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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
 Sinabung - eruptive episode of 08/14/2020 / 10:32 a.m. WIB - photo Magma Indonesia

 Sinabung - eruptive episode of 08/14/2020 / 10:32 a.m. WIB - photo Magma Indonesia

This Friday August 14, 2020 at 10:30 am WIB an ash plume was observed at ± 2100 m above the summit of Sinabung (± 4560 m above sea level). The ash column was gray, with moderate intensity to the southeast and south. This eruption was recorded on a seismograph with a maximum amplitude of 64 mm and a duration of 100 seconds.

Between 6 a.m. and 12 p.m. WIB, the seismicity consists of

- 1 eruption earthquake

- 5 blast earthquakes with an amplitude of 10 to 60 mm and the earthquake lasted 11 to 36 seconds.

- 1 episode of continuous tremor with an amplitude of 0.5 to 50 mm, dominant of 10 mm.

Sinabung - 08/14/2020 / 10:32 WIB - Ashes cover the surrounding countryside - photo Magma Indonesia

Sinabung - 08/14/2020 / 10:32 WIB - Ashes cover the surrounding countryside - photo Magma Indonesia

Sinabung - sismicité au 13.08.2020 - Doc. Magma Indonesia

Sinabung - sismicité au 13.08.2020 - Doc. Magma Indonesia

 Sinabung - eruptive episode of 08/13/2020 / 6:17 a.m. WIB - photo Magma Indonesia

Sinabung - eruptive episode of 08/13/2020 / 6:17 a.m. WIB - photo Magma Indonesia

The seven eruptive episodes of 08.13.2020, are detailed below by Armen Putra and Moh Nurul Asrori:

 

August 13, 2020, at 06:07 a.m. WIB: the height of the ash column is observed at ± 1000 m above the summit (± 3460 m above sea level). The ash column was gray with moderate intensity to the east, southeast and south. This eruption was recorded on a seismograph with a maximum amplitude of 15 mm and a duration of 719 seconds.

 

August 13, 2020, 08:02 WIB: The height of the ash column is observed at ± 1000 m above the peak (± 3460 m above sea level). The ash column was observed to be gray to black with moderate to thick intensity to the east and southeast. This eruption was recorded on a seismograph with a maximum amplitude of 18 mm and a duration of 496 seconds.

Sinabung - eruptive episode of 08/13/2020 / 8:43 a.m. WIB - photo Magma Indonesia

Sinabung - eruptive episode of 08/13/2020 / 8:43 a.m. WIB - photo Magma Indonesia

August 13, 2020, 08:31 WIB: The observed height of the ash column is ± 2000 m above the peak (± 4460 m above sea level). We observe that the ash column is gray to brown with moderate to thick intensity towards the east and southeast. This eruption was recorded on a seismograph with a maximum amplitude of 20 mm and a duration of 1035 seconds (17 min. 25 sec.)

 

August 13, 2020, 1:08 p.m. WIB: the height of the ash column is observed at ± 2000 m above the summit (± 4460 m above sea level). The ash column was gray with moderate to thick intensity to the east and southeast. This eruption was recorded on a seismograph with a maximum amplitude of 18 mm and a duration of 1247 seconds (nearly 21 min).

 Sinabung - eruptive episode of 08/13/2020 / 1:16 p.m. WIB - photo Magma Indonesia

Sinabung - eruptive episode of 08/13/2020 / 1:16 p.m. WIB - photo Magma Indonesia

The last three episodes could not be observed:

13 Agustus 2020, 3:41 p.m. WIB.

13 Agustus 2020, 8.15 p.m. WIB. No visual rash was observed. This eruption was recorded on a seismograph with a maximum amplitude of 70 mm and a duration of 3045 seconds (more than 50 min.).

13 Agustus 2020, 9:30 p.m. WIB.

 

The activity level remains at 3 / siaga.

- Communities and visitors / tourists not to conduct activities in villages that have been moved, as well as the location within a radial radius of 3 km from the summit of G. Sinabung, and a sector radius of 5 km for the south-east sector and 4 km for the east-north sector.

- In the event of ash rain, people are advised to wear masks when leaving the house to reduce the health effects of volcanic ash. Secure drinking water facilities and clean the roofs of houses from dense volcanic ash so that it does not collapse.

- Communities that live near rivers that originate at Mount Sinabung to remain alert to the dangers of lahars.

 

Source: Magma Indonesia

Taal - Thermal anomalies at 08/14/2020 / 5:10 a.m. - Doc. Mirova _MODIS_Latest10NTI

Taal - Thermal anomalies at 08/14/2020 / 5:10 a.m. - Doc. Mirova _MODIS_Latest10NTI

In the past 24 hours, the Taal Volcano network has recorded three (3) volcanic earthquakes. Weak activity of steam or fumaroles rising 20 meters high before drifting northeast was observed from the vents in the main crater.

Mirova reported thermal anomalies on August 12 / 5:40 p.m. for 10 MW VRP, and on August 14 / 5:10 a.m. for 794 MW VRP (centered to the east of Taal Lake, of undetermined cause).   To be continued !

 

Alert level 1 (abnormal) is maintained on the Taal volcano. DOST-PHIVOLCS reminds the public that at Alert Level 1, sudden steam or phreatic explosions, volcanic earthquakes, minor ash falls, and fatal accumulations or expulsions of volcanic gas can occur and threaten areas of Taal Volcano Island (TVI).

 

Sources: Phivolcs & Mirova

Ebeko - 08/14/2020 / 07h26 seen from Severo Kurilsk - VOKKIA © KB GS RAS

Ebeko - 08/14/2020 / 07h26 seen from Severo Kurilsk - VOKKIA © KB GS RAS

A moderate explosive eruption continues in the Kurils, at Ebeko volcano.

According to visual data from volcanologists in Severo-Kurilsk, explosions sent ash up to 3 km above sea level on August 7, 9, 11 and 13; clouds of ash drifted west, east and south of the volcano; ash falls were noted in Severo-Kurilsk on August 9.

Satellite data showed a thermal anomaly on the volcano on August 7 and 10; the volcano was calm or obscured by clouds the other days of the week.

Aviation hazard prognosis: Moderate eruptive activity of the volcano continues. Ash explosions up to 19,700 feet (6 km) above sea level could occur at any time. Ongoing activities could affect low-flying planes and Severo-Kurilsk airport.

The aviation code remains orange

 

Source: VOKKIA

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