Papers › "Shaking in 5 seconds!" A Voluntary Smartphone-based Earthquake Early Warning System
"Shaking in 5 seconds!" A Voluntary Smartphone-based Earthquake Early Warning System
Rémy Bossu, Francesco Finazzi, Robert Steed, Laure Fallou, István Bondár
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Public earthquake early warning systems have the potential to reduce individual risk by warning people of an incoming tremor but their development has been hampered by costly infrastructure. Furthermore, users' understanding of such a service and their reactions to warnings remains poorly studied. The smartphone app of the Earthquake Network initiative turns users' smartphones into motion detectors and provides the first example of purely smartphone-based earthquake early warnings, without the need for dedicated seismic station infrastructure and operating in multiple countries. We demonstrate here that early warnings have been emitted in multiple countries even for damaging shaking levels and so this offers an alternative in the many regions unlikely to be covered by conventional early warning systems in the foreseeable future. We also show that although warnings are understood and appreciated by users, notably to get psychologically prepared, only a fraction take protective actions such as "drop, cover and hold".
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