『理科年表』の「地震年代表」をめぐって－ 10 世紀まで－

This paper is based on the oral report I gave on July 22, 2023, at the 21st “Disaster Culture and the History of Community Formation” workshop hosted by the Okayama University Research Institute for the Dynamics of Civilizations. I discuss the changes in the “Chronology of Earthquakes” contained within the Rika nenpyō (Chronological Scientific Tables) and some of the problems with them, citing historical earthquake materials. It is necessary to clearly distinguish between real and false earthquakes, such as the Tamba earthquake (701), the Kinai earthquake (734), the Minō earthquake (745), the Ecchū-Echigo earthquake (863), and the Kantō earthquake (878). The author hopes that the “Chronology of Earthquakes” will be published in a better form in the future and calls for efforts in the field of history to verify and introduce historical earthquake materials.