At Cape Muroto , KÅ chi , a cliff was raised up about 2.3 m in 1707 , but just 1.5 m in 1854 . In the Kawachi Plain area , the earthquake was around 6 -- 7 on the JMA scale . The uplift at Cape Muroto , KÅ chi is estimated at 2.3 m in 1707 compared to 1.5 m in 1854 , the presence of an area of seismic intensity of 6 -- 7 on the JMA scale in Kawachi Plain , the degree of damage and inundations heights for the corresponding tsunami and records of tsunami at distant locations , such as Nagasaki and Jeju-do , South Korea .