| 腾冲火山区地震构造应力场研究 |
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| 引用本文： | 王绍晋,龙晓帆.腾冲火山区地震构造应力场研究[J].地震研究,2000,23(2):172-178. |
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| 作者姓名： | 王绍晋 龙晓帆 |
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| 作者单位： | 云南省地震局,昆明,650041 |
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| 基金项目： | 地震科学联合基金!( 99119)资助项目 |
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| 摘 要： | 通过对腾冲火山区强震和中小地震震源机制制解分析，对火山区构造应力场方向空间分布，以及震源类型和破裂特征作了研究。利用腾冲火山区中小地震地震波资料，计算得到的地震震源处剪应力强度值，对火山区应力场强度或初始应力状态进行了研究。腾冲火山区构造庆力场主要为北北东－北东－北东东向，接近水平的压应力场。腾冲火山区凛环境剪应力场高值区所包围的低剪应力值分布区。腾冲火山区地震震源具有多种类型，震源破裂具有多种形
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| 关 键 词： | 震源机制解 构造应力场 腾冲火山区 地震 |
STUDY ON TECTONIC STRESS FIELD IN TENGCHONG VOLCANO AREAS |
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| Wang Shaojin,Long Xiaofan.STUDY ON TECTONIC STRESS FIELD IN TENGCHONG VOLCANO AREAS[J].Journal of Seismological Research,2000,23(2):172-178. |
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| Authors: | Wang Shaojin Long Xiaofan |
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| Abstract: | Through focal mechanism analyses of mid small earthquakes occurred in Tengchong volcano areas, the spatial distribution of tectonic stress field, focal types and fracture types have been studied. The strength of shear stress in position of source is calculated by the data of mid small earthqudkes. The strength of stress field or state of primary stress is also studied. The tectonic stress field in Tengchong volcano areas is oriented as NNE NE NEE, nearing horizontal compressive stress field. The volcano areas are the distributions of low shear stress values surrounded by the high values of ambient stresses. The sources in volcano areas are multi types, and fractures have multi modes. |
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| Keywords: | solutionof focal mechanism tectonic stress field Tengchong volcano area |
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