3 ms·
Back in 1999/2000 I had a friend in Castro Valley call me in the morning to ask me if I was feeling the earthquake - I said nope, and then 5 seconds later - it
by ghshephard 12y ago
Back in 1999/2000 I had a friend in Castro Valley call me in the morning to ask me if I was feeling the earthquake - I said nope, and then 5 seconds later - it hit me in Sunnyvale.
That's another way of earthquake advance warning - taking advantage of the latency between the epicenter and the surrounding area.
- miguelrochefort 12y agoThis is exactly what the system does...
- ghshephard 12y agoI realized that after reading the threads, and some related articles. I don't really understand why anybody felt a need to "announce" that the early warning system, "Worked" - I would presume that it has always been the case (at least since tele-connected seismometers were invented) that there has been an early warning of every earthquake from sites that were remote to where the sensors were. Presumably this is Earthquake Monitoring/Alert systems 101. (And, in Japan they've greatly advanced the signaling to the public)