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Fig. 8 | Earth, Planets and Space

Fig. 8

From: Noise classification for the unified earthquake catalog using ensemble learning: the enhanced image of seismic activity along the Japan Trench by the S-net seafloor network

Fig. 8

Epicentral distribution and focal mechanism distribution from Aomori to Fukushima prefectures. The colors indicate depth. a Epicentral distribution. We show only the epicenter of events determined using ≥ 10 stations. The automatically determined hypocenters of M ≥ 5 are indicated by stars. b Focal mechanism distribution. The focal mechanisms were CMT solutions with lower hemisphere of equal-area projection determined by JMA, except for the Mw 3.5 event which is a moment tensor solution determined by NIED. AM, IW, MY, and FK indicate Aomori, Iwate, Miyagi, and Fukushima prefectures. The depth contour lines of the Pacific Plate are shown in black in the JIVSM model (Koketsu et al. 2012). The arrows indicate the movement of the Pacific Plate relative to that of the Okhotsk Plate (DeMets et al. 2010). The purple dashed line in the maps indicates the forearc segment boundary according to Bassett et al. (2016)

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