Although the 2,265 volcano-tectonic earthquakes at Planchon-Peteroa as reported yesterday by Georges Vitton (Le Chaudron de Vulcain) is perhaps the more interesting news, our readers are probably more interested in the large earthquake swarms in Tjörnes Fracture Zone. What is happening? Is it an eruption, is an eruption imminent or can an eruption be expected…
I am a man blessed with two home countries, one is my native geologically stable Sweden and the other is my new home country of Guatemala. The latter is being highly geologically active to the point that it is to be considered as a geological high risk zone. We all know that this is a…
It must be the only volcano named after a British ambassador to Spain. Mount St Helens was also known as the Mount Fuji of America: a perfect cone standing above the country side. The 1980 eruption destroyed much and had a significant human cost. It also damaged the mountain badly: the perfect cone gone, and…
At one time, Portugal ruled the world. Its explorers discovered the Cape of Good Hope, created colonies around the Indian Ocean, reached China and Japan, founded the city of Nagasaki, and claimed much of South America. The glory days of the Portuguese empire lasted from 1415 to 1750, and left a rich heritage in Portugal.…
This is a reposted article from November 21, 2011 As a biologist I feel I really must reply to the Blog on behalf of the sheep. I don’t know how many biologists read these Volcanic blogs and I wonder if geologists and physicists have a true concept of the science of Biology. I decided to…
Few of our readers have missed the anomalous M6.2 earthquake that occured 20 km WNW of the Aniakchak Caldera. In this article we will go through the details of the earthquake and the possible effects of the main-shock and the series of after-shocks. According to the Alaska Earthquake Center the waveform of the initial 6.2…
In this part of the series I will take a look at the risks of harvesting geothermal energy. Let me begin with stating that so far there has been no large accident caused by harvesting geothermal energy. On the other hand, there is no such thing as totally safe ways to harvest energy. We all…
Lately there have been a few earthquakes with a magnitude larger than M3 at the ring fault around the Bárdarbunga caldera. This has led to a lot of question about that particular volcano, and that is to be expected after a medium sized Icelandic eruption. They do tend to attract attention. This has been coupled…