| 腾冲火山及其周围地区的地壳Q值特征 |
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| 引用本文： | 秦嘉政,皇甫岗.腾冲火山及其周围地区的地壳Q值特征[J].地震研究,1998,21(4):358-361. |
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| 作者姓名： | 秦嘉政 皇甫岗 |
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| 作者单位： | 云南省地震局 |
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| 摘 要： | 本利用腾冲火山活动区及周围地区的地方震尾波资料。根据尾波散射理论，研究了火山地区及周围地区的地壳Ｑ值。结果表明，火山地区的地壳Ｑ值最低。为９５，近邻区的龙陵－－保山地区的１７０－１５０之间。，周围地区最高达２９５左右。是火山地区的１．８－３．０倍左右。地壳Ｑ值的空间２明显表现出腾冲火山活动区为低Ｑ值区，而周围地区为高Ｑ值地区，这种地壳Ｑ值的空间２差异也许反映了火山地区内部介质状态与周围地区构造地
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| 关 键 词： | 尾波散射 地壳Q值 腾冲火山 火山 地震波 |
CHARACTERISTICS OF Q VALUES AROUND TENGCHONG VOLCANO AND ADJACENT AREAS |
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| Qin Jiazheng,Huangfu Gang,Zhang Junwei.CHARACTERISTICS OF Q VALUES AROUND TENGCHONG VOLCANO AND ADJACENT AREAS[J].Journal of Seismological Research,1998,21(4):358-361. |
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| Authors: | Qin Jiazheng Huangfu Gang Zhang Junwei |
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| Abstract: | Based on the theory of coda scattering, the authors have studied the crustal Q values around Tengchong and adjacent areas using the coda observed in Tengchong and nearby areas. The results show that Q vaule within volcano area is 95, the lowest; 170-150 in the nearby area of Longling-Baoshan; and 295, the highest in the surrounding area that is 1 8-3 0 times of that in volcano area. The spatial distribution of Q values demonstrates clearly that the area of Tengchong volcano activity appears low value, however, the high value in surrounding areas. The difference of spatial characteristics of Q value distribution probaly reflects that the internal media in and out the volcano area are quite different in physical property. The phenomena of low Q value in volcano area is possibly related to the materials of magma with high temperatrue, which shows the tectonic features related to volcano structure. |
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| Keywords: | coda scattering crustal Q value anomalous area low value Tengchong volcano |
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