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Earthquakes in southern Iceland during the past 48 hours
Monday, Apr 14, 2014
A shallow (around 8 km depth) earthquake swarm including two quakes at 2.7 and 2.9 magnitude has started in an area 12 km to the south of Hekla volcano. ... [more]
Strain and earthquakes under Hekla volcano (Iceland Met Office)
Thursday, Mar 27, 2014
The volcano remains restless, but without any indication of an impending eruption (however, it is notorious for not giving much warning either). ... [more]

Hekla volcano

stratovolcano 1491 m (4,892 ft)
Iceland, 63.99°N / -19.67°W
Current status: restless (2 out of 5)
Hekla webcams / live data
Last update: 14 Apr 2014
Typical eruption style: Explosive and effusive.
Hekla volcano eruptions: 1104 (large, Plinian eruption), 1158, 1206, 1222, 1300, 1341, 1389, 1440(?), 1510, 1554, 1597, 1636-37, 1693, 1725, 1766-68, 1845-46, 1878, 1913, 1947-48, 1970, 1980, 1981, 1991, 2000 Hekla in eruption in March 2000 with the large black lava flow in the foreground from that eruption.
Last earthquakes nearby:
TimeMag. / DepthDistanceLocation
Tue, 22 Jul
Tue, 22 Jul 13:03 UTCM 0.8 / 4.8 km5 km4.3 km E of Goðabunga
Tue, 22 Jul 02:53 UTCM 0.5 / 0.1 km5 km6.3 km ENE of Goðabunga
Tue, 22 Jul 01:05 UTCM 0.8 / 18.2 km9 km9.2 km WNW of Hekla
Tue, 22 Jul 00:48 UTCM 1.0 / 5.5 km8 km12.8 km NNW of Álftavatn
Mon, 21 Jul
Mon, 21 Jul 20:49 UTCM 1.3 / 5 km13 km4.2 km NW of Goðabunga
View all recent quakes
1491-m-high Hekla is one of Iceland's most prominent, most known and active volcanoes. It has frequent eruptions that start with an explosive onset producing eruption plumes, then lava fountains and culminate in large lava flows. Most of the volcano's flanks are covered by extensive lava flows from historical eruptions, dating back to 1104 AD. Hekla seen from the air in March 2000, with the active fissure and the recent lava flows visible

Background:

Hekla is located near the southern end of the eastern rift zone. It sits on a rift-transform junction, and has produced basaltic andesites, in contrast to the tholeiitic basalts typical of Icelandic rift zone volcanoes. Hekla's tephras are generally rich in flourine, which is very hazardous to grazing animals.
The elongated shape of the volcano is caused by a 5.5-km-long fissure, Heklugjá, that cuts across the volcano and is often active along its full length during major eruptions. Repeated such eruptions, oblique to most rifting structures in the eastern volcanic zone, have created Hekla's elongated ENE-WSW profile.
Frequent large explosive eruptions during historical times have deposited tephra throughout Iceland and provide important time markers that can be used to date eruptions from other volcanoes in Iceland.

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