“There’s no keeping up with the volcanic activity on el Hierro!” says reader Hans Schreuder.
“This is the news today, Tuesday 3 July 2012,” says Hans, a retired analytical chemist.
“The island has now been elevated by 9 cm due to the magma pressure. Last night there was one quake of 4.4 on the Richter scale, at a depth of 18km, which was also felt on the neighbouring island of La Palma.”
“The energy released by today’s activity has been calculated at 1,4 billion joule.”
“So far today there have been 94 tremors and since the beginning of the current tremor period on 24 June there have been 1,505 tremors of which 234 were greater than 2.4 on the Richter scale.”
“There has not been a significant change in the emission of carbon dioxide, sulphur dioxide or radon on the north-side of the island where the chemical sensors are located.”
Thanks to Hans Schreuder for these links
Not only a retired analytical chemist, Hans is also publisher of http://www.ilovemycarbondioxide.com/