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Progress in Earth and Planetary Science
Fig. 6 | Progress in Earth and Planetary Science

Fig. 6

From: Spatio-temporal changes in the seismic velocity induced by the 2011 Tohoku-Oki earthquake and slow slip event revealed from seismic interferometry, using ocean bottom seismometer’s records

Fig. 6

Variations in cross-correlation coefficient averages for each period at a lag time of zero between the 15-day ACFs and the reference ACF, using a 15-s time window from 2.5 to 17.5 s at each OBS. These figures show variations in the cross-correlation coefficient averages a from period I to period II, b from period II to period III, c from period III to period IV, d from period IV to period V, e from period V to period VI, and f from period VI to period VII. Details of these periods are presented in Table 2. A red upward triangle represents an increase in the cross-correlation coefficient, and a blue downward triangle represents a decrease

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