Stromboli volcano (Italy) activity update: rather weak explosions at the surface, internal unrest elevated
Wed, 3 Feb 2021, 17:0417:04 PM | BY: T
One of the stronger explosions of the NE vent of Stromboli volcano last night (image: INGV webcam)
The visual activity at the volcano remains at typical low to moderate levels, characterized by weak to moderate strombolian explosions mainly from the NE vent, as well as spattering and puffing from other vents in the crater terrace.
Current volcanic activity index according to LGS
Internal activity parameters are elevated, resulting in an overall HIGH volcanic activity index on the scale developed by the Experimental Geophysical Laboratory of the University of Florence (LGS):
As of 3 Feb, similar to the previous days, degassing and explosive activity have been low to medium. The number of explosions recorded at the NE vent was 26 during 24 hours, or little more than one per hour, with rather low ejection velocities (18 m/s) of volcanic material.
On the other hand, internal unrest identified by volcanic tremor and volcanic quakes has been showing high values, suggesting that the relative calm of activity at the surface might change quickly.
Links / Sources:
Links / Sources:
Sun, 24 Jan 2021, 14:06
Friday's lava flow on the Sciara del Fuoco did not stay active very long as the effusive activity from the base of the NE vent that had fed the flow dropped again. ... read all
Fri, 22 Jan 2021, 19:08
A new lava flow is active on the Sciara del Fuoco. ... read all
Tue, 19 Jan 2021, 16:48
A short phase of elevated activity occurred at the volcano last night. A small surge of magma apparently resulted in a series of lava flows from the northern vents onto the upper Sciara del Fuoco, generating beautiful incandescent rockfalls on the steep slope. None of the flows reached more than about 100-200 m length and none remained active very long. ... read all
Mon, 16 Nov 2020, 09:53
Another stronger-than-usual explosion occurred at the volcano minutes ago at 10:17 local time our correspondents on the island informed us. ... read all
Tue, 10 Nov 2020, 20:29
A stronger than usual explosion happened at the volcano minutes ago, our local friends reported. ... read all