title: Crowdsourced earthquake early warning.
abstract: 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 M w (moment magnitude) 7 earthquake on California's Hayward fault, and real data from the M w 9 Tohoku-oki earthquake, we demonstrate that EEW could be achieved via crowdsourcing.
authors.affiliation: U.S. Geological Survey, Menlo Park, CA 94025, USA. ; California Institute of Technology, Pasadena, CA 91106, USA.
authors.forename: Sarah E
authors.initials: SE
authors.lastname: Minson
authors.affiliation: U.S. Geological Survey, Menlo Park, CA 94025, USA.
authors.forename: Benjamin A
authors.initials: BA
authors.lastname: Brooks
authors.affiliation: National Center for Airborne Laser Mapping, University of Houston, Houston, TX 77204, USA.
authors.forename: Craig L
authors.initials: CL
authors.lastname: Glennie
authors.affiliation: U.S. Geological Survey, Menlo Park, CA 94025, USA.
authors.forename: Jessica R
authors.initials: JR
authors.lastname: Murray
authors.affiliation: U.S. Geological Survey, Menlo Park, CA 94025, USA.
authors.forename: John O
authors.initials: JO
authors.lastname: Langbein
authors.affiliation: Jet Propulsion Laboratory, La Cañada Flintridge, Pasadena, CA 91109, USA.
authors.forename: Susan E
authors.initials: SE
authors.lastname: Owen
authors.affiliation: California Institute of Technology, Pasadena, CA 91106, USA.
authors.forename: Thomas H
authors.initials: TH
authors.lastname: Heaton
authors.affiliation: Carnegie Mellon University-Silicon Valley, Moffett Field, CA 94035, USA.
authors.forename: Robert A
authors.initials: RA
authors.lastname: Iannucci
authors.affiliation: National Center for Airborne Laser Mapping, University of Houston, Houston, TX 77204, USA.
authors.forename: Darren L
authors.initials: DL
authors.lastname: Hauser
keywords: Crowd-Sourcing; Earthquake Early Warning; Earthquakes; Geodesy; Natural Disasters; Seismology; Tsunami