Seismic activity in Shikoku (shallow events)

On the 23rd, there was a shallow M4.0 event at a depth of 10 km in southern Tokushima Prefecture. The focal mechanism had a pressure axis in an ENE-WSW direction. Also, on the 26th, there was a shallow M4.1 event at a depth of 11 km in central Kochi Prefecture. The focal mechanism had an east-west pressure axis.

Japan Meteorological Agency