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A Kantō earthquake (関東地震 kantō jishin) is a megathrust earthquake occurring in the Kantō region of Japan that originate from slippage in the Sagami Trough. Kantō earthquakes are thought to occur with a 200-year return period.
Only two earthquakes in the Kantō region are thought to be megathrust earthquakes:
Other earthquakes in the Kantō region, which may or may not be due to slippage in the Sagami Trough: