Stromboli volcano (Eolian Islands, Italy): (re)new(ed) lava flow
Mon, 25 Aug 2014, 23:22 | IS
View onto the upper part of the lava flow early on the 10th of August, showing the trajectory of the lava from the vent down onto and across the plateau before it flows down the Sciara del Fuoco. Only the vent at the origin and the overflow from the plateau are visible from the 400 m webcams.
Evolution of the lava flow's effusion rate and channels down the upper part of the Sciara del Fuoco over the last 2 days
Whilst on the afternoon of the 23rd of August lava was still flowing down from the plateau in much the same location as it had done since opening of the vent on the 7th of August, the overflow of lava from the ca 600 m plateau onto the Sciara del Fuoco had substantially decreased by the early hours of the 24th of August.
As the hours passed by, the old lava flow dried up and started to cool down despite the fact that effusion from the vent at ca. 650 m seemed to continue. By midday of the 24th, the volume of lava issuing from the vent had even increased - as shown by the thermal webcam image which indicated two, instead of one, branches. Video:
Yet no lava was visibly flowing down the upper part of the Sciara del Fuoco. So where was it stored all this time? A photograph taken on the 10th of August from the upper part of the lava flow, as it emerges from the vent and flows down onto the plateau, suggests that the newly emitted lava needed time break through and flow around the older, and partially cooled, lava channels atop the plateau.
This would explain why only in the early hours of the 25th of August lava is again observed to 'fall'down from the plateau - but at a different location towards the east. As the vent continued to issue lava at high rates, this new lava flow grew quickly and firmly replaced the upper Sciara del Fuoco pathway taken by the lava during the previous days.
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Previous news
Sun, 24 Aug 2014, 08:49
Stromboli volcano (Eolian Islands, Italy): fluctuating lava flow
The lava flow continues to be active, but the effusion rate has been more and more unstable and fluctuates a lot. This results in lava flows taking different (often overlapping) paths on the upper portion of the Sciara del Fuoco. ... Read all
Thu, 21 Aug 2014, 16:26
Stromboli volcano (Eolian Islands, Italy): strongly fluctuating effusion rates at lava flow on the Sciara del Fuoco
Lava continues to flow from the fissure vent at the base of the NE crater. Compared to the first week, the effusion rate has become more unstable, causing several surges and intervals of strongly decreasing activity. ... Read all
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