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Earth of fire

Actualité volcanique, Article de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié par Bernard Duyck
Publié dans : #Actualités volcaniques
Sinabung - 03.12.2014 / 3:01 p.m. LT - progress status of the lava tongue - photo Oom Endro Lewa

Sinabung - 03.12.2014 / 3:01 p.m. LT - progress status of the lava tongue - photo Oom Endro Lewa

A point on the evolution of the eruption of Sinabung was done in the last detailed VSI report dated March 17, 2014 - for the period from 8 to 15.03.

At the seismicity level , the amplitude of tremor varies between 6 and 48 mm , with a dominant in the area 18-23 mm . Thirty-seven volcanic earthquakes ( VA ) were recorded between 8 and 15 March , and hybrid earthquakes related to fracturation and magma movements have disappeared ... The SO2 flux variations between 300 and 598 tonnes per day indicates a continued magma supply : the intrusion continues without fracturation.

Diagram of seismicity at Sinabung 03/13/2014 - doc . VSI

Diagram of seismicity at Sinabung 03/13/2014 - doc . VSI

Sinabung -  gas emissions 03.13.2014 - top, " Kubah lava " : reports the dome of lava - " Letusan " = eruption - the temperature of the hot springs ( Suhu air panas ) remains in slight increase - doc . VSI

Sinabung - gas emissions 03.13.2014 - top, " Kubah lava " : reports the dome of lava - " Letusan " = eruption - the temperature of the hot springs ( Suhu air panas ) remains in slight increase - doc . VSI

The instability of the lava dome /  lava tongue is rising, led by earthquakes associated with avalanches of blocks ( Guguran ), with an average of 223 per day.

Visual observation shows that the progression of the front of the tongue of lava is still valid ; on March 13 , it covered 2,421 meters from the top.

Sinabung - progression of the lava tongue - photo and annotations from VSI

Sinabung - progression of the lava tongue - photo and annotations from VSI

Source : VSI Badan Geologi / report : evolution of Sinabung between 8 and 15 March 2014.

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