A dog sensed the coming earthquake in Eureka California last Saturday. It measured 6.5 on the Richter scale which is considerable less powerful than the quake that hit Haiti which was a 7.0 magnitude event.
Sophie the dog, sensed the earthquake moments before any signs of it appeared. This video is from the office of the Times Standard newspaper in Eureka.
Another view
A 6.5 quake is significantly weaker than a 7.o quake. The Haiti quake would have 3.2 times the ground movement and 5.5 times the energy of the Eureka quake.
As I understood the Richter scale, each 0.1 increment is equal to ten times the magnitude of the previous measure. Thus, a 7.0 scale event would be more powerful than a 6.5 by 50 times.
Geologists and Seismologists out there, am I right? Or am I “chatting pup”, as the kids round here say.
Maffu, I got my quake magnitude info here (about halfway down the page). I know it’s a substantial difference every tenth of a point up the scale.
Maffu, you’re off by a factor of ten. Each *point* (not a tenth of a point) is ten times more powerful than the last.
http://en.wikipedia.org/wiki/Richter_magnitude_scale
The other night I read about service dogs for epileptics that can sense epileptic seizures hours before they happen. I don’t understand how this works, but it fascinates me.
What creeps me out would be working in an office where they record everything.
@paul
my boss wants to start doing that for the line workers. But cant find a camera that can handle the humidity levels.