|
|||||
|
|
| 1830年磁县7．5级地震震源区尾波衰减特征 | |
| 引用本文： | 宋晓煜,张小涛,韩胜,边鹏飞.1830年磁县7．5级地震震源区尾波衰减特征[J].华北地震科学,2009,27(4):22-25. |
| 作者姓名： | 宋晓煜 张小涛 韩胜 边鹏飞 |
| 作者单位： | 1. 河北省地震局张家口中心台,河北,张家口,075000 2. 河北省地震局邯郸中心台,河北,邯郸,056001 3. 山西省地震局大同地震台,山西,大同,037004 4. 河北省地震局,河北,石家庄,050021 |
| 基金项目： | 本文采用朱新运、刘杰研制的尾波分析软件进行计算,在此表示衷心感谢! |
| 摘 要： | 利用磁县数字地震台记录到的近震波形资料，采用Aki尾波单次散射模型，计算1830年磁县7．5级大地震震源区50km范围内的尾波Qc值；经多地震拟合得出在尾波流逝时间为20s时，Qc=（70．2±29．3）f^（0.8054±0.1615）;40s，时Qc=（96．6±25．3），f^（0.7772±0.1098）。结果表明，磁县震源区Q0值较低，震区地震波衰减比邢台、唐山震区快；η值表明Qc值对频率的依赖性弱于邢台和唐山震区。 |
| 关 键 词： | Aki单次散射模型 尾波Qc值 磁县震区 |
The Coda Wave Attenuation Characteristics in 1830 Cixian,M7.5 Earthquake Area |
|
| SONG Xiao-yu,ZHANG Xiao-tao,HAN Sheng,BIAN Peng-fei.The Coda Wave Attenuation Characteristics in 1830 Cixian,M7.5 Earthquake Area[J].North China Earthquake Sciences,2009,27(4):22-25. | |
| Authors: | SONG Xiao-yu ZHANG Xiao-tao HAN Sheng BIAN Peng-fei |
| Institution: | SONG Xiao-yu1,ZHANG Xiao-tao2,HAN Sheng3,BIAN Peng-fei4(1.Zhangjiakou Central Seismostation,Zhangjiakou 075000,China,2.Handan Central Seismostation,Handan 056001,3.Datong Central Seismostation,Datong 037004,4.Central Seismostation of Shijiazhuang,Shijiazhuang 050021,China) |
| Abstract: | Based on digital waveform data of local earthquakes, using coda Aki single scattering model the coda Qc value of stations around 50 km in 1830 CiXian, M7.5 earthquake region are calculated through seismic casualties fitting. The result indicate that when lapse time is 20 s, the coda Qc is： Qc = （70.2 ± 29.3） f^（0.865 4±0.161 5） ; when the lapse is 40 s,the coda Qc is： Qc = （96.6 ± 25.3）f^（0.777 2±0.109 8）. The results show that Qc value of coda is lower and the attenuation of seismic waves in Cixian＇seismic area are faster than that in Xingtai, Tangshan Earthquake area; 77 values show that the dependence of Qc value to frequency is weaker than that in the Xingtai and Tangshan earthquake area. |
| Keywords: | Aki singles scattering model Qc value of coda wave Cixian seismic area |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |