Quoting: Anonymous Coward 27725993
i will say this. look at the energy release at Katla since 1999..
2.4e+15 joules, and climbing. that's 2.4 petajoules
[link to hraun.vedur.is
getting close to 600 kilotons of tnt equivalent, or about 38 Hiroshima bombs, which released 63 terrajoules of energy
63x10 to the power of 12 joules
multiply that by 38, and you get somewhere near where katla is now in terms of energy release from the quake activity since 1999, 2.4 petajoules. Imagine that. in 13 and a half years, 38 Hiroshima bombs 'exploding' under there
also, about 33% of the total energy release has happened since July 2011. that's about 12 Hiroshima equivalents. just under one a month.
67% of energy release in the 12 and a half years between January 1999 to July 2011, 33% in the 16 months since. we are DEFINITELY in the run up to this eruption.