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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 : #Actualités volcaniques

Back on the eruption of Manam after the clarifications of the Rabaul Volcano Observatory.

According to the thermal anomalies, the activity must have started towards the beginning of August (see Mirova doc)

The paroxysm began on August 25, 2018 at 6 am local (20h GMT Friday), accompanied by a plume of ash and pyroclasts amounting to 15,000 meters asl.

The villages most affected by ash falls are located between Baliau and Kuluguma, northwest of this small island, barely 10 km wide.

According to the PNG National Disaster Center, two thousand people have evacuated or tried to do it, on the 9,000 inhabitants of Manam.
 

 Manam - eruptive plume of 25.08.2018 - photo James Tunguru / PNG news

Manam - eruptive plume of 25.08.2018 - photo James Tunguru / PNG news

Manam - image in false colors and location of the various villages - the most affected by the ashes are in the quarter NO - PNG MAPSERVER / GVP

Manam - image in false colors and location of the various villages - the most affected by the ashes are in the quarter NO - PNG MAPSERVER / GVP

Manam - thermal anomalies of August 2018 - Doc. Mirova MODIS

Manam - thermal anomalies of August 2018 - Doc. Mirova MODIS

The initial phase of the eruption has passed, but the opening of a new vent suggests a more sustainable activity in the future.

VAAC Darwin issued a red code advisory for aviation. According to meteorologists, the ash cloud should dissipate within 12 hours.

Volcanic cloud detection remains uncertain in the region, due to strong tropical convection, but Nasa Aura OMI satellite has detected sulfur dioxide emission in the order of 20 kilotonnes (via Simon Carn / Michigan Technological University)

Sources: RVO, S.Carn, VAAC Darwin, Reuters Agency and PNG Press

Manam - Volcanic Ash Advisory issued on 24.08.2018 / 21.30 for 24 and 25.08.2018 - Doc.VAAC Darwin

Manam - Volcanic Ash Advisory issued on 24.08.2018 / 21.30 for 24 and 25.08.2018 - Doc.VAAC Darwin

Manam - Sulfur Dioxide Detection on 25.08.2018 / around 7am local via Aura Omi / Nasa satellite - via S.Carn

Manam - Sulfur Dioxide Detection on 25.08.2018 / around 7am local via Aura Omi / Nasa satellite - via S.Carn

Manam - volcano stamps 2009 - Doc. Mountain Stamps
Manam - volcano stamps 2009 - Doc. Mountain Stamps

Manam - volcano stamps 2009 - Doc. Mountain Stamps

The eruption of the new crater southeast of Etna, started August 23, continues, although it declined sharply this August 25.

Strombolian activity at two nearby vents produces a lava flow to the northeast and then to the Valle del Bove.

 

Source: Boris Behncke  and the photographers mentioned 

Etna NSEC eruption of 25.08.2018 - photo Alfio Cariola via Etnative

Etna NSEC eruption of 25.08.2018 - photo Alfio Cariola via Etnative

 Etna - 25.08.2018 - eruption of the NSEC, view of the observatory Pizzi Deneri - photo Boris Behncke

Etna - 25.08.2018 - eruption of the NSEC, view of the observatory Pizzi Deneri - photo Boris Behncke

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