[1]CHANG Yuqiao,XIE Yingqing,ZHANG Yanqi,et al.Seismic Activity and Seismic Tectonic Environment in Ludian Area[J].Journal of Seismological Research,2017,40(02):286-294.
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Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
40
Number of periods:
2017 02
Page number:
286-294
Column:
Public date:
2017-04-23
- Title:
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Seismic Activity and Seismic Tectonic Environment in Ludian Area
- Author(s):
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CHANG Yuqiao; XIE Yingqing; ZHANG Yanqi; LI Lei; WU Rongbang; YU Jiang; LUO Weidong
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(Administration of Yunnan Province,Kunming 650224,Yunnan,China)
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- Keywords:
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Ludian MS4.9 earthquake; Zhaotong-Ludian fault zone; focal mechanism solutions; earthquake type; seimogenic environment
- CLC:
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P315.22
- DOI:
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- Abstract:
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We analyzed characteristics of isoseismic lines,earthquake focal mechanism solutions and aftershocks distribution of the Ludian MS4.9 earthquake. Based on earthquake sequences and focal mechanism solutions,the characteristics of spatial distribution of earthquake type on Zhaotong-Ludian fault zone and its adjacent areas are investigated; Combining the results of field work and previous studies,the seismic tectonic environment is discussed. Main conclusions are drawn as follows:(1)Ludian MS4.9 earthquake may be related to the activity of the NE-trending Longshu fault;(2)Ludian MS4.9 earthquake may not be a strong aftershock of the Ludian MS6.5 earthquake occured on August 3,2014;(3)The characteristics of spatial distribution of earthquake type among Zhaotong-Ludian fault zone and its adjacent areas are apparently controlled by the regional faults,which creates a good seimogenic environment.