activity and possible hazards
During the last millennium, Hekla has erupted 23 times, making it the third most active volcano in Iceland. Hekla's most recent eruption was in February 2000, when a 10 to 12-km-high plume of ash, gas and water vapour persisted for a couple of hours. The most recent major eruption of Hekla in 1947 created a volcanic plume that rose to about 30 km in the stratosphere
/about-imo/news/monitoring-hekla
et al.
3
2005
Seismic hazard in the Hengill area based on the SIL earthquake catalogue - First results (PDF)
Kristján Ágústsson, Páll Halldórsson
42
0,8
2005
A model of the release of the two June 2000 earthquakes based on all available observations (PDF)
Sigurlaug Hjaltadóttir, Kristín S. Vogfjörð, Þóra Árnadóttir, Páll Einarsson, Peter Suhadolc
8
8,2
2005
/earthquakes-and-volcanism/reports-and-publications/
The glacier margin in the year 2000 is shown with a red curve.
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and Reykjavík.
The fault on which the earthquake occurred is the same fault that gave rise to a magnitude 7 earthquake in August 1784.
Yesterday's earthquake was not preceded by foreshocks and only a few aftershocks have been detected. This is the largest earthquake in this area since 2000, and the largest in the South Iceland lowland region (South Iceland seismic zone) since 2008.
It is possible
/about-imo/news/nr/2888
1991 to 2000 are being analyzed. The period
includes two large earthquakes in year 2000, both of them of the magnitude 6.5. The analysis involves
improving earthquake locations in order to determine if in situ changes do exist in the area (down to
~0.5% significance level), with the ultimate goal of locating them at relatively high spatial resolution
(~10x10x3 km3). With such a high
/media/norsem/norsem_ingi.pdf
of the earthquake, M4, and the red dots smaller earthquakes. The violet lines show mapped seismic fissures in South Iceland (Páll Einarsson et al.) and the gray dots are well located earthquakes (processed) from 2000 (Sigurlaug Hjaltadóttir).
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at the Reykjanes peninsula during the period from January 2000 until June 2015. Blue lines represent known faults which have been active in Holocene or Recent Epoch, i.e. after the ice age (Páll Einarsson, 2015). Also shown in yellow are volcanic systems with fissure swarms (Páll Einarsson and Kristján Sæmundsson, 1987). Enlarge
/about-imo/news/bigimg/3150
in the
area occurred in the years of 1929, 1968 and 2000. The earthquakes in 1968 and
2000 were around magnitude M5.5, with epicenter north of lake Hlíðarvatn. The
epicenter of the 1929 earthquake was most likely further to the west, at
Brennisteinsfjöll mountains. The magnitude of that earthquake was around M6.2.
Smaller earthquakes, around M4, are recorded regularly in the area, for example
/about-imo/news/earthquakes-around-blafjoll-ski-are