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Earth, Planets and Space
Fig. 10 | Earth, Planets and Space

Fig. 10

From: Monitoring the instrument response of the high-sensitivity seismograph network in Japan (Hi-net): effects of response changes on seismic interferometry analysis

Fig. 10

Examples of an apparent velocity change test. a An observed F-net record. b Simulated Hi-net waveforms, which are made by convoluting three types of instrument responses with parameters of f = 1 Hz and h = 0.7 (black line), f = 0.9 Hz and h = 0.6 (red), and f = 0.5 Hz and h = 0.3 (blue). c ACFs of the simulated Hi-net waveforms shown in (b)

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