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渭河断陷盆地及邻近地区的Q值速度场分布特征与地震活动性
Distributions of Q Value and Seismic Velocity and Seismicity Beneath Weihe Fault Depression and Its Adjacent Areas
【摘要】 利用西安数字遥测地震台网记录的数字地震资料,采用P波初动半周期方法,得到了渭河断陷盆地及邻近地区的Q值分布。结果表明,Q值分布与20km深度P波速度分布有较好的一致性,并与该区域的地震活动性密切相关。
【Abstract】 In this paper, by using the seismic data recorded by xi’an digital telemetry seismic network, from studying half period of first P arrivals,Q value distribution beneath Weihe fault depression basin and its adjacent area is determined. The results show that the distribution of Q value is comparatively consistent with the image of P-wave velocity distribution at depth h=20 km in the studied area ,and is closely related to seismicity in this region.
【关键词】 Q值;
数字化地震台网;
P波;
地震活动性;
【Key words】 Q value; Digital seismic network; P wave; Seismic activity;
【Key words】 Q value; Digital seismic network; P wave; Seismic activity;
【基金】 地震科学联合基金(95208);陕西省科技项目(95K12-G9)
- 【文献出处】 山西地震 ,Earthquake Research In Shanxi , 编辑部邮箱 ,2004年04期
- 【分类号】P315.9
- 【被引频次】1
- 【下载频次】74