Today (30-June-2016) three earthquakes took place in the root system of Eyjafjallajökull volcano I think. The most depth for those earthquakes was 14,3 km and the most shallow one 1,3 km. The largest magnitude was 1,1 the other two earthquakes had the magnitude of 0,7. Nothing to worry about magnitude wise.
The earthquake activity close to Eyjafjallajökull volcano (three yellow dots). Copyright of this image belongs to Iceland Met Office.
Eyjafjallajökull volcano extends to this area, however at this area there are no surface craters. If there where they are long lost due to erosion. Unlike many other volcanoes, Eyjafjallajökull volcano does not have an extensive fissure swarm extending outwards for it, that should limit the path the magma can travel in theory. While I am not expecting any type of eruption from Eyjafjallajökull volcano in near future. If this earthquake activity continues I might have to review that outlook. I don’t expect this earthquake activity to continue, since next eruption in Eyjafjallajökull volcano won’t happen (based on my model) until the year 2199 at the earliest.
It is also question of this earthquake activity belongs to Vestmannaeyjar volcano system. Over the past few years deep earthquakes have been taking place there at regular time. Not many, just one or two at the time.
Is there a bit of weather in Iceland at the moment Jon? I’m seeing odd patterns of elevated tremor on most – but not all – the stations in Iceland – everywhere from Krafla to Krýsuvík?
http://hraun.vedur.is/ja/drumplot/mapDRUM.php
Yes, there is a wind in Iceland. I don’t know if it is up to storm levels at the moment.
Some movements inside the Katla’s caldera.
http://en.vedur.is/photos/jarmyrj/160701_1505.png
Summer earthquake activity, nothing to worry about for now.
Ok Thanks Jon!
I have changed ISP, the new IP address is http://31.185.79.78/mrtg/ for those how watch my mrtg counter website.
Katla continues to grumble – I know Jon thinks these are summer quakes but some of them have been quite deep.
So called summer quakes or ice-quakes are not shown on the IMO pages as they themselves have confirmed. Unless you mean summer quakes as in isostatic rebound type quakes.
Btw, han anyone noticed an M1.9 at Oraefajokull at interesting 27.7km depth? I think this one is more newsworthy. 🙂
I did and indeed the depth suggests magma moving around and maybe entering the volcano?
There is a seasonal seismicity pattern in the Mýrdalsjökull area preferentially occurring during the autumn months due to reduced ice load and elevated pore fluid pressure in the underlying crust.
According to https://notendur.hi.is/palli/Einarsson%20and%20Brandsdottir%202000.pdf the phenomenon remains enigmatic in spite of the explanations given in that study.
@ I don’t expect this earthquake activity to continue, since next eruption in Eyjafjallajökull volcano won’t happen (based on my model) until the year 2199 at the earliest.
Personally I agree with Jon, according to my latest calculations based on what I heard at an Irisj pub in Paris it is more likely for Iceland to become European champion football beforehand.
All confirmed by IMO.
At least 10 below 9km
One below 14km
Another 8 at least between 2km -9km
These are deep quakes… I can’t image a little melt of the snow above can have effects this deep.
More recently, from ca. 2005 on, an intruding cryptodome in the Godabunga region (west of Katla) is introduced as an argument for the persisten eq’s there
http://earthice.hi.is/sites/jardvis.hi.is/files/Pdf_skjol/sturkell_etal_2009b.pdf (page 15).
However, you are referring to the recent eq’s more to the east outside the caldera I believe.
A star on the Loki Ridge, at around 5km depth. I would say this to be connected to Hamarinn, and might be some stress on the Loki ridge caused by inflating Hamarin .
Tuesday
05.07.2016 05:56:13 64.498 -17.458 5.0 km 3.4 99.0 13.6 km NW of Grímsfjall