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Iceland: M4 earthquake and swarms on Reykjanes Peninsula and Kolbeinsey Ridge
Earthquakes on and around Iceland on 30 Aug - the Kolbeinsey Ridge is the area with the yellow dots to the north (map: Icelandic Met Office)
vendredi, août 31, 2012
Yesterday, there was a lot of earthquake activity on Iceland. At noon, a swarm with about 50 quakes partly preceded and followed a magnitude 4.2 quake at 5.8 km depth beneath the Reykjanes peninsula, near the axis of the the SW volcanic rift zone. Most quakes were between magnitudes 1-2 and at around 5 km depth. ... [details]
Earthquake swarm on Reykjanes Ridge 70 km offshore SW Iceland indicates possible magma intrusion
Location of the seismic swarm on 8 Feb 2012 (Icelandic Met Office)
mercredi, févr. 08, 2012
Un essaim sismique a eu lieu sur la Reykjanes Ridge 70 km au large, la pointe sud-ouest de l'Islande. Environ 40 séismes de magnitudes principalement entre 2 et 3 ont été enregistrés. La crête de Reykjanes fait partie de la zone de rift SW active qui traverse la partie occidentale de l'Islande. ... [details]

Reykjanes volcan

Rangées Cratère 230 m / 755 ft
Reykjanes peninsula (SW Iceland), 63.89°N / -22.52°W
Condition actuelle: en sommeil (1 sur 5)
Dernière mise à jour: 31 août 2012
Style éruptif tipique: Effusive (lava flows)
Eruptions du volcan Reykjanes: 1211, 1226
Derniers séismes proches:
TimeMag. / DepthDistanceLocation
Sat, 8 Jun
Sat, 8 Jun 23:27 UTCM 0.5 / 2.7 km9 km2.9 km SSE of Fagradalsfjall
Sat, 8 Jun 17:33 UTCM 0.7 / 3.5 km3 km1.8 km NW of Krýsuvík
Sat, 8 Jun 17:33 UTCM 0.4 / 4.5 km5 km0.6 km W of Krýsuvík
Fri, 7 Jun
Fri, 7 Jun 06:41 UTCM -0.4 / 1.1 km1 km4.5 km N of Krýsuvík
Fri, 7 Jun 05:02 UTCM 0.3 / 9.5 km3 km5.5 km S of Helgafell
Voir tous
Reykjanes volcano in SW Iceland is located where the Mid Atlantic Ridge emerges onto land. It forms a vast area with many eruptive fissures, lava fields, hot springs and mud pools. In 2000, a large earthquake lowered the water level in Lake Kleifarvatn by 5 metres, but has gradually returned to normal since then.

Introduction:

The Reykjanes volcanic system at the SW tip of the Reykjanes Peninsula, where the Mid Atlantic Ridge rises above sea level, comprises a broad area of postglacial basaltic crater rows and small shield volcanoes.
The Reykjanes volcanic system is the westernmost of a series of four closely-spaced fissure systems that extend diagonally across the Reykjanes Peninsula. Most of the volcanic system is covered by Holocene lavas and eruptions have occurred in historical time during the 13th century at several locations on the NE-SW-trending fissure system.
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Source: GVP, Smithsonian Institute



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