Fernandina (Ecuador) - Report for 13 June-19 June 2018 - NEW

IG reported that a seismic swarm at Fernandina began at 0837 on 16 June.
Nine earthquakes stronger than M 2.5 were detected with the largest event, a M 4.1, located NE of the island at a depth of 4 km.
An eruption that began between 1100 and 1115 was confirmed by guides on a passing boat passing, and by thermal anomalies identified in satellite images.
The eruption occurred from a radial fissure on the NNE flank, producing gas plumes with low ash content that rose 2-3 km and drifted more than 250 km WNW.
Lava flows reached the sea within a few hours.
After two days of intense eruptive activity, tremor levels decreased significantly, thermal anomalies decreased (though continued to remain intense), and a significant drop in sulfur dioxide emissions was recorded.

Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)

Fonte/Source: Global Volcanism Program/Smithsonian Institution


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