Relocation of Small to Moderate Earthquakes in Shanxi Province
详细信息
- 责任者：Song Meiqin (National Scientific Field Observatory of Continental Rift Dynamics ; Shanxi Seismic Bureau ; Taiyuan 030021 ; China) ; Zheng Yong
- 刊名：Chinese Journal of Geophysics
- 出版年：2012
- 卷期：55(2)
- 关键词：地震构造 ; seismotectonics ; 山西 ; Shanxi Province
- 页码：p.513-525
- 图表：7 illus., 1 table, 45 refs.
- 分类号：0500
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
Based on the phase reports of analog seismic stations from 1981~2001,and those of digital seismographs from 2002~2008, the authors relocated the small to moderate earthquakes with unprecedented precision by absolute and relative relocating methods. The results show that: 1) comparing with precious researches,the percentage of relocated earthquakes with horizontal locating error ≤5 km increases from 65.8% to 86.2%; 2) the general pattern of seismicity has no big changes in horizontal directions; 3) the distribution of relocated earthquakes can outline the profile of the lower seismogenic boundaries of the basins; and 4) there is a good correlation between the focal depths and the structures of the basin and range system.
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