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- W1997691468 abstract "Abstract We report on a 4-year experiment of routine automatic determination of seismic moments using the mantle magnitude M m . We have developed a system performing automatic detection and location of distant earthquakes, on the basis of three-component broadband records at a single seismic station. This system, which has been operational since 1987 at Papeete, Tahiti, computes M m from the spectral amplitude of the mantle Rayleigh waves. Based on a dataset of 474 earthquakes, we show that M m provides a excellent estimate of the quantity log 10 M 0 − 20, where M 0 is the seismic moment in dyn-cm, as published subsequently by the Harvard and USGS groups. The average residual is 0.07 units of magnitude, and the standard deviation 0.22 units. This method, which necessitates minimal hardware, has powerful applications in the field of tsunami warning." @default.
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- W1997691468 date "1993-01-01" @default.
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- W1997691468 title "Four years of automated measurements of seismic moments at Papeete using the mantle magnitude Mm: 1987–1991" @default.
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- W1997691468 doi "https://doi.org/10.1016/0040-1951(93)90002-2" @default.
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