Kantō earthquakes

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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:

• 1923 Great Kantō earthquake; most common usage
• 1703 Genroku earthquake

Other earthquakes in the Kantō region, which may or may not be due to slippage in the Sagami Trough:

• The Ruijū Kokushi mentions an earthquake that struck the area in 818
• 1855 Edo earthquake

See also[]

• South Kantō earthquakes
• List of earthquakes in Japan
• Nankai megathrust earthquakes
• Seismicity of the Sanriku coast
• Tōkai earthquakes