内蒙古中西部地区尾波Q值研究

地震 ›› 2007, Vol. 27 ›› Issue (2): 72-80.

内蒙古中西部地区尾波Q值研究

刘芳¹, 苗春兰², 高艳玲²

1.内蒙古自治区地震局, 呼和浩特 010051;
2.中国地震台网中心, 北京 100036

收稿日期:2006-11-02 修回日期:2007-01-19 出版日期:2007-04-30 发布日期:2021-10-29
作者简介:刘芳(1963-), 女, 辽宁大连人, 高级工程师, 主要从事地震监测、数字地震资料应用及地震编目等研究。

Study of code Q value in Midwest region of inner Mongolia

LIU Fang¹, MIAO Chun-lan², GAO Yan-ling²

1. Earthquake Administration of Inner Mongolia Autonomous Region, Hohhot 010051;
2. China Earthquake Networks Center, CEA, Beijing 100036, China

Received:2006-11-02 Revised:2007-01-19 Online:2007-04-30 Published:2021-10-29

摘要/Abstract

摘要： 基于Sato单次散射模型, 利用2001-2006年6月内蒙古数字地震台网记录到的发生在内蒙古中西部地区的114条M_L≥2.7地震波形资料, 从西到东分三个研究区对内蒙古中西部地区尾波Q值进行了研究, 研究中首先计算各条记录尾波4～18 Hz间15个频率点的尾波Q值, 并对Q值与频率之间的依赖关系进行了拟合, 拟合结果为: Ⅰ区Q_c(f)=(69.98±20.92)f^{(0.8989±0.0881)}; Ⅱ区Q_c(f)=(55.59±14.726)f^{(0.9426±0.1084)}; Ⅲ区Q_c(f)=(69.89±18.54)f^{(0.8352±0.0913)}。研究结果表明, 尾波值表现出明显的分区性特征, 研究区Ⅰ、 Ⅲ表现为高Q值, 研究区Ⅱ为低Q值, 其结果可能与内蒙古中西部地区独特的构造分区特征有关。

关键词: 尾波Q_c值, Sato模型, 内蒙古中西部地区

Abstract: According to Sato single scattering model and using 114 earthquakes with M_L≥2.7 in Midwestern region of Inner Mongolia recorded by Inner Mongolia digital network from 2001 to June 2006, the coda quality factors of the three regions have been studied from west to east in Midwestern region of Inner Mongolia. Above all the code quality factors of every earthquake from 4 Hz to 18 Hz with 15 frequency points is calculated; the relation between Q value and frequency is fitted, the results show that region Ⅰ is Q_c(f)=(69.98±20.92)f^{(0.8989±0.0881)}, region Ⅱis Q_c(f)=(55.59±14.726)f^{(0.9426±0.1084)}, region Ⅲ is Q_c(f)=(69.89±18.54)f^{(0.8352±0.0913)}. The research shows that there are obvious zoning characteristics, regionⅠand Ⅲ is high Q value; region Ⅱ is low Q value, this result shows that there is definite relation between particular structural type zoning and code Q value.

Key words: Code Q value, Sate model, Midwest region of Inner Mongolia

中图分类号:

P315.3

刘芳, 苗春兰, 高艳玲. 内蒙古中西部地区尾波Q值研究[J]. 地震, 2007, 27(2): 72-80.

LIU Fang, MIAO Chun-lan, GAO Yan-ling. Study of code Q value in Midwest region of inner Mongolia[J]. EARTHQUAKE, 2007, 27(2): 72-80.

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