Primary Study on Coda Q Value in Longgang Volcano Area
详细信息
- 责任者：Liang Guojing (Volcanic Observatory of Longgang ; Fusong 134528 ; China) ; Li Zhongwei
- 刊名：Seismology and Geology
- 出版年：2011
- 卷期：33(1)
- 关键词：尾波 ; coda waves ; Q值 ; Q value ; 吉林 ; Jilin Province
- 页码：p.114-122
- 图表：5 illus., 2 tables, 18 refs.
- 分类号：0500
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
According to Sato (1977) single scattering model and using 41 earthquakes with ML≥1.6 in the Longgang volcano and the nearby regions, the coda Q value in the Longgang volcanic region was determined. The results show that the coda Q has a dependence with frequency as Q(f)=(41.65±11.74)f (0.845 9±0.164 2). Compared to other volcanic areas in the world, the average Qc of the Longgang volcanic area is obviously lower. Distribution of coda Q value on Longgang volcano shows that coda Q0 value at Jinchuan seismic station near Jinlongdingzi volcano is 31.98, significantly lower than that of other stations,which,in combination with the deep seismic sounding data and vertical deformation data, proves that the magma chambers probably locate in the vicinity of Jinlongdingzi volcano. For the lower coda Q0 value, the authors interpret the strong attenuation of coda waves near the Longgang volcano is possibly related to high temperature medium caused by magma chambers.
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