Benjamin A. Brooks Craig L. Glennie Jessica R. Murray John O. Langbein Susan E. Owen Thomas H. Heaton Robert A. Iannucci Darren L. Hauser Sarah E. Minson 2015 <p><span>Earthquake early warning (EEW) can reduce harm to people and infrastructure from earthquakes and tsunamis, but it has not been implemented in most high earthquake-risk regions because of prohibitive cost. Common consumer devices such as smartphones contain low-cost versions of the sensors used in EEW. Although less accurate than scientific-grade instruments, these sensors are globally ubiquitous. Through controlled tests of consumer devices, simulation of an&nbsp;</span><i>M</i>_w<span><span>&nbsp;</span>(moment magnitude) 7 earthquake on California’s Hayward fault, and real data from the<span>&nbsp;</span></span><i>M</i>_w<span><span>&nbsp;</span>9 Tohoku-oki earthquake, we demonstrate that EEW could be achieved via crowdsourcing.</span></p> application/pdf 10.1126/sciadv.1500036 en American Association for the Advancement of Science Crowdsourced earthquake early warning article