Textual Research on the July 7,1590 A. D. Southeastern Yongjing Earthquake in Gansu Province |
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| Authors: | Yuan Daoyang[ ] Lei Zhongsheng[ ] Zhang Junling[ ] Ge Weipeng[ ] Liu Xingwang[ ] LiuBaichi[ ] and Liang Mingjian[ ] |
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| Institution: | [1]Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China [2]Lanzhou Base of Institute of Earthquake .Science. CEA, Lanzhou 730000, China |
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| Abstract: | 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. |
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| Keywords: | 1590 A D southeastern Yongjing earthquake Historical earthquake research Seismogenic structure The north fringe fault zone of Maxian Mt |
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