Textual Research on the July 7,1590 A.D. Southeastern Yongjing Earthquake in Gansu Province

According to historical records, in July of 1590 A. D., a destructive earthquake occurred near people and domestic animals were killed". In the same month, Binggou town in eastern Qinghai Province (now northeastern Ledu county), was also damaged by an earthquake. These two earthquakes were listed as two different cases in the published earthquake catalogues, recorded separately as the Lintao MsS.5 earthquake with epicentral intensity Ⅶ in Gansu Province and the Ledu Ms5.0 earthquake with epicentral intensity Ⅵ in Qinghai Province. However, based on comprehensive analysis of research on historical records and field investigations, it is concluded in this paper that these two earthquakes could be the same one with magnitude 6.5 and epicentral intensity Ⅷ～Ⅸ. Its epicenter was in the Maxiun Mt., which is located in southeastern Yongjing and its seismogenic structure might be the mid-western segments of the north fringe fault zone of Maxian Mt. of Lanzhou.

作 者： Yuan Daoyang Lei Zhongsheng Zhang Junling Ge Weipeng Liu Xingwang Liu Baichi Liang Mingjian   作者單位： Lanzhou Institute of Seismology,CEA,Lanzhou 730000,China;Lanzhou Base of Institute of Earthquake Science, CEA, Lanzhou 730000, China  刊 名： 中國地震研究(英文版)  英文刊名： EARTHQUAKE RESEARCH IN CHINA  年，卷(期)： 2009 23(1)  分類號： P3  關鍵詞： 1590 A.D. southeastern Yongjing earthquake   Historical earthquake research   Seismogenic structure   The north fringe fault zone of Maxian Mt.