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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

Etna still shows activity at the southeast crater.

Two flows were visible on Saturday evening on the southeastern flanks; Strombolian activity illuminates the crater and falling lapilli falls gild the upper slopes.

Sulfur dioxide emissions remain significant, with a cloud towards the southwest, which reaches Tunisia.

 

Sources: local observers and Sentinel-5P / NASA Earth Observatory

Etna - 21.05.2022 - image merging a Nasa Earth Observatory and Sentinel-5 P view, illustrating the SO2 cloud heading towards Tunisia - Doc. PlanetaryEye

Etna - 21.05.2022 - image merging a Nasa Earth Observatory and Sentinel-5 P view, illustrating the SO2 cloud heading towards Tunisia - Doc. PlanetaryEye

Etna - thermal anomalies and radiative power as of 22.05.2022 / 01:45 - Doc. Mirova MODIS
Etna - thermal anomalies and radiative power as of 22.05.2022 / 01:45 - Doc. Mirova MODIS

Etna - thermal anomalies and radiative power as of 22.05.2022 / 01:45 - Doc. Mirova MODIS

Etna - tremor in the red zone on 22.05.2022 / 07h - Doc. INGV OE

Etna - tremor in the red zone on 22.05.2022 / 07h - Doc. INGV OE

Eruptive activity continues at Suwanosejima.

The episode which occurred on May 22 at 01:47 local time (21 16:47 UTC) was accompanied by a plume at 1,600 meters above the crater, the highest altitude since the start of the eruption, according to the JMA.

An ash fall is reported on the village of Toshima, 5 km away.

 

Source: JMA

Suwanosejima - ash plume and incandescence on 05.22.2022 / 01:47 loc. - JMA webcam

Suwanosejima - ash plume and incandescence on 05.22.2022 / 01:47 loc. - JMA webcam

Rincon de la Vieja Volcano
A small eruption was recorded by seismographs and infrasound sensor on May 21, 2022 at 02:51 a.m. The eruption had a duration of 7 minutes and an energy inferred from the infrasound signal of 1400 Joules. Another even smaller eruption lasting 6 minutes was also recorded today at 4:43 a.m., with an energy of 396 Joules. The deformation of the volcanic edifice is stable within the uncertainty of the measurements.

 

Source : Ovsicori

 Rincon de La Vieja - photo Chris Allen  / RSN

Rincon de La Vieja - photo Chris Allen / RSN

Strong easterly winds in the vicinity of Katmai and the Valley of Ten Thousand Smokes picked up loose volcanic ash that erupted during the 1912 Novarupta-Katmai eruption and carried it west-northwest this morning. The National Weather Service has issued a SIGMET for this low-level event and suggests the maximum cloud height is 6,000 feet above sea level.

No eruption is in progress. All volcanoes in the Katmai region (Snowy, Griggs, Katmai, Novarupta, Trident, Mageik, Martin) remain color coded GREEN. Re-suspended volcanic ash should be considered hazardous and could harm aircraft and health.

Current volcano alert level: NORMAL
Current Aviation Color Code: GREEN

 

Source: AVO / Friday, May 20, 2022, 11:46 a.m. AKDT (Friday, May 20, 2022, 7:46 p.m. UTC)

Katmai Caldera and Mt Griggs - NPS photo

Katmai Caldera and Mt Griggs - NPS photo

Ashes from Katmai and VTTS, brought back into motion - Doc. USGS archive 21.09.2021

Ashes from Katmai and VTTS, brought back into motion - Doc. USGS archive 21.09.2021

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