% of this region consists of ocean. Two domains of the
CORDEX project partially overlap in this region; the Arctic domain and the EURO domain.
However, neither of them covers the Iceland domain completely although both of them cover
the landmass of Iceland as seen in Figure 1. The general CORDEX grid has a resolution of
0.44° (EURO-44 and Arctic-44, which corresponds to circa 50 km
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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
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seismicity near to the eruption site in the morning of the 21st.
On the vertical section viewed from the south two velocity models are shown, the SIL-model (black lines) used for the automatic and daily manual location processes, and the improved South-Iceland model (P23, green lines) used in the relocation process. Thin lines show S-wave velocity and thick lines show P-wave velocity.
Eruption site
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for July, represented by the number 728 which equals 972,8 hPa. The number 728 can be seen just to the right and above Westman islands, Vestmannaeyjar, south of Iceland. Roughly parallel solid lines show air pressure with an interval of 1 hPa.
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than M4 are marked with red circles, those above M4 with black stars. The Húsavík- Flatey fault (right lateral transform zone) and other known fault systems are given with black lines.
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sequence which occurred 19-20 September 2012 as white dots and the present sequence 20-21 October as red dots. The M5.6 event is marked as a black star. Tectonic faults are shown as black lines.
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September 2012 as white dots, 20-21 October as red dots and 22-23 October as green dots (only M>2). The M5.6 event is marked as a black star. The blue circle shows the area of the cluster that was detected in the morning of 22 October. Tectonic faults are shown as black lines.
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as white dots, 20-26 October as red dots and 23-25 October as green dots. The M5.6 event is marked as a black star. The blue circle shows the area of the cluster that was detected 23-25 October further east of the main cluster. Tectonic faults are shown as black lines.
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stars, manually revised aftershocks are shown as red circles. The M5.5 mainshock is located on a north-south striking left lateral strike-slip fault (see red and white symbol). Earthquakes from 1992-2012 are shown as black dots (black lines are mapped faults). Click to enlarge.
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