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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

An explosion partially destroyed the dome of the Nicanor crater at Nevados de Chillan this January 11 at 5 am local (8h UTC); it has been associated with an LP earthquake, in connection with fluid dynamics, at a depth of 500 meters and medium seismic energy.

Incandescence, and high temperature gas and pyroclastic material emission was observed in the active crater area.

The explosion remains within the current alert level, orange level.

Source: Sernageomin, ICES

Se produjo una explosión menor ocurrida en el domo de lava en el Complejo . Este evento está dentro de comportamiento esperado. Se mantiene alerta técnica . Via:

 
 
 

In Papua New Guinea, after an eruption reported on January 8, a new eruption is reported in Manam.

The ash plume rose to 15.2 km, confirmed by VAAC Darwin and observers on the ground, then drifted to the SSO, passing on the Big Island. Mirova reports a very high thermal anomaly on January 11, with 1,414 MW, falling back to a more moderate level then, between 163 and 79 MW. The aviation code has changed to red.

Manam - thermal anomalies of 11.01.2019 and activity of last year - Doc.Mirova Modis
Manam - thermal anomalies of 11.01.2019 and activity of last year - Doc.Mirova Modis

Manam - thermal anomalies of 11.01.2019 and activity of last year - Doc.Mirova Modis

The 2 active volcanoes in PNG on this image Sentinel 2 SWIR of 10.01.2019 - one click to enlarge

The 2 active volcanoes in PNG on this image Sentinel 2 SWIR of 10.01.2019 - one click to enlarge

Kadovar also has small intermittent eruptions in recent days. Small thermal anomalies are raised by Mirova on January 10, 8 MW, and January 12, 9-10 MW. The Darwin Vaac issued a volcanic ash advisory to the ESS on January 12 and an orange aviation code.

Source: VAAC Darwin; The Watchers

Kadovar - images Sentinel 2 SWIR, respectively on the 5th (image cut off) and 11.01.2019 - there are two hotspots at the top of the island - one click to enlarge
Kadovar - images Sentinel 2 SWIR, respectively on the 5th (image cut off) and 11.01.2019 - there are two hotspots at the top of the island - one click to enlarge

Kadovar - images Sentinel 2 SWIR, respectively on the 5th (image cut off) and 11.01.2019 - there are two hotspots at the top of the island - one click to enlarge

Falls of incandescent blocks follow one another at Merapi: the BPPTKG informs for January 11 at 21:17 an episode lasting 88 seconds, over a length of 800 meters direction of the Gendol river.

On January 12, two falls of blocks are observed: the first at 1:45 local, lasting 122 sec. and a trajectory over 1,700 meters; the second at 2:31, with a duration of 52.6 seconds and a length of 900 meters.

The alert level of Merapi remains at 2 / waspada.

Source: BPPTKG

Merapi - avalanche of blocks over 800 m to the Gendol river 11.01.2019 / 21:17 WIB - BPPTKG

Merapi - avalanche of blocks over 800 m to the Gendol river 11.01.2019 / 21:17 WIB - BPPTKG

Merapi - avalanches of blocks on 12.01.2019 - photo above Kang Narno Winarno - images from below on 12.01.2019 at 1:45 and 2:31 - one click to enlarge
Merapi - avalanches of blocks on 12.01.2019 - photo above Kang Narno Winarno - images from below on 12.01.2019 at 1:45 and 2:31 - one click to enlargeMerapi - avalanches of blocks on 12.01.2019 - photo above Kang Narno Winarno - images from below on 12.01.2019 at 1:45 and 2:31 - one click to enlarge

Merapi - avalanches of blocks on 12.01.2019 - photo above Kang Narno Winarno - images from below on 12.01.2019 at 1:45 and 2:31 - one click to enlarge

Anak Krakatau - 11.01.2019 - manifestations of hydrothermal activity ... the sea is "very hot" - photos James Reynolds / EarthUncut Tv
Anak Krakatau - 11.01.2019 - manifestations of hydrothermal activity ... the sea is "very hot" - photos James Reynolds / EarthUncut Tv

Anak Krakatau - 11.01.2019 - manifestations of hydrothermal activity ... the sea is "very hot" - photos James Reynolds / EarthUncut Tv

Anak Krakatau - DigitalGlobe photo WorldView-2 / 11.01.2019, via Simon Carn.

Anak Krakatau - DigitalGlobe photo WorldView-2 / 11.01.2019, via Simon Carn.

In Krakatau, the Sutseyan eruptions seem to calm down; the hydrothermal activity is manifested by intense outgassing around the volcano, and a brown water color towards Sertung Island, due to iron hydroxide particles, and greenish to the east, following differences in density .

Sources : James Reynolds, Simon Carn, images satellite Copernicue EU et DigitalGlobe WorldView-2 

Anak Krakatau - morphological evolution between December / before the tsunami and the collapse and 11.01.2019 - Doc. Copernicus EU

Anak Krakatau - morphological evolution between December / before the tsunami and the collapse and 11.01.2019 - Doc. Copernicus EU

On January 11, and last night, Etna experienced different explosions on Voragine and / or the northeast crater, accompanied by beautiful ash plumes.

Sources: Salvatore Lo Giudice and Maria Liotta.

Etna NE - 11.01.2019 in the morning and around 13h - photos Salvatore Lo Giudice
Etna NE - 11.01.2019 in the morning and around 13h - photos Salvatore Lo Giudice

Etna NE - 11.01.2019 in the morning and around 13h - photos Salvatore Lo Giudice

Etna, a double plume seen from Bronte in the morning and evening - photos Maria Liotta via EtNative
Etna, a double plume seen from Bronte in the morning and evening - photos Maria Liotta via EtNative

Etna, a double plume seen from Bronte in the morning and evening - photos Maria Liotta via EtNative

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