Another M3 earthquake last night (M3.0 05:45UTC 180km NW
of OK city), a quick review of what our tiny geophone has picked up in the past couple of weeks.
Looking at some of these all on the same scale we start to see some patterns ... most of these earthquakes are happeneing 100-200km away, at these distances seismic signals start to have a distinct pattern with P and S waves arriving a different times ... the delay being because P waves travel faster than S waves ... at 150km this gives a delay of about 20 seconds ...
of OK city), a quick review of what our tiny geophone has picked up in the past couple of weeks.
Looking at some of these all on the same scale we start to see some patterns ... most of these earthquakes are happeneing 100-200km away, at these distances seismic signals start to have a distinct pattern with P and S waves arriving a different times ... the delay being because P waves travel faster than S waves ... at 150km this gives a delay of about 20 seconds ...
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