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地震 ›› 2004, Vol. 24 ›› Issue (1): 163-169.

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应用多台法测定华北地区地壳的平均波速比

黎明晓, 张晓东   

  1. 中国地震局分析预报中心, 北京 100036
  • 出版日期:2004-01-31 发布日期:2021-11-29
  • 作者简介:黎明晓(1978-), 女, 辽宁庄河人, 2001年在读硕士研究生, 主要从事数字化地震波资料的应用等研究。
  • 基金资助:
    “十五”国家科技攻关项目(2001BA601B01-01-05-07)

Determining average seismic velocity ratios (VS/VS) in the curst in North China region by multi-station method

LI Ming-xiao, ZHANG Xiao-dong   

  1. Center for Analysis and Prediction, CSB, Beijing 100036, China
  • Online:2004-01-31 Published:2021-11-29

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摘要： 将华北地区(N37.7°～41.7°, E114°～120°)按1°×1°分成24个区, 采用单事件多台站观测方法计算了21个区的波速比平均值, 并给出各自的相关系数。 结果显示, 在平面分布上波速比与岩性、 温度、 应变有着一定的联系。 文中还对多台法的二套公式作了进一步研究, 阐述了它们来源的理论差异, 计算结果验证了它们随时间的变化趋势是一致的。 所采用的数据量越大, 两者的计算结果吻合得越好。

关键词: 平均波速比(VP/VS), 多台法, 华北地区

Abstract: North China region (N37.7°~41.7°, E114°~120°) is divided into 24 sections, in which each section has the range of 1°×1° in this paper. Using the multi-station methods we calculated the velocity ratio and correlation coefficients of 21 sections. According to the consequence, there is certain relationship between seismic velocity ratio, rock property, temperature and strain in the two-dimensional distribution. At the same time, we studied the two formulas of multi-station method. Although there is difference in the theoretical deduction, the two formulas have consistent consequence and the trend is both consistent with time. The more accurate data we use, the more consistent the consequence is.

Key words: Average velocity ratio, Multi-station method, North China region

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