It is now quite clear how uneventful 2013 were for us volcano-lovers. Week after week we at Volcanocafé had to work hard to find something to write about, so we more and more explored out into long articles about volcanoes. In the end we started a series intended to cover entire North America so that we would be sure to have enough to write about. But, even though Kamchatka did its part 2013 was an eruption-dud.
2014 seems to become a much more intense year and for the first time I feel that I am not able to write about all the volcano news that is out there. It would take me weeks just to catch up, and that if is not yet another volcano starts an eruption or something else that is interesting.
So, here is a short recap of the most interesting activity right now and for the first time in a year or so that list does not contain Etna.
I did the most interesting part recently, the resurging caldera floor of Atitlán Caldera, but one should also remember that Pacaya, Fuego and Santiaguito (Santa Maria) are erupting. To top that off Amatitlán has had a few bradyseisms with large scale movements.
Aso seems to have started a cycle towards a new eruptive episode and over at the Aira caldera Sakurajima is still slowly increasing the strength of the short explosive eruptions. But let us not forget Nishinoshima that is happily growing into an ever larger island. Judging from the last confirmed eruption we might see an eruption that lasts for years. Since the Nishinoshima seamount is extensive and not that deep it might turn out to become quite a bit bigger than the old island.
Just from the amount of comments on Hawai’i one can understand that it is time to keep an eye on the active volcano there.
Herðubreið is one of the 3 most beautiful volcanoes on the planet and since a few years it seems to be slowly moving into an eruption. This is a whopper since it is believed to have been dormant since glaciation. It is currently suffering from yet another intrusion of magma from depth, and this time it seems to be moving rapidly at an angle from depth under Herðubreiðartögl towards the central volcano of Herðubreið.
It is not only Herðubreið of the age-long dormant volcanoes that is seemingly gearing up for an eruption. During the last few months we have seen very deep earthquake swarms under Kistufell, Trölladyngja and Urðarháls. The only volcano of these 3 to have had an eruption after glaciation is the least known, Urðarháls. These 3 volcanoes are on the same fissure swarm running north from Kistufell. What makes these deep earthquake swarms so interesting is that they conform to IMOs prediction of a pulse coming up via the mantleplume that has its center under Kistufell.
Now for yet another volcano that has not erupted since glaciation, Hagöngúr near Skrokkaldá. During the last 3 months there have been rapid localized inflation at the Skrokkaldá GPS and magmatic earthquakes as a shallow intrusion occurred.
Thankfully the more well known volcanoes of Iceland has taken a bit of a rest, the only more well known volcano that is doing something seems to be Askja that was ice-free on the last good satellite-image (mid December).
In the end
This was just a selection of erupting or otherwise newsworthy volcanoes. The list could almost have become endless… So instead, let us move on to the Friday riddles.
Remember that there is 3 volcanoes, one volcanologist and a volcanic term lurking among the riddles. Pyter is still in the lead for the second week in the row tightly followed by Dorkviking, Evan Chugg and Matt.
- Mount + Image – Kistufell, literally Coffin mountain (Sissel, 2pt)
- Pyroclastic horse feed – Maurice & Katia Krafft was killed by a pyroclastic flow and Krafft manufacturs race horse fodder (Kelda, 2pt)
- MHO2 – MOHO or Mohorovičić discontinuity (Evan Chugg, 2pt)
- Watered down Na2CO3·10H2O – Lake Natron (Cryphia, 2pt)
- Long lasting light of the Pacific – Izalco, known as the Lighthouse of the Pacific due to its 200 year long eruption (Inannamoon, 2pt)
|3 Evan Chugg