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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
Suwanosejima - 05.01.2020, respectively at 2:40 p.m. and 10:22 p.m. - JMA webcam - one click to enlarge
Suwanosejima - 05.01.2020, respectively at 2:40 p.m. and 10:22 p.m. - JMA webcam - one click to enlarge

Suwanosejima - 05.01.2020, respectively at 2:40 p.m. and 10:22 p.m. - JMA webcam - one click to enlarge

The eruption continues on Suwanosejima.

Two episodes were reported for this January 5, 2020, the first at 2:38 p.m. local, accompanied by an ash plume at 1,400 meters above the Mitake crater, moving towards the SW. The second episode was reported at 10:22 p.m., with ashes expected to the NW, the winds having turned.

Source: JMA

Nishinoshima - ALOS-2 / JAXA images via GSI 20.12.2019 (right) and 03.01.2020 (left)

Nishinoshima - ALOS-2 / JAXA images via GSI 20.12.2019 (right) and 03.01.2020 (left)

On Nishinoshima, in the Ogasawara islands, the morphological evolution of the cone and the contours of the island continues.

The GSI reports a modification on both the NW and SSE coast on December 20, 2019, and a significant increase on the NNE side on January 3, based on ALOS-2 satellite images.

Moderate to high thermal anomalies are observed by Mirova.

 

Sources: GSI / ALOS - JAXA & Mirova

Nishinoshima - thermal anomalies on 06.01.2020 / 04h05 - Doc. Mirova _MODIS
Nishinoshima - thermal anomalies on 06.01.2020 / 04h05 - Doc. Mirova _MODIS

Nishinoshima - thermal anomalies on 06.01.2020 / 04h05 - Doc. Mirova _MODIS

At Anak Krakatau, eruptive activity has decreased since the episode of December 31; plume heights decreased from 2,200 meters to 500 meters maximum.

Between December 30 and January 5, the PVMBG recorded 27 eruption earthquakes, 14 breath earthquakes, 12 low-frequency earthquakes 2 episodes of harmonic tremor and continuous tremor with amplitudes ranging from 0.5 to 55 mm.

 

Note that after cleaning the webcam, you can still see water in the lake, without seeing the more or less important surface.

 

Sources: PVMBG & Magma Indonesia

Anak Krakatau - 06.01.2020 / 12.59pm - PVMBG webcam

Anak Krakatau - 06.01.2020 / 12.59pm - PVMBG webcam

Anak Krakatau - seismicity at 04.01.2020 - Doc. Magma Indonesia

Anak Krakatau - seismicity at 04.01.2020 - Doc. Magma Indonesia

Commenter cet article

Juste 06/01/2020 19:59

Heureuse année Mr Duyck et excellente santé pour nous faire vivre tant de belles aventures sur une planete vivante . Que la nouvelle année soit volcanique, oui, mais sans aucun blessé . Merci encore de nous faire partager votre passion.

Bernard Duyck 07/01/2020 08:15

Bonne année Juste ! Merci de rester fidèle au blog . Il faudra que les volcanophiles soient un peu plus prudents, bien équipés, et suivent les indications des observatoires ... mais certains dangers resteront imprévisibles. Les volcans ne sont pas un milieu "de confort" .

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