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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
Dukono - 11.11.2020 / 17:27 WIT - Doc. PVMBG / Magma Indonesia

Dukono - 11.11.2020 / 17:27 WIT - Doc. PVMBG / Magma Indonesia

An eruptive episode was observed at a height of 100 to 800 m above the summit of Dukono, in the Moluccas, on November 11 at 5:27 p.m. WIT. The ash plume is observed white-gray

Thanks to seismographic recordings of November 11, 2020, 2 eruption and continuous tremor earthquakes were recorded, with an amplitude of 0.5-7 mm (dominant 2 mm).

This November 12, at 6:33 am, the PVMBG reports a thick white-gray plume 800 meters high, leaning towards the south.

People around G. Dukono and visitors / tourists should not be active, climb and approach Malupang Warirang crater within a radius of 2 km.

 

Source: PVMBG & VAACDarwin

 Dukono - 12.11.2020 / 06:33 WIT - PGA Dukono

Dukono - 12.11.2020 / 06:33 WIT - PGA Dukono

2020.11.12  07h30Z  Dukono - volcanic ash advisory  12.11.2020 / 0730Z - Doc. VAAC Darwin  IDY65285

2020.11.12 07h30Z Dukono - volcanic ash advisory 12.11.2020 / 0730Z - Doc. VAAC Darwin IDY65285

At the Poas Volcano, no rash is reported. The seismic activity remains similar to the previous day.

The Poás volcano demonstrates passive degassing and vigorous convection of the laguna caliente, and relatively high seismicity, without eruptive activity. The point of view volcanic gas concentration was very low today (<1ppm)

 

Rincon de la Vieja volcano

At 5:40:00 local time on November 11, 2020, an eruption is recorded at the Rincon de la Vieja volcano, with a column that rises 1,000 meters above the height of the crater and 2,916 meters above the sea ​​level (meters above sea level) (9,564.48 ft).

Duration of activity: 5 minutes.

 

Source: Ovsicori

Poas - 11.11.2020 / 09h57 - passive degassing and covection cells - Ovsicori webcam

Poas - 11.11.2020 / 09h57 - passive degassing and covection cells - Ovsicori webcam

Rincon de La Vieja - 11.11.2020 / 5:40 am - Ovsicori

Rincon de La Vieja - 11.11.2020 / 5:40 am - Ovsicori

Explosive eruptive activity continues on Suwanosejima, with two episodes reported by JMA on November 12.

A first at 2:57 am, accompanied by a 600-meter-high plume drifted towards the southwest.

A second at 12:45 was accompanied by a plume 1,000 meters high, drifting west.

 

Source: JMA

 Suwanosejima - 12.11.2020 / 2h50-3h - JMA webcam

Suwanosejima - 12.11.2020 / 2h50-3h - JMA webcam

  Suwanosejima - 12.11.2020 / 12:48 - JMA webcam

Suwanosejima - 12.11.2020 / 12:48 - JMA webcam

Observations from webcams on Whakaari / White Island and during a gas measurement flight on November 12 show dark particles in the plume. These were placed on some webcams and the plane flying a few km downwind.

There is currently no indication of an eruption and the volcanic alert level remains at 1.

Update 13.11.2020 : New observations show small amounts of volcanic ash being carried in the steam and gas plume at Whakaari/White Island and deposited on the island’s webcams. The Volcanic Alert Level is now raised to Level 2 and Aviation Colour Code raised to Yellow
The Volcanic Alert Level reflects the current level of volcanic unrest or activity and is not a forecast of future activity.

Volcanic Alert Level 2 indicates the primary hazards are those expected during volcanic unrest; steam discharge, volcanic gas, earthquakes, landslides and hydrothermal activity. While Volcano Alert Level 2 is mostly associated with environmental hazards, eruptions can still occur with little or no warning.

Source: GeoNet

Whakaari / White Island - 12.11.2020 - gas and particles - photo GeoNet

Whakaari / White Island - 12.11.2020 - gas and particles - photo GeoNet

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