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Fig. 4 | Earth, Planets and Space

Fig. 4

From: Spatial variation in shear wave splitting of the upper crust in the zone of inland high strain rate, central Japan

Fig. 4

An example of waveform data and splitting analysis at station DP.KHK. (a) Original waveforms of band-pass filtered two horizontal components. Dashed lines show the time window for particle motion and splitting analysis. (b) Particle motion of two horizontal components. (c) Rotated waveforms of faster shear wave (upper) and slower one (lower). (d) Contour map of the confidence level by the method of Silver and Chan (1991). Plus shows the optimum splitting parameters of δt and ϕ. A contour interval corresponds to the confidence level of two times of the standard error.

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