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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

During the night of 1-2 November and the morning of 2 November, the Turrialba experienced intermittent ash eruptions of varying duration and volume of ash, carried south and southwest, towards Pacayas and Cartago.

The seismicity of the volcano is marked since 24 October by tremor episodes of large amplitude of variable duration.

Sources: Ovsicori and RSN.

Turrialba - ash plumes of 02.11.2018, at 5h39 and local 6h04 - RSN webcam
Turrialba - ash plumes of 02.11.2018, at 5h39 and local 6h04 - RSN webcam

Turrialba - ash plumes of 02.11.2018, at 5h39 and local 6h04 - RSN webcam

On November 2, seismicity increased in Fuego, with explosions accompanied by ash plumes at 4,800 meters asl., generating ash falls to the west on Sangre de Cristo, Santa Sofia, Yuceles, Panimache and Morelia.

The activity is responsible in the morning of a lava flow of 300 meters in the direction of the Ceniza barranca.

Fuego - 02.11.2018 - photo Gustavo Argueta / Twitter

Fuego - 02.11.2018 - photo Gustavo Argueta / Twitter

Fuego - seismogram and RSAM - report 02.11.2018 / 7h / Insivumeh

Fuego - seismogram and RSAM - report 02.11.2018 / 7h / Insivumeh

In his report of 11h. local, the number of explosions rose to 14 per hour, generating shock waves and vibrations felt up to 10 km. The length of the lava flow reaches 400 meters, accompanied by blocks that impacts the vegetation.

The ash falls are reported more in San Pedro Yepocapa.

The registered seismic register concerns explosions, tremor and block avalanches.

Source: Insivumeh reports from 02,11,2018 7am and 11am loc.

Piton de la Fournaise - the eruptive cone and the start of the casting with the thermal camera on 02.11.2018 / 9.30 am - (© OVPF / IPGP).

Piton de la Fournaise - the eruptive cone and the start of the casting with the thermal camera on 02.11.2018 / 9.30 am - (© OVPF / IPGP).

The eruption of the Piton de la Fournaise, started on September 15, 2018, continued throughout the month of October and ended on November 1, 2018. During this period, very few earthquakes were recorded.

Following the slight deflation of the building observed in the days following the onset of the eruption of September 15, a resumption of inflation of the building seemed to take shape at the end of September. This inflation was confirmed throughout the month of October.

The source of pressure at the origin of this inflation could be located 1-1.5 km deep under the crater Dolomieu, attesting to a pressure of the superficial magmatic reservoir.

Piton de La Fournaise - Horizontal displacements recorded at the permanent GPS stations of the OVPF in the Enclos Fouqué and its periphery in October 2018 (© OVPF - IPGP).

Piton de La Fournaise - Horizontal displacements recorded at the permanent GPS stations of the OVPF in the Enclos Fouqué and its periphery in October 2018 (© OVPF - IPGP).

The surface activity was dominated by the installation of lava tunnel flows during the month of October.

In the balance sheet of this month: The month of October 2018 was marked by an inflation of the building and CO2 contents in the soil which remained high until mid-October, witnesses of magmatic transfers from the deep zones to more superficial zones and explaining the continuing eruption far away from this month of October.

The eruption ended on November 1, 2018 at 4:00 am local time.

Source: Monthly Bulletin of the Volcanological Observatory of Piton de la Fournaise

Find all the information related to the activity of Piton de la Fournaise on the website (http://www.ipgp.fr/fr/ovpf/actualites-ovpf), the Twitter account (https: // twitter. com / obsfournaise? lang = fr), and the Facebook account (https://www.facebook.com/ObsVolcanoPitonFournaise/) of the OVPF-IPGP.

The information in this document may not be used without explicit reference.

Piton de La Fournaise - 02.11.2018 - maintenance of the surveillance network. - photo © OVPF / IPGP.

Piton de La Fournaise - 02.11.2018 - maintenance of the surveillance network. - photo © OVPF / IPGP.

On Manam, in Papua New Guinea, the eruption started in August 2018, seems to have calmed down ... only remains a gas and steam emission from the two active vents.

Source: COD and Sentinel 2.

 Manam - 01.11.2018 - Sentinel2 image in natural colors. - one click to enlarge

Manam - 01.11.2018 - Sentinel2 image in natural colors. - one click to enlarge

Manam - 02.11.2018 - both vents emit steam and gas plumes as DCO team leave the island - DCO photo

Manam - 02.11.2018 - both vents emit steam and gas plumes as DCO team leave the island - DCO photo

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