The 1290 Ningcheng earthquake is a significant historical event that occurred in the eastern part of Inner Mongolia.Over the years,there has been little consensus on the extent of the damage and the specific earthquake parameters.In 1960,the China Earthquake Catalogue,edited by Li Shanbang,provided the first estimation of the earthquake's basic parameters,identifying the epicenter as being west of Ningcheng,with a magnitude of 6 3/4 and an intensity of Ⅸ.Twenty years later,influenced by the Yuan History:Biography of Zhao Mengfu,which noted that"hundreds of thousands were injured or killed"by the earthquake,foreign experts speculated that the earthquake either"killed 100 000 people"or had a magnitude significantly above 7.After 1983,seismologists in Inner Mongolia conducted in-depth investigations and studies on the earthquake,including analyses of historical documents and archaeologi-cal examinations of ancient pagodas and quake-related relics.The findings,published in the China Earthquake Yearbook and Acta Seismologica Sinica,corroborated Li Shanbang's identification of the earthquake parameters.This paper reviews previous research findings and their discrepancies,offering a new historical verification of the 1290 Ningcheng earthquake and further clarifying the characteristics of its seismic impact.
Ningcheng earthquake in Yuan Dynastydebatescasualtiesnew findings and field investigation