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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 news, #Sismologie

Activity on Kadovar in Papua New Guinea is relatively little documented by the observatories.

Since September, it seems to concern only the summit, no plume coming out of the coastal dome.

Kadovar - image 12.09.2018 Sentinel-2 image bands 12,11,4

Kadovar - image 12.09.2018 Sentinel-2 image bands 12,11,4

The Sentinel 2 images show white top degassing on September 12, and on September 22, more intense.

On the images of September 22, September 27, and October 10, it is found that the west side of the island, which had greened, is covered with ashes.

A notice of ash dispersal is issued on 28 September by VAAC Darwin.

On October 12, the plumes of ashes succeed one another, leaving a rosary of clouds towards the west, always coming from the summit.

Thermal anomalies are reported by Mirova on 14 and 15 October, respectively 17 and 22 MW.

Kadovar - 22.09.2018 - image Sentinel-2 image nat color

Kadovar - 22.09.2018 - image Sentinel-2 image nat color

Kadovar - the island covered with ashes on 27.09.2018 - image Sentinel-2 image nat.colors

Kadovar - the island covered with ashes on 27.09.2018 - image Sentinel-2 image nat.colors

Kadovar - 12.10.2018 - Sentinel-2 images respectively bands 12,11,4, and nat.colors for zoom
Kadovar - 12.10.2018 - Sentinel-2 images respectively bands 12,11,4, and nat.colors for zoom

Kadovar - 12.10.2018 - Sentinel-2 images respectively bands 12,11,4, and nat.colors for zoom

It should be noted that the Rabaul volcano Observatory reports an increase in activity on 21 September, remaining high until 26 September; Gray and brown plumes are observed several hundred meters above the summit crater, drifting to the northwest. Incandescence is reported from the main crater, southeast costal vent and other areas.

Small amounts of ash fell on Blup Blup Island.

On October 1, a plume rises to 900 meters asl, drifting westward; and on October 3, a cloud of ash is observed by satellite, drifting westward at an altitude of 2,100 meters asl. (in GVP)

Sources: Sentinel 2, VAAC Darwin and RVO / Global volcanism Program weekly report 

Kadovar - Volcanic ash advisory 28.09, 08.10, and 16.10.2018 - Doc. VAACKadovar - Volcanic ash advisory 28.09, 08.10, and 16.10.2018 - Doc. VAAC
Kadovar - Volcanic ash advisory 28.09, 08.10, and 16.10.2018 - Doc. VAAC

Kadovar - Volcanic ash advisory 28.09, 08.10, and 16.10.2018 - Doc. VAAC

 Kadovar - Radiative power at 16.10.2018 / 0h10 - DoC.Mirova Modis

Kadovar - Radiative power at 16.10.2018 / 0h10 - DoC.Mirova Modis

The Ovsicori reports an eruption on October 15 at 5:42 am at Turrialba, lasting a few minutes and accompanied by a plume of gas and ash rising to 1,000 meters above the crater.

The seismographs recorded another explosion signal at 6:16.

Subsequently, passive emissions at a hundred meters above the crater occurred.
 

Source: Ovsicori

 Turrialba - 15.10.2018 - respectively at 6h and 7h20 - webcam Ovsicori
 Turrialba - 15.10.2018 - respectively at 6h and 7h20 - webcam Ovsicori

Turrialba - 15.10.2018 - respectively at 6h and 7h20 - webcam Ovsicori

Turrialba, seen from the valley on 15.10.2018 - photo Katica Guzmán via Ovsicori / FB

Turrialba, seen from the valley on 15.10.2018 - photo Katica Guzmán via Ovsicori / FB

The assessment of the Sulawesi / Palu earthquake of September 28 has been revised ... still on the rise, unfortunately.

As of 15 October, there are 2,100 dead, 4,612 seriously injured, 680 missing, and 78,994 displaced persons.

Source BNPB

Palu earthquake - updated on 15.10.2018 - Doc.BNPB

Palu earthquake - updated on 15.10.2018 - Doc.BNPB

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