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本文提出了利用事件量级匹配原则确定地震震级的方法,对海原、小江、得荣、伊斯兰堡-加德满都、台湾岛-菲律宾群岛和琉球群岛-台湾岛地震区的回溯性分析表明该方法可行.基于孕震断层多锁固段脆性破裂理论,修订了1.0版《欧亚地震带板内地震区划分图》和《欧亚地震带板间地震区划分图》,剔除了原洛扎-林芝、于田、比什凯克、科什阿加赤和日本海地震区,新增加了伦敦与贝斯尼地震区,新编制的2.0版地震区划分图地震区总数为14个.此次地震区分区方案调整以区域性大断裂为地震区主控边界,使得各地震区分区方案更为合理.从孕育周期界定与主震事件判识角度,采用新发展的最小有效性震级确定方法,界定各地震区孕育周期、判识其主震事件并分析其未来震情,得到比之前分析更好的结果.
This paper presents a method to determine the magnitude of an earthquake using the principle of event magnitude matching, and the retrospective analysis of the seismic zones of Haiyuan, Xiaojiang, Derong, Islamabad, Kathmandu, Taiwan Island - Philippine Islands and Ryukyu Islands - Taiwan Island shows that this method is feasible. The theory of multi-lock brittle fracture in the seismogenic fault has been revised. The revised version of “Eurasian Seismic Zone Intra-plate Seismic Zoning Map” and the “Eurasian Seismic Zone Inter-plate Seismic Zoning Map” are revised in version 1.0, excluding the former LuoZha-Nyingchi Field, Bishkek, Kashgar and Japan Sea seismic areas, the new London and Bethny Earthquake areas, the new version of the 2.0 earthquake zone map of the total number of seismic zones 14. The earthquake zone program Adjusting the regional main fault to be the main controlling boundary of the earthquake area makes the scheme of each subregion more reasonable.Using the method of determining the minimum effective magnitude of new development from the point of identifying the incubation period and the main event, Gestation period, to identify the main shock events and analyze its future earthquake situation, get better results than the previous analysis.