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Earth, Planets and Space
Fig. 1 | Earth, Planets and Space

Fig. 1

From: Distinct rupture processes on a fault where M6-class earthquakes reoccurred in a short period: analysis of the 2011 and 2016 Northern Ibaraki, Japan, earthquakes using near-field waveforms

Fig. 1

Map of the target area of this study. The upper right inset shows the surrounding area of Honshu, Japan; the red frame indicates the area of the main map, and the blue area corresponds to the fault of the 2011 Tohoku-Oki earthquake. The red and blue stars in the main map represent the epicenters of the 2011 and 2016 events, respectively, and the centroid moment tensor (CMT) solutions by F-net are plotted using the corresponding colors. The strong motion stations used in the inversion analysis are shown as inverted triangles for KiK-net and squares for K-NET. The fault planes of the target events are depicted by purple dashed and solid lines. Aftershocks within 48 h of each event are plotted as red and blue dots for the 2011 and 2016 events, respectively (Kato et al. 2017). The right figure shows a depth cross-section of the hypocenters in the rectangular area bounded by a thin grey line on the main map

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