS, Hot Seat Hawaii, DLNR

Kilauea East Rift Zone - Property damage to excursion boat following the explosion when entering the lava at sea on 16.07.2018 around 6 pm - Hot Seat Hawaii photos and Hawaii County Civil Defense Agency - a click for enlarge
Kilauea East Rift Zone - Property damage to excursion boat following the explosion when entering the lava at sea on 16.07.2018 around 6 pm - Hot Seat Hawaii photos and Hawaii County Civil Defense Agency - a click for enlargeKilauea East Rift Zone - Property damage to excursion boat following the explosion when entering the lava at sea on 16.07.2018 around 6 pm - Hot Seat Hawaii photos and Hawaii County Civil Defense Agency - a click for enlarge

Kilauea East Rift Zone - Property damage to excursion boat following the explosion when entering the lava at sea on 16.07.2018 around 6 pm - Hot Seat Hawaii photos and Hawaii County Civil Defense Agency - a click for enlarge

POVI reports a sequence of powerful steam emission at Villarica on 16,07,2018, culminating at 10:47-10:48; it resulted in a deposit of pyroclastic materials on the west, north and east walls of the crater.

Source: POVI
 

Villarica - 16.07.2018 / 10h47-10h48 - Emission of steam and pyroclastic deposits on the walls of the crater - POVI photos
Villarica - 16.07.2018 / 10h47-10h48 - Emission of steam and pyroclastic deposits on the walls of the crater - POVI photos

Villarica - 16.07.2018 / 10h47-10h48 - Emission of steam and pyroclastic deposits on the walls of the crater - POVI photos

At Nevados de Chillan, the explosions of July 13, 14 and 15 were, according to Sernageomin, the most energetic of the 2016-2018 activity cycle; they caused the almost total destruction of the dome that had been installed since December 2017.

The debris of the dome was deposited as an avalanche extending 800 meters from the crater over a width of about twenty meters.

The explosions were caused by the overpressure caused by the closure of the volcanic pipe in relation to the location of the dacitic dome at its summit, which can be associated with a vulcanian eruptive mechanism.

Sources: Sernageomin and Volcanes de Chile
 

Nevados de Chillan - the dome in the active crater on 03.04.2018 / N.Luengo and 16.07.2018 / Carabinieros de Chile - on the second photo, we can see the almost destruction of the dome and the course of the avalanche of debris

Nevados de Chillan - the dome in the active crater on 03.04.2018 / N.Luengo and 16.07.2018 / Carabinieros de Chile - on the second photo, we can see the almost destruction of the dome and the course of the avalanche of debris

Nevados de Chillan - flying over the dome bursting with explosions from 13 to 15 July - photo Nocolas Luengo

Nevados de Chillan - flying over the dome bursting with explosions from 13 to 15 July - photo Nocolas Luengo

Nevados de Chillan - infography summarizing the current state of the volcano and the possible risks following the activity of the moment - doc.Volcanologia de Chile

Nevados de Chillan - infography summarizing the current state of the volcano and the possible risks following the activity of the moment - doc.Volcanologia de Chile

The activity of Sabancaya in the week of 9 to 15 July 2018 is maintained at a moderate level, with an average of 23 explosions per day, accompanied by plumes at 2,500 meters maximum height, before dispersing on a sector south and east .

Sulfur dioxide flow remains high with a peak of 14,859 tonnes / day recorded on July 13th.

Sources: IGPeru, OVI, Ingemmet

Sabancaya - Summary of the activity from 9 to 15 July 2018 - doc.IGPeru, OVI, Ingemmet

Sabancaya - Summary of the activity from 9 to 15 July 2018 - doc.IGPeru, OVI, Ingemmet

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