Warning When You Need It: Earthquakes and Smartphones
summary
Demonstrates a working West Coast warning pipeline (ShakeAlert proven technology) plus a research-grade phone sensor network (MyShake smartphone network) that uses a 2-second on-phone classifier with about 93% classifier accuracy in tests. Simulations suggest ~300 phones per 100×100 km to detect events; real rollout hits 60k downloads (40k installed, ~11k daily online), phones trigger ~4 false alarms/day each, and the network records quakes down to M2.5 and logged 700 triggers (600 uploads, ~100 usable waveforms) on a recent M5.2. Funding and a public system are imminent.
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chapters (16)
- 0:00Richard Allen
- 2:24Recap for Earthquake Safety
- 5:11Earthquake Early Warning
- 5:23What Is Earthquake Early Warning
- 8:58P Waves and S Waves
- 13:30Who Would Use Earthquake Early Warning
- 15:36Nationwide Public Earthquake Early Warning System
- 16:00How Will You Get Earthquake Early Warning
- 24:25Challenges
- 40:27Largest Global Seismic Network
- 45:05Acceleration Trace
- 46:03Induced Earthquakes
- 50:39Peak Amplitude
- 51:36Triggering on Earthquake Signals
- 53:35Funding a Public Early Warning System
- 58:52Do You Hope To Learn Something about Seismology
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