Map of earthquakes over the last 48 hours in Iceland.
I had to go to the link to find out that the color coding is according to elapsed time since the earthquake was recorded, rather than the magnitude of the quake.
I don’t know enough Icelandic to understand the Y axis on the lower plot at that link. It doesn’t look like Richter magnitude (3 is quite mild, and none of these earthquakes even rates a 3 on whatever scale they are using). What are they plotting there?
This seems to be an english version of the map, or a close approximation thereunto: http://hraun.vedur.is/ja/englishweb/index.html
It’s a badly drawn left turn arrow for alien space craft.
The clump of points on the south coast is Katla – not abnormal activity, though there was apparently a small glacial flood there last month or so.
The line is one of the main branches of the mid-Atlantic rift, there is another branch angling more south towards Katla.
The spread off the north coast is a rift zone.
Never seen the ridge light up like that.
Re Eric Lund @1
The y-axis is indeed magnitude, but using the more up-to-date Moment Magnitude scale rather than richter. See
I very much enjoyed the coverage at Erik Klemetti’s blog of the eyjafjallajokull thingy a while back, and this site (well, the english version http://en.vedur.is/earthquakes-and-volcanism/earthquakes/) was were most of the data under discussion was from.
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