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Crowdsourced earthquake early warning.

Sarah E Minson1, Benjamin A Brooks2, Craig L Glennie3

  • 1U.S. Geological Survey, Menlo Park, CA 94025, USA. ; California Institute of Technology, Pasadena, CA 91106, USA.

Science Advances
|November 25, 2015
PubMed
Summary
This summary is machine-generated.

Crowdsourced earthquake early warning (EEW) is possible using smartphone sensors. This approach could make EEW accessible in high-risk areas, reducing earthquake and tsunami damage.

Keywords:
Crowd-SourcingEarthquake Early WarningEarthquakesGeodesyNatural DisastersSeismologyTsunami

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Area of Science:

  • Geophysics
  • Seismology
  • Sensor Technology

Background:

  • Earthquake early warning (EEW) systems mitigate earthquake and tsunami impacts but are costly, limiting their deployment in high-risk regions.
  • Consumer electronics, like smartphones, possess sensors that, while less accurate than scientific instruments, are widely available globally.

Purpose of the Study:

  • To investigate the feasibility of utilizing crowdsourced data from common consumer devices for earthquake early warning (EEW).
  • To assess if ubiquitous, low-cost sensors in devices like smartphones can form the basis of an effective EEW system.

Main Methods:

  • Controlled laboratory tests were conducted on consumer-grade sensors.
  • Simulations of a moment magnitude (M w) 7 earthquake on California's Hayward fault were performed.
  • Real-world data from the M w 9 Tohoku-oki earthquake were analyzed.

Main Results:

  • Consumer devices demonstrated potential for detecting seismic activity.
  • Simulated and real-world earthquake data indicated that crowdsourced sensor networks can provide valuable early warning information.
  • The study confirms the viability of using widespread, inexpensive sensors for EEW.

Conclusions:

  • Earthquake early warning (EEW) can be achieved through crowdsourcing, leveraging the sensors in common consumer devices.
  • This innovative approach offers a cost-effective solution for implementing EEW in regions previously lacking this critical technology.
  • Widespread adoption of crowdsourced EEW could significantly enhance public safety and infrastructure resilience against seismic events.