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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: Seismic reflection imaging of deep crustal structures using local earthquakes in the Kanto region, Japan

Fig. 2

Data selection of the local earthquakes. a Epicenter distribution and b source depth distribution of the local earthquakes. The gray dots are all events listed on the unified catalog of the Japan Meteorological Agency (JMA) from April 1, 2017, to March 31, 2020. The black dots are 772 earthquakes with magnitudes greater than 2.5, and the colored dots are the 200 high-quality events. c Four examples of vertical component records. The numbers in brackets correspond to the yellow dots with numbers in (d). d Signal-to-noise ratio (S/N) of the seismic records after being sorted in ascending order of S/N. Histograms of (e) magnitude and (f) depth distribution of all 722 events (gray bars) and the 200 high-quality events (red bars)

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