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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
Karymsky - the volcano & the lake of the same name - photo Victor Ivanov. GVP

Karymsky - the volcano & the lake of the same name - photo Victor Ivanov. GVP

Karymsky - displacements of the eruptive plume - Himawari-8 images from 03.11.2021 / 10h-22h GMT - via Olga Girina - one click to enlarge

Karymsky - displacements of the eruptive plume - Himawari-8 images from 03.11.2021 / 10h-22h GMT - via Olga Girina - one click to enlarge

On November 03, a powerful explosive event of the Karymsky volcano occurred with the rise of an eruptive cloud at 9.5 km a.s.l. then up to 10.5 km a.s.l.

On November 4, the plume was pointed at 3500 m. asl.

Two ash clouds, of size up to 400 x560 km and 280 x 80 km continue to be observed on satellite images on 04 November, at a distance of up to 1,100 km to the east and southeast of the volcano over the Pacific Ocean.

 

Sources: Olga Girina - Data from IS VolSatView / Himawari 8 & VAAC Tokyo

Karymsky - Thermal anomalies at 04.11.2021; note the strong anomaly of 03.11 / 11:40 a.m. - Doc.Mirova _MODIS_Latest10NTI

Karymsky - Thermal anomalies at 04.11.2021; note the strong anomaly of 03.11 / 11:40 a.m. - Doc.Mirova _MODIS_Latest10NTI

Karymsky - volcanic ash advisory on 03.11.2021 / 17h58Z - Doc. VAAC Tokyo

Karymsky - volcanic ash advisory on 03.11.2021 / 17h58Z - Doc. VAAC Tokyo

The eruptive activity of Cumbre Vieja continues on La Palma.


Since the last 24 hours (at 04,11,2021 9h UTC). 124 earthquakes were located in the area affected by the volcanic reactivation of Cumbre Vieja, 11 of these earthquakes were felt by the population, having reached the maximum intensity in the epicentral zone III-IV (EMS98) in three earthquake.
The most significant earthquake was the one which occurred yesterday at 10:43 am (UTC), with a magnitude of 3.7 mbLg at a depth of 14 km and felt with an intensity III-IV on the island of La Palma. In the period considered, 8 earthquakes were located at depths of about 30 km, the rest of the hypocenters of the period are located at a shallower depth, about 12 km.

La Palma - ash and gas plume from Cumbre Vieja on 05.11.2021 / 08:38 - photo Volcanes de Canarias

La Palma - ash and gas plume from Cumbre Vieja on 05.11.2021 / 08:38 - photo Volcanes de Canarias

La Palma - seismicity on 05.11.2021 / 06h58 & RSAM on 05.11.2021 / 07h05 - Doc. IGN - a click to enlargeLa Palma - seismicity on 05.11.2021 / 06h58 & RSAM on 05.11.2021 / 07h05 - Doc. IGN - a click to enlarge

La Palma - seismicity on 05.11.2021 / 06h58 & RSAM on 05.11.2021 / 07h05 - Doc. IGN - a click to enlarge

La Palma / Cumbre Vieja - lava flows at 04.11.2021 / 07:02 UTC - Doc. Copernicus EMSR

La Palma / Cumbre Vieja - lava flows at 04.11.2021 / 07:02 UTC - Doc. Copernicus EMSR

The parameters show a general drop in levels.
The amplitude of the volcanic tremor signal has lower levels, without intensifying pulses.

The network of permanent GNSS stations on the island does not show a clear tendency to deformation of the stations closest to the eruptive centers, on the other hand, in the more distant stations, a slight deflation is maintained, perhaps linked to seismicity. deep.

Based on the calibrated image, a column height of 3,200 m is estimated at 08:48 UTC. and the ash cloud with a south-southeast direction.

 

Sources: InVolcan, IGN, IGME, Copernicus EMSR, Gobierno de Canarias

La Palma / Cumbre Vieja - photo of geologist and drone pilot Carlos Lorenzo / 04.11.2021.

La Palma / Cumbre Vieja - photo of geologist and drone pilot Carlos Lorenzo / 04.11.2021.

Last recap of activities at the top of Kīlauea:
Lava continues to emerge from a single vent in the western wall of Halema'uma'u Crater. The short channel leading from the pond inside the vent cone into the lava lake is now covered with a cooled crust.
The western end of the lake showed a maximum altitude of around 798.5m above sea level by the HVO permanent laser rangefinder on November 4, 2021, or around 0.5m above the previous day , and a total increase of about 55 m since lava emerged on September 29. The surface of the whole lava lake is about 62 hectares although the active area is only 12 hectares.

Lava began to seep over the lower part of the collapsed block in Halema'uma'u crater.

Kilauea - Lava has started to seep over the lowest part of the collapsed block in Halema'uma'u Crater. The telephoto image shows lava starting to cover a small area immediately south (right) of a fumarole (white vapor and yellow sulfur stain) .- Doc. USGS
Kilauea - Lava has started to seep over the lowest part of the collapsed block in Halema'uma'u Crater. The telephoto image shows lava starting to cover a small area immediately south (right) of a fumarole (white vapor and yellow sulfur stain) .- Doc. USGS

Kilauea - Lava has started to seep over the lowest part of the collapsed block in Halema'uma'u Crater. The telephoto image shows lava starting to cover a small area immediately south (right) of a fumarole (white vapor and yellow sulfur stain) .- Doc. USGS

Sulfur dioxide emission rates remain high, with a preliminary emission rate for October 28 of at least 3,600 tonnes per day.
Summit tilt and GPS observations show no deformation or minimal deformation over the past week.
The seismic activity remains below the background noise and the volcanic tremor has remained high since the start of the eruption.
No unusual activity was noted in the Kīlauea East Rift area.

 

Source: HVO-USGS

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