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São Jorge vulcano

Aggiornato: 4 feb. 2023 16:52 GMT -
fissure vents 1053 m
Azores Islands, Portugal, 38.66°N / -28.11°W
Stato attuale: inquieto (2 di 5)
Last update: 20 lug 2022 (Smithsonian / USGS Weekly Volcanic Activity Report)
Aerial view of the volcanic ridge with aligned cinder cones in March 2022 (image: Eva K)
Aerial view of the volcanic ridge with aligned cinder cones in March 2022 (image: Eva K)

The linear São Jorge (San Jorge) Island is 54 km long and only 6 km wide. It was formed by fissure eruptions beginning in the eastern part of the island.

Mostra la mappa interattiva
Stile eruttivo tipico: Effusive
Eruzioni del vulcano São Jorge: 1580, 1808

Latest nearby earthquakes

Data / oraMag. / Prof.Distanza/Ubicazione
sabato, 4 febbraio 2023 GMT (1 sismo)
4 feb 2023 04:20 (GMT -1) (4 feb 2023 05:20 GMT)
1.9

8 km
8.5 km (5.3 mi)
São Jorge Island, 1.3 km a nord est da Velas, Azores, Portogallo
venerdì, 27 gennaio 2023 GMT (1 sismo)
27 gen 2023 00:20 (GMT -1) (27 gen 2023 01:20 GMT)
2.0

5 km
10.5 km (6.5 mi)
São Jorge Island, 3.1 km a nord da Velas, Azores, Portogallo
lunedì, 23 gennaio 2023 GMT (3 sismi)
23 gen 2023 20:18 (GMT -1) (23 gen 2023 21:18 GMT)
2.0

8 km
9.3 km (5.8 mi)
São Jorge Island, 0.5 km a nord da Velas, Azores, Portogallo
23 gen 2023 05:19 (GMT -1) (23 gen 2023 06:19 GMT)
2.4
35 km (22 mi)
Pico Island, 12 km a sud-est da Madalena, Azores, Portogallo
23 gen 2023 04:17 (GMT -1) (23 gen 2023 05:17 GMT)
2.7
36 km (22 mi)
Pico Island, 15 km a sud-est da Madalena, Azores, Portogallo

Sfondo

The western two-thirds of dominantly basaltic San Jorge volcano contains youthful, fissure-fed lava flows resembling those on neighboring Pico Island. Subaerial lava flows issued from three locations above the south-central coast during 1580, producing lava flows that reached the sea.
In 1808 a series of explosions took place from vents along the south-central crest of the island; one of these fed a lava flow that also reached the southern coast. Submarine eruptions were reported on several occasions from vents off the southern and SW coasts.
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Source: Smithsonian GVP


See also: Sentinel hub | Landsat 8 | NASA FIRMS
Wed, 20 Jul 2022, 14:00

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
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
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