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中国大陆自有文字记载以来曾发生多次M≥8大震。本文依据前人的研究资料,再次整理8级大震数量及各个大震地表破裂参数与等震线参数新的研究成果。研究表明,中国大陆共发生19次M≥8大震,其中华北构造区6次,新疆构造区3次,青藏构造区10次。与前人资料相对比,增加了849年内蒙包头8级地震,且对1303年山西洪洞地震等8次地震的地表破裂长度与破裂位移有了新的研究成果。对19次8级大震的地表破裂参数与极震区等震线参数之间的关系进行讨论,研究地震地表破裂与震源信息的关系。对比表明,地震断层活动方式不同的断裂之间,或是同属同一活动方式、但展布在不同地域,其地震地表破裂参数均有较大差异,相对应的极震区等震线参数均有较大差异。
M ≥ 8 earthquake occurred many times since mainland China recorded its own language. Based on the previous research data, the paper again arranges the new research results about the magnitude of 8 earthquakes and the parameters of surface rupture and the parameters of isoseismicity under various large earthquakes. The study shows that a total of 19 M≥8 earthquakes occurred in mainland China, including 6 in the North China tectonic zone, 3 in the Xinjiang tectonic zone and 10 in the Qinghai-Tibet tectonic zone. Compared with the previous data, an 8 magnitude 8-magnitude earthquake in Baotou, Inner Mongolia was added and new research results were obtained on the length of surface rupture and the displacement of rupture of 8 earthquakes such as the 1303 Hongtong earthquake in Shanxi Province. The relationship between the surface rupture parameters of 19 M8 magnitude earthquakes and the parameters of the isochronal seismogenic anomalies is discussed, and the relationship between the surface rupture of the earthquake and the source information is studied. The comparison shows that there are great differences in the rupture parameters of the earthquakes between the fractures with different faulting patterns or in the same activity pattern, Big difference.