Soufriere St.
Vincent (Saint Vincent and the Grenadines) - Report for 13 January-19 January 2021 - NEW

University of the West Indies Seismic Research Centre (UWI-SRC) and National Emergency Management Organisation (NEMO) reported that the lava dome in Soufrière St.
Vincent?s main crater continued to grow during 13-19 January.
Observations on 14 January revealed that the dome was growing taller as well as expanding to the E and W.
During an overflight on 15 January scientists saw extensive vegetation damage on the E, S, and W inner crater walls; damage previously noted along the upper part of the SW crater rim had expanded downslope.
The dome dimensions were estimated to be 340 m long, 160 m wide, and 90 m high.
Scientists visited the dome on 16 January and collected rock samples from the W part of the dome.
They recorded temperatures around 590 degrees Celsius from the expanding dome front.
Gas emissions were most notable from a small circular depression at the top of the dome.
At night during 15-17 January residents to the W saw incandescence emanating from the crater, a phenomenon likely to be more frequent as the dome grows higher.
Gas emissions were visible in the afternoon of 17 January rising from the top of the dome as well as from areas of contact between the new and old domes.
An area of burnt vegetation extended from the dome along the W part of the crater floor.
By the end of the week both new seismic and continuous GPS monitoring stations had been installed and were transmitting data, bring the total number of dedicated seismic stations to five.
The Alert Level remained at Orange (the second highest level on a four-color scale).

Sources: National Emergency Management Organisation (NEMO), Government of Saint Vincent and the Grenadines,University of the West Indies Seismic Research Centre (UWI-SRC)

Fonte/Source: Global Volcanism Program/Smithsonian Institution


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