In 2006 I started recording earthquakes in Iceland for the first time. At the time I was living in Hvammstangi, Iceland (currently I am doing so now, but that won’t be for much longer). The first hardware that I got was a short period seismometer with amplifier and digitizer (turns analog signals into digital signals). That hardware continues to be in used today at Heklubyggð geophone station. The second hardware that I got also included three long period channels for seismometers like Lehman seismometer. I don’t know if I ever get any of this type of seismometers since I’ve been developing my standard over the last 10 years. I do plan on buying Volksmeter II seismometer when I’m back in Denmark and have the money to buy them. One for N-S direction and a second one for E-W direction. Vertical is not a option for this type of seismometer. Unlike the geophone I currently use, this are long period devices and they go down to 0.1Hz, giving me a excellent option in monitoring earthquakes at long range and down to magnitude 4,0 at the distance of 400 km (at the most).
I don’t know for sure how many earthquakes I’ve recorded over the past 10 years, but the numbers are somewhere over 10.000 – 20.000 earthquakes. In this time I’ve recorded earthquakes from two eruptions (Eyjafjallajökull (2010) and Bárðarbunga volcanoes (2014 – 2015). I did not record many earthquakes from Grímsfjall volcano eruption in 2011 or the minor eruption in Katla volcano in 2011 (that was an eruption in my view, even if the official word is that no such event happened).
The largest earthquake I’ve recorded since 2006 was the magnitude 9,0 earthquake in Japan in 2012. The second largest earthquake was a magnitude 8,3 close to Alaska, I don’t recall exact location. I’ve seen all types of earthquakes, all types of earthquake swarms over the past 10 years on my instruments.
Next 10 years
While I’m going to continue to record earthquakes. I don’t know how long I can continue to record earthquakes in Iceland. Since doing so is a difficult task and effort when it comes keeping everything up and running. Having 3G connection also costs me a little big of money each month. Changes also happen and with time it is going to be impossible for me to keep the two remaining geophones going in Iceland. At the peak of my network I had four active geophones, now I’m down to two geophones in Iceland. I’m going to turn on one geophone in Denmark once I move back there. In few years time I hope to add the Volksmeter II seismometers to my measuring tools in Denmark.
I’m going to continue to record earthquakes, even if I stop recording earthquakes in Iceland due to changes that I have no control over. Changes happens and I don’t know what next 10 years are going to have in store.
Currently my main earthquake computer is off-line and it’s going to remain off-line until I move back to Denmark. It has been off-line since I haven’t been able to get an apartment for the 1 year + 2 months I’ve been living in Iceland at the moment.