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Comment: Re:How do they know it works? (Score 2) 152

by pyroclast (#35304012) Attached to: For California, an Earthquake Early Warning System Is Up and Running
From QuakeGuard technical page: "The QuakeGuard technology detects the non-destructive P-waves while filtering other sources of vibrations that can lead to false alarms. The elimination of false warnings is a result of QuakeGuard's patented DSP algorithms that filter detected vibrations to isolate the signature waveforms of a seismic event that has just occurred. Depending on the geological composition of the terrain and the distance from the epicenter of the seismic event, a warning of 10 to 60 seconds is possible."

Comment: Re:Other uses for this technology (Score 5, Informative) 169

by pyroclast (#32171828) Attached to: Lidar Finds Overgrown Maya Pyramids

Seems like it might be useful for finding downed aircrafts and other missing objects....maybe even people?

Great thought, but the time to process lidar data takes a while. So planes and objects sure, but even the logistics to get this done takes time. Not sure about people, due to resolution over a vast area and again logistics. The bare-earth relief (which strips away a degree of vegetation) lidar offers is incredible. Cartographers and geologist have only recently really taken advantage of the technology. But in time and $, these other uses could definitely be considered, especially when resolution and processing is more developed.

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