Fig. 1: Dense seismic observation and detected events. | Nature Communications

Fig. 1: Dense seismic observation and detected events.

From: Strength dependency of frequency–magnitude distribution in earthquakes and implications for stress state criticality

Fig. 1: Dense seismic observation and detected events.

a Seismic station geometry for 2017 observation, deployed in Southwestern Honshu, Japan, as shown in the index map. Blue open circles and dots plotted on the topographic map indicate seismic stations and observed hypocentres. The red star shows the epicentre of the 2000 Western Tottori earthquake (Magnitude 7.3). A solid triangle indicates the Daisen volcano. Topographic map is referred from Geospatial Information Authority of Japan. (https://maps.gsi.go.jp/development/ichiran.html) b The lower hemisphere plot shows an example of a focal mechanism solution for an event on 21 October 2017. The polarity of the first P wave motion of the event is plotted in the lower hemisphere. Solid and open circles indicate positive and negative polarities, respectively.

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