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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
Bromo - 18.03.2019 - photo Teguh Wibowo, chairman of Bromo Lovers for WartaBromo

Bromo - 18.03.2019 - photo Teguh Wibowo, chairman of Bromo Lovers for WartaBromo

The activity of Bromo is up this Monday, with already five eruptive episodes; a thick plume of ash is observed by the officer in charge of the observation post of the volcano reaching 1,500 meters above the summit.

At the seismicity level, a continuous micro-tremor is recorded, with an amplitude of 0.5-19 mm, the dominant being 3 mm. Volcanic earthquakes are of the order of 29-30 mm of amplitude, with a duration of 47-58 sec.

Note : a tectonic earthquake remote with an amplitude of 32 mm during 253 seconds.

Although the activity is increasing, the level remains at 2 / waspada, with a recommendation not to approach the volcano within a radius of 1 km.

VAAC Darwin reports an orange aviation code.

 

Sources: BNPB, PVMBG via Wartabromo, and VAAC Darwin

Bromo - 18.03.2019 - photo Teguh Wibowo via Pananjakan / via Sutopo Purwo Nugroho

Bromo - 18.03.2019 - photo Teguh Wibowo via Pananjakan / via Sutopo Purwo Nugroho

At Anak Krakatau, an eruptive episode is reported on March 18 at 6:05 am WIB, accompanied by a white plume, tilted to the north, reaching about 500 meters above the current summit / about 657 meters asl.

On the seismogram, the maximum amplitude is 55 mm for a duration of 4 min. 3 sec.

The alert level is 3 / siaga, with a prohibited area of ​​5 km radius. The aviation code is set to orange by VAAC Darwin.

 

Sources: PVMBG and VAAC Darwin

Anak Krakatau - white plume from 18.03.2019 - photo PVMBG

Anak Krakatau - white plume from 18.03.2019 - photo PVMBG

Also in Indonesia, a magnitude 5.4 earthquake hit Lombok Island on 17.03.2019 at 07:07 UTC; its epicenter is located east of the Rinjani volcano.

He damaged houses, caused landslides and claimed two lives and dozens of injuries.

It is considered as a replica of the sequence of earthquakes that shook the region in July-August 2018.

Source: EMSC

Lombok - epicenter of the earthquake of  M5.4 the 17.03.2019 / 7:07 UTC

Lombok - epicenter of the earthquake of M5.4 the 17.03.2019 / 7:07 UTC

In Chile, POVI reports a sporadic Strombolian explosion on 17.03.2019 at 0:12 am at Villarica, with expulsion of incandescent material 25 meters above the crater rim.

Source: POVI

Villarica - 17.03.2019 at 0:12 - Doc. Povi

Villarica - 17.03.2019 at 0:12 - Doc. Povi

Small return on the active volcanoes in Kamchatka.

The aviation code remains orange for Sheveluch, Karymsky and Bezimianny.

Annamaria Luongo shared a Sentinel 2B L1C image of the simultaneous plumes of the three volcanoes.

Simon Carn illustrates the ash - gas split in a volcanic cloud issued on March 15 by the Bezimianny, with images of Sentinel 5P / Tropomi from March 16 running at 1:20 am.

 

Sources: A.Luongo and S.Carn

 Shiveluch, Bezymianny and Karymsky, in the same picture (detected by Sentinel2, 2019-03-16 / Anamaria Luongo / Twitter).

 Shiveluch, Bezymianny and Karymsky, in the same picture (detected by Sentinel2, 2019-03-16 / Anamaria Luongo / Twitter).

Ashes and SO2 of the Bezimianny eruption of 15.03.2019, captured by Sentinel 5P / Tropomi SO2 and UV aerosol index on 16.03.2019 / 01h20 - "A good case of ash-gas separation in a volcanic cloud". - Doc. transmitted by Simon Carn
Ashes and SO2 of the Bezimianny eruption of 15.03.2019, captured by Sentinel 5P / Tropomi SO2 and UV aerosol index on 16.03.2019 / 01h20 - "A good case of ash-gas separation in a volcanic cloud". - Doc. transmitted by Simon Carn

Ashes and SO2 of the Bezimianny eruption of 15.03.2019, captured by Sentinel 5P / Tropomi SO2 and UV aerosol index on 16.03.2019 / 01h20 - "A good case of ash-gas separation in a volcanic cloud". - Doc. transmitted by Simon Carn

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