Bristol Island volcano (UK): details of lava flows emplaced during the April-July 2016 eruption

Wed, 14 Sep 2016, 12:05
12:05 PM | BY: T
Lava flow field on Bristol Island on 22 Sep 2016 (image: Landsat 8 / annotated by Culture Volcan)
Lava flow field on Bristol Island on 22 Sep 2016 (image: Landsat 8 / annotated by Culture Volcan)
Lava flow field on Bristol Island during its eruption on 1 May 2016 (image: Landsat 8 / annotated by Culture Volcan)
Lava flow field on Bristol Island during its eruption on 1 May 2016 (image: Landsat 8 / annotated by Culture Volcan)
The latest eruption of the volcano during April - late July 2016 could only be observed from space. An analysis of images taken before, during and after the eruption allows to see a vast field of fresh lava flows.
The lava flows were erupted from the Mount Surabaya cone, the volcano's most active vent, and covered a large area of the western half of the rectangular-shaped island.
The area occupied by the flows can be estimated to be about 1.7 million square meters, while their thickness remains unknown, and hence, a precise volume estimation is not possible. Visible on satellite images as well are steam vents at the contacts of the hot lava field with the ice and elongated crevasses in the ice sheet west and around the lava flows, created by melt-water draining underneath the ice.
It is unclear whether the lava flows are emplaced on the bedrock (melting the ice sheet away while progressing) or whether they were emplaced on top of the ice (which can be the case if the ice is thick and the flow progresses quickly) and later slowly settles into it.

Previous news

Mon, 8 Aug 2016, 16:21
Satellite image of Bristol Island volcano yesterday
The eruption on the remote island seems to have come to and end or paused. Read all
Thu, 21 Jul 2016, 15:59
Ash emissions from Bristol island on 19 July 2016 (image: Terra/MODIS/NASA via South Sandwich Islands Volcano Monitoring Blog)
The eruption on the remote island continues. Recent satellite images show increased ash emissions as well as two dark stripes that likely are newly erupted lava flows to the west and northwest from Mount Sourabaya volcano. ... Read all
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