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TitleReal-time ground-motion analysis: distinguishing P and S arrivals in a noisy environment
AuthorRosenberger, A
SourceBulletin of the Seismological Society of America vol. 100, no. 3, 2010 p. 1252-1262,
Alt SeriesEarth Sciences Sector, Contribution Series 20090180
Mediapaper; on-line; digital
File formatpdf
Subjectsgeophysics; earthquakes; earthquake mechanisms; earthquake studies; p waves; s waves; seismic waves
Illustrationsgraphs; plots
ProgramReducing Risk Program Management, Public Safety Geoscience
AbstractParticle motion analysis by recursive singular value decomposition is used to distinguish basic seismic phases online from a stream of three-component data with sample-to-sample resolution. This article describes a real-time method for implementation on a three-component seismometer with limited computing resources. It is proposed that the use of instruments equipped with the suggested phase detecting capabilities would provide the basic components of an earthquake or a tsunami early warning system.