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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
Masaya - explosion at the crater Santiago 21.07.2019 / 16h55 - photo TN8

Masaya - explosion at the crater Santiago 21.07.2019 / 16h55 - photo TN8

According to Ineter, an explosion occurred on Sunday, July 21, in the afternoon in the crater Santiago of Masaya in Nicaragua, famous for presenting one of the few visible lava lakes in the world, accessible by car.

According to official reports, the ashes released did not cause injuries to people who were near the crater and did not pose a problem for neighboring populations, but the authorities did not rule out any additional activities. The Masaya Park has been temporarily closed.

"This is a low-energy event that occurs when one of the crater's internal ducts becomes clogged and holds high-pressure gases, which accumulate energy to produce an explosion, expelling ashes, and sometimes rocks ", according to Ineter.

 

Source: Ineter, via El Economista

Villarica - incandescence and expulsion of lava flakes (arrow) on 22.07.2019 / 20:15 - Doc. POVI

Villarica - incandescence and expulsion of lava flakes (arrow) on 22.07.2019 / 20:15 - Doc. POVI

At Villarica, POVI reports high levels of incandescence and the expulsion of lava flaps, revealing the extrusion of a small volume of juvenile magma from the depths.

Such a phenomenon was observed in July 2018.

 

Source: POVI

The Ubinas activity is supervised by the IGP teams

The Ubinas activity is supervised by the IGP teams

In Peru, Ubinas has new ash emissions between 500 and 1.500 m., during the day of July 22, scattered to the southeast.

An explosion on July 22 around 11:25 pm projected incandescent materials. The ashes spread over more than 10 km. to the villages of Ubinas, Lloque and Chojata districts.

Emissions of ashes affect people and animals, mainly camelids, which lack forage.

The cloud of sulfur dioxide, injected during the eruption of July 19 at altitude, was conveyed by the jet stream in the southern hemisphere in three jous from Peru to Madagascar. The SO2 amounts are around 0.1 Tg (Sentinel 5P Tropomi measurements, via Simon Carn)

 

Sources: IGPeru, VAAC Buenos Aires, Sentinel 5P / Tropomi

Ubinas - field monitoring on 22.07.2019 - photo IGP

Ubinas - field monitoring on 22.07.2019 - photo IGP

Ubinas - Situation on 22.07.2019, respectively at 16:50 and 23:25 - webcam IGP - one click to enlargeUbinas - Situation on 22.07.2019, respectively at 16:50 and 23:25 - webcam IGP - one click to enlarge

Ubinas - Situation on 22.07.2019, respectively at 16:50 and 23:25 - webcam IGP - one click to enlarge

Ubinas - volcanic Ash Advisory for 22.07.2019 / 14h50Z and 23.07.2019 / 03h20Z - Doc. VAAC Buenos Aires - a click to enlargeUbinas - volcanic Ash Advisory for 22.07.2019 / 14h50Z and 23.07.2019 / 03h20Z - Doc. VAAC Buenos Aires - a click to enlarge

Ubinas - volcanic Ash Advisory for 22.07.2019 / 14h50Z and 23.07.2019 / 03h20Z - Doc. VAAC Buenos Aires - a click to enlarge

Satellites attest to thermal anomalies that still mark Stromboli on 22 and 23 July 2019.

Mirova reports rates of 170-260 MW on July 22, and 167 MW on July 23 at 1:15.

The hot spots at the top and in the Sciara del Fuoco are detailed on the Sentinel 2 image.

 

Sources: Mirova / Modis and Sentinel 2

Stromboli - thermal anomalies on 23.07.2019 / 01h15 - Doc. Mirova MODIS_VRP - one click to enlargeStromboli - thermal anomalies on 23.07.2019 / 01h15 - Doc. Mirova MODIS_VRP - one click to enlarge

Stromboli - thermal anomalies on 23.07.2019 / 01h15 - Doc. Mirova MODIS_VRP - one click to enlarge

Stromboli - hot spots from 22.07.2019 - sentinel image 2 bands 12,11,4 - one click to enlarge

Stromboli - hot spots from 22.07.2019 - sentinel image 2 bands 12,11,4 - one click to enlarge

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