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Sao Jorge volcano (Azores) - Smithsonian / USGS Weekly Volcanic Activity Report for 13 July-19 July 2022 (Continuing Activity)

Wed, 20 Jul 2022, 14:00
14:00 PM | BY: VN
A seismic swarm at São Jorge began at 1605 on 19 March along a WNW-ESE fissure system stretching from Ponta dos Rosais to Norte Pequeno - Silveira. The seismic data as well as deformation data indicated a magmatic intrusion, though by early April no significant deformation was detected. The frequency of earthquakes had decreased in late May-early June, leading CIVISA to lower the Alert Level to V3 (on a scale of V0-V6) on 8 June.
Seismicity continued to be elevated; by 18 July a total of 43,410 low-magnitude tectonic events had been recorded.

Source: Centro de Informação e Vigilância Sismovulcânica dos Açores (CIVISA)
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From: Global Volcanism Program, 2022. Report on Sao Jorge. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 13 July-19 July 2022. Smithsonian Institution and US Geological Survey.

Previous news

Thu, 14 Jul 2022, 10:00

Sao Jorge volcano (Azores) - Smithsonian / USGS Weekly Volcanic Activity Report for 13 July-19 July 2022 (Continuing Activity)

A seismic swarm at São Jorge began at 1605 on 19 March along a WNW-ESE fissure system stretching from Ponta dos Rosais to Norte Pequeno - Silveira. The seismic data as well as deformation data indicated a magmatic intrusion, though by early April no significant deformation was detected. The frequency of earthquakes had decreased in late May-early June, leading CIVISA to lower the Alert Level to V3 (on a scale of V0-V6) on 8 June. ... Read all
Fri, 8 Apr 2022, 06:56

São Jorge volcano update: Seismic activity and inflation continue at lower levels

Depth of quakes over time under Sao Jorge volcano
The seismic swarm under the island's northwestern rift zone has decreased a lot during the past days, but it is still ongoing at lower levels. ... Read all
Show more
São Jorge volcano
fissure vents 1053 m
Azores Islands, Portugal, 38.66°N / -28.11°W
Current status: restless (2 out of 5) São Jorge volcano eruptions:
1580, 1808
Typical eruption style
Effusive
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