The 679 Tsukushi earthquake was a major earthquake that occurred in northern Kyushu during the late Asuka period (Hakuho period). It is described in the Nihon Shoki and is the oldest historical earthquake in Japan whose epicenter is roughly known.
In the Nihon Shoki, descriptions of earthquakes frequently appear around the time of the earthquake. Approximately six years after this earthquake, a massive earthquake along the Nankai Trough, occurred.
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Text from the Wikipedia article “679 Tsukushi earthquake”, available under CC BY-SA 4.0.