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Fig. 4 | Earth, Planets and Space

Fig. 4

From: Real-time crustal monitoring system of Japanese Islands based on spatio-temporal seismic velocity variation

Fig. 4

Flowchart for detection and removal of unstable temporal velocity variations (outliers). Input data consist of the stretching coefficient C(E) and the temporal velocity changes E for each pair of stations. Given the threshold of C(E) and the tolerance coefficient TC of MAD, we can estimate the range of acceptable velocity variations by using Eqs. 5 and 6. If C(E) is outside that range, the velocity change is rejected. The final step is applying a median filter to obtain stable E values

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