La Palma volcano eruption update: lava flows continue to advance towards the sea in the Las Hoyas area
Wed, 8 Dec 2021, 17:56 | BY: T
Lava flows descending the cliff onto the coastal flat at Las Hoyas (image: Government of La Palma/ opendatalapalma.es)
Time vs depth of quakes under La Palma during the past days
Lava effusion remains stable, concentrated from vents near (or beneath) the cone, where they enter tubes, to break out as surface flows further downslope, mainly in the central part of the flow field, where lava flows continued to initially travel through a narrow and the widening channel, before spreading into various arms. One of them is now covering the lava flows that had erupted from the fissure vents west of Montaña Cogote. The latter have practically ceased to be active.
Active lava flows have continued to descend the steep cliff onto the the coastal flat of Las Hoyas, but without reaching the sea itself. Thick smoke was rising from burning plantations in the area this morning.
An increase in sulphur dioxide (SO2) emissions was reported today. Earthquakes have picked up a bit as well, especially in the deeper layer of 30-40 km depth. During the past 24 hours, there were 13 quakes of magnitude 3.0-3.6 and 27 quakes between 2.0 and 2.9.
Volcanic tremor remains low, at similar values as yesterday. No significant deformation has been recorded.
The following video by IGN shows the ground cracks on the flank of Montaña Cogote associated with the lavas that had erupted there last week (but now ceased):
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La Palma (Spain) - Smithsonian / USGS Weekly Volcanic Activity Report for 1 December-7 December 2021
The eruption at La Palma continued during 1-7 December, characterized by Strombolian explosions and lava fountaining/jetting from multiple existing and new vents, advancing and sometimes branching lava flows, and almost daily ash emissions. Seismicity persisted at variable but elevated levels, with earthquake locations distributed at depths of 10-15 km and 30-40 km. Seismicity was intense at both levels during 30 November-2 December, though the intensity at deeper levels began to wane; in general, earthquake activity was low by the end of the week. ... Read all
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