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São Jorge volcan

Mise à jour: 5 déc.. 2022 15:49 GMT -
fissure vents 1053 m
Azores Islands, Portugal, 38.66°N / -28.11°W
Condition actuelle: en vigilance - niveau agité (2 sur 5)
Last update: 20 juil. 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.

Montrer carte interactive
Style éruptif tipique: Effusive
Eruptions du volcan São Jorge: 1580, 1808

Derniers séismes proches

HeureMag. / ProfondeurDistance/Lieu
samedi, 3 décembre 2022 GMT (2 séismes)
3 déc. 2022 13:34 (GMT -1) (3 déc.. 2022 14:34 GMT)
2.5

9 km
5.2 km (3.2 mi)
São Jorge, 4 km à l'est de Velas, Azores, Portugal
3 déc. 2022 00:42 (GMT -1) (3 déc.. 2022 01:42 GMT)
2.1
7.7 km (4.8 mi)
São Jorge, 2.5 km au nord-est de Velas, Azores, Portugal
dimanche, 27 novembre 2022 GMT (2 séismes)
27 nov. 2022 10:09 (GMT -1) (27 nov.. 2022 11:09 GMT)
1.7
8.8 km (5.5 mi)
Portugal: S. Jorge
27 nov. 2022 08:05 (GMT -1) (27 nov.. 2022 09:05 GMT)
1.8
8.5 km (5.3 mi)
São Jorge, 1.5 km au nord-est de Velas, Azores, Portugal
samedi, 26 novembre 2022 GMT (1 séisme)
26 nov. 2022 12:33 (GMT -1) (26 nov.. 2022 13:33 GMT)
2.5

9 km
9.9 km (6.2 mi)
São Jorge, 1.4 km au nord de Velas, Azores, Portugal

Introduction

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.
----------------------
Source: Smithsonian GVP


See also: Sentinel hub | Landsat 8 | NASA FIRMS
mer., 20 juil. 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
jeu., 14 juil. 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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