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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

After ash emissions in the morning, a very powerful Strombolian episode occurred at  Agung yesterday 2 July at 9:04 pm WITA; it was accompanied by a loud noise of explosion, and projections of incandescent materials up to a height of 2,000 meters, which fell back on about the upper third of the volcano, causing consequent forest fires.

A thick plume of ash has developed into a mushroom, traveled by lightning, climbing up to a height of 2,000 meters above the crater, inclined towards the west, direction then taken by the cloud of ashes.

Agung - beginning of the Strombolian episode of 02.07.2018 / video telksom 21h08

Agung - beginning of the Strombolian episode of 02.07.2018 / video telksom 21h08

Agung - development of strombolian eruption at 21:08 / webcam VSI and 21:14 / Instagram respectively
Agung - development of strombolian eruption at 21:08 / webcam VSI and 21:14 / Instagram respectively

Agung - development of strombolian eruption at 21:08 / webcam VSI and 21:14 / Instagram respectively

Agung - the burning of the summit of the volcano at 21:14 on 02.07.2018 - Photo OM Jewel Creation / Instagram / Twitter

Agung - the burning of the summit of the volcano at 21:14 on 02.07.2018 - Photo OM Jewel Creation / Instagram / Twitter

Our friend Thierry Sluys, living in Tulamben, had only a few minutes to evacuate his hotel, and to join on the road the inhabitants who were fleeing in the same direction.

He confided to me his impressions: "When I arrived on the parking lot, a dantesque spectacle. On this side of the volcano, it was red from top to bottom ! I took my rental car and ran to get out of the area. Until Ahmed, more than 15 km of road, I saw huge incandescent blocks that hurtled down the slopes. The dust raised by them made me think of pyroclastic flows foreheads. Fortunately it was not the case, but without any information, I was really worried.  "

The eruption lasted 7 minutes 21 seconds, with an amplitude of 24 mm on the seismogram, according to the PVMBG. The level of alert remains fixed at 3, with a prohibited area of ​​4 km radius. BNPB does not report casualties.

The observation of the Himawari BMKG satellite images shows that the volcanic ash spread is mainly towards the west. So far, Gusti Ngurah Rai International Airport in Denpasar Bali still operates normally. Similarly, Banyuwangi, Jember and Lombok airports.
 

Agung - two more photos of the fallout and the burning of the summit on 02.07.2018 - on the left, photo of kemal.arsjad / Twitter; right, photo by Ayu Cintya Laksmi / Facebook
Agung - two more photos of the fallout and the burning of the summit on 02.07.2018 - on the left, photo of kemal.arsjad / Twitter; right, photo by Ayu Cintya Laksmi / Facebook

Agung - two more photos of the fallout and the burning of the summit on 02.07.2018 - on the left, photo of kemal.arsjad / Twitter; right, photo by Ayu Cintya Laksmi / Facebook

Agung - seismogram of 02.07.2018 - Doc.Magma Indonesia

Agung - seismogram of 02.07.2018 - Doc.Magma Indonesia

Agung - images of the ash cloud moving westward by the Himawari satellite, respectively at 21h, 21h30 and 22h WIB - a click to open the thumbnails.Agung - images of the ash cloud moving westward by the Himawari satellite, respectively at 21h, 21h30 and 22h WIB - a click to open the thumbnails.
Agung - images of the ash cloud moving westward by the Himawari satellite, respectively at 21h, 21h30 and 22h WIB - a click to open the thumbnails.

Agung - images of the ash cloud moving westward by the Himawari satellite, respectively at 21h, 21h30 and 22h WIB - a click to open the thumbnails.

This morning, July 3, the PVMBG informs of 3 eruptions of lesser power, respectively at 4:13, 09:28 and 09:46 local.

Agung - 03.07.2018, respectively at 04h19, 09h32 and 09h48 - webbcams PVMBGAgung - 03.07.2018, respectively at 04h19, 09h32 and 09h48 - webbcams PVMBG
Agung - 03.07.2018, respectively at 04h19, 09h32 and 09h48 - webbcams PVMBG

Agung - 03.07.2018, respectively at 04h19, 09h32 and 09h48 - webbcams PVMBG

Sources:

- KESDM, Geological Agency, PVMBG - MAgma Indonesia - BNPB

- Communication and photo by Thierry Sluys

Sierra Negra - "extreme" thermal anomaly on 2 July / 8:15 - Doc.Mirova Modis
Sierra Negra - "extreme" thermal anomaly on 2 July / 8:15 - Doc.Mirova Modis

Sierra Negra - "extreme" thermal anomaly on 2 July / 8:15 - Doc.Mirova Modis

In Ecuador, the eruption of Sierra Negra is not over.

After a small earthquake on July 1, 2018 at 15:52 GMT, tremor appeared.
At 18 o'clock, the National Park staff reports incandescence and the presence of lava flows on the northwest flank of the volcano. The IGEPN informs, for the period from 01 to 11 am to 02 July at 11 am, 286 volcano-tectonic earthquakes, 43 LP earthquakes, 3 VLP earthquakes and emission tremor. An ash emission was mounted 1,000 meters above the crater, then headed west.

Sources: IGEPN & Mirova

Kilauea East Rift Zone - Fissure 8 feeds a perched canal - photo 02.07.2018 / 05:45 Bruce Omori / Paradise helicopters

Kilauea East Rift Zone - Fissure 8 feeds a perched canal - photo 02.07.2018 / 05:45 Bruce Omori / Paradise helicopters

In Kilauea, the situation does not show any substantial changes this July 2.

However, note the large volume of lava produced by the fissure 8, which fills the capacity of the perched channel, and causes a series of small overflows.

The lava threatens the few houses still intact in the northern zone of its arrival at sea.

Kilauea East rift zone - lava threatens the last houses still intact north of the delta - photo 02.07.2018 / 05:45 Bruce Omori / Paradise helicopters 

Kilauea East rift zone - lava threatens the last houses still intact north of the delta - photo 02.07.2018 / 05:45 Bruce Omori / Paradise helicopters 

Kilauea East rift zone - 02.07.2018 / 12pm - Map of the flows and sea entrances - HVO-USGS

Kilauea East rift zone - 02.07.2018 / 12pm - Map of the flows and sea entrances - HVO-USGS

Kilauea - sea inlet plume - image NIR / Red / Green bands / Big Data Earth / Copernicus Sentinel

Kilauea - sea inlet plume - image NIR / Red / Green bands / Big Data Earth / Copernicus Sentinel

A collapse explosion occurred at the summit at 1:24 HST; the radar images show a low ash-poor plume with energy equivalent to an earthquake of M 5.3.

Sources: HVO-USGS & Bruce Omori

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