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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
Mayon - Lava Flow and Blocks in Bonga Drainage 26.01.2018 at 20:09 PST - Phivolcs photos from the observatory.
Mayon - Lava Flow and Blocks in Bonga Drainage 26.01.2018 at 20:09 PST - Phivolcs photos from the observatory.

Mayon - Lava Flow and Blocks in Bonga Drainage 26.01.2018 at 20:09 PST - Phivolcs photos from the observatory.

Mayon's activity remains in the canvas of previous days - see Phivolcs for details.

A dispatch from AFP, however, reveals the nightmarish atmosphere in which some refugees must live; more than 77,000 people crowded into crowded shelters, when they do not have to build themselves a makeshift shelter ... and in deplorable hygienic conditions, and probably for whole months.

Sources: Phivolcs & LaLibre.be

Karymsky - photo archives Volcanological Institute of Petropavlovsk / Y.Doubik

Karymsky - photo archives Volcanological Institute of Petropavlovsk / Y.Doubik

In Kamchatka, Karymsky, in orange aviation code, experienced a moderate ash explosion on January 27, accompanied by an ash plume of more than 5,000 meters, drifting for 80 km to the northeast.

Sources: KVERT & VAAC Tokyo

New craters possible at Kusatsu - imge sat Airbus / Pasco via NHK World

New craters possible at Kusatsu - imge sat Airbus / Pasco via NHK World

The analysis of Kusatsu-Shiranesan's satellite imagery by the Pasco Company reveals a line of about 200 meters of multiple holes of 10-15 meters in diameter on Motoshirane Peak, near Lake Kagamiike, the site of the recent eruption.

These holes, not visible on previously taken pictures, suggest the formation of new craters.

Another possible crater is pointed 300 meters further east, just a hundred meters from the lift system.

The professor from Tokyo University, Toshitsugu Fujii, said that a surveillance of this area is necessary, because according to him, these new craters could result from different eruptive mechanisms.

Source: NHK

Nevados of Chillan - state of the lava dome on 23.01.2018 - Sernageomin photos
Nevados of Chillan - state of the lava dome on 23.01.2018 - Sernageomin photos

Nevados of Chillan - state of the lava dome on 23.01.2018 - Sernageomin photos

Photos from Sernageomin show that the Nevados de Chillan lava dome is stable; and has discrete outputs of gas and vapor in the crack zone.

Alert level remains in Amarilla

Source: Sernageomin

Erta Ale - 06.01.2018 - the lava river and the glowing holes at the bottom of the southern crater - & the lava river that falls into a well - photos Fotografie mit Seele / Facebook
Erta Ale - 06.01.2018 - the lava river and the glowing holes at the bottom of the southern crater - & the lava river that falls into a well - photos Fotografie mit Seele / Facebook

Erta Ale - 06.01.2018 - the lava river and the glowing holes at the bottom of the southern crater - & the lava river that falls into a well - photos Fotografie mit Seele / Facebook

Some rare news from Erta Ale: it is provided by a German photographer on Facebook.

Having been able to approach the pir crater south on January 6, 2018, he tells us that at a depth of 100 meters, there is no longer a lava lake, but rather a kind of lava river coming out of a tunnel in the right-side wall that disappears at high speed in another tunnel virtually vertically opposite coast.

In the collapsing area of ​​the crater walls, glowing holes are growing day by day, and seem to consume old materials; by five of them, he could see lava, as well as spattering at the level of some hornitos.

Source: Fotografie mit Seele
 

Erta ale - thermal anomalies identified by Mirova / Modis on 26.01.2018

Erta ale - thermal anomalies identified by Mirova / Modis on 26.01.2018

In Poas, the new acidic lake has been increasing in volume since mid-January, following a combination of a reduction in magmatic activity and the emission of gases, and heavy rainfall since August 2017.

It has a milky gray color, a temperature of 60 ° C, an acid pH of about 0.6.

Detailed data by Ovsicori:

-Poás ex-domo lake (Boca A o Boca Roja) Muestra 16571 No. 14 -23 enero 2018
Acid o pH = 0.65,
ORP (potencial oxidación-reducción) of 336 +/- 2 mV,
electrical conductivity 62.9 +/- 2 mS / cm y
Temperatura: 59 - 60 degrees Celsius

- Poás lago Boca B (or Boca Azufrada) Muestra 16572 No. 15 - 23 enero 2018
Acid o pH = 0.64,
ORP (potencial oxidación-reducción) of 347 +/- 2 mV,
electrical conductivity 61.5 +/- 2 mS / cm y
Temperatura: 59 - 60 degrees Celsius

 

Poas - 26.01.2018 / 11h12 - the new hot acid lake - Ovsicori webcam

Poas - 26.01.2018 / 11h12 - the new hot acid lake - Ovsicori webcam

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