Piton de la Fournaise volcano (Reunion Island, France) - Smithsonian / USGS Weekly Volcanic Activity Report for 4 February-10 February 2015 (New Activity / Unrest)

Wed, 4 Feb 2015, 06:00
06:00 AM | BY: VN
OVPDLF reported that 180 earthquakes at Piton de la Fournaise were recorded from 0400 to 0900 on 4 February, including five events greater than M 2. A seismic crisis began at 0910, tremor was recorded at 1050, and an eruption began at 1100. Observers noted that a fissure had opened on the S flank, triggering an Alert Level 2-2 (ongoing eruption) and the restriction of access by the public to the summit area.
The fissure was 500 m long, starting from an area located 100 m outside and to the W of Bory Crater. Activity was concentrated on the southernmost part of the fissure. Lava was ejected from the vent about 10 m high and rapidly flowed SSW towards the Rivals Crater, branched, and spread in an area S and SE of the crater.
By the late afternoon the farthest-reaching branch had traveled past Cornu Crater. Tremor levels decreased through the day and were relatively low by 1800; on 6 February tremor levels were very low. Small cones had formed over the vents and produced low gas plumes.
Inclement weather reduced visibility of the eruption site, although on 8 February observers noted that lava continued to flow from the vents, and another flow traveled further W. On 9 February a vent was weakly active with small explosions and small splashes of lava. Tremor remained stable and low on 10 February.

Source: Observatoire Volcanologique du Piton de la Fournaise (OVPF)
From: Global Volcanism Program, 2015. Report on Piton de la Fournaise. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 4 February-10 February 2015. Smithsonian Institution and US Geological Survey.

Previous news

Thu, 4 Dec 2014, 10:01
A new eruption could be under way at the volcano. An increase in seismic activity, inflation of the volcanic edifice, and SO2 gas mixed into the degassing plume, typical for a fresh magma intrusion at shallow depth have been detected by the volcano observatory (OVPF). ... Read all
Wed, 5 Nov 2014, 06:06
Seismic activity under La Réunion in 2014; the black dot represents the recent earthquakes under Piton de la Fournaise volcano (image: OVPF)
There are signs that a new eruption could be on its way: an increasing number of shallow earthquakes has been registered under the volcano recently. Read all
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