ShakeAlarm.com

ShakeAlarm® is a cost-effective, highly reliable Earthquake Early Warning System (EEWS) which provides critical minutes or seconds of warning in order to minimize loss of life and assets. This is done by recognizing and quantifying the faster, but lower energy, P (compressive) wave which is the precursor of the more damaging S (shear) wave. When used in conjunction with industrial or civil infrast  ...