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]
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 volcanReykjanes 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.
Source: GVP, Smithsonian Institute
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