How many of you know, I am (also) of earthquakes, and for many years. I am a founder and national coordinator of the Italian Experimental Seismic Network ( www.iesn.org ). I have registered in recent decades, thousands on my seismographic instruments. The seismographic monitoring station of Canelli, run by me, however, is currently in phase shift (I'll tell you when it becomes operational, if you're interested).
The video above on the quake of magnitude 8.9 on the Richter scale is very impressive ... in duration and effects. Without going into technical details, I just point out to you how you can clearly distinguish the arrival of the P and S waves (in order of volume) is eminently vibrating and then be followed by waves L (surface waves) to eminently wave.
impressive. And think that Japan is the country in the world with the most advanced measures antisimiche (one of all ... when the sensors detect the P waves .. removed automatically and in a split second to the current speed trains, using the braking of trains)
not mess with earthquakes. We say only that hurry up ... talking in terms of the event in Tokyo today released over 30 thousand (30,000!) times the kinetic energy developed in the recent earthquake in L'Aquila.
Do you think that macroseismic effects (ie damage) would cause a shock like that in our country.
all for today .. but if anyone interested, we can sometimes speak a little earthquakes, which never hurts ..
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