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用云南腾冲火山活动区破坏性地震的烈度分布资料研究了火山活动区的短周期波区域衰减特征,用地震活动资料研究了区域环境应力的空间分布特点。结果给出,腾冲火山活动区的地壳Q值属于低衰减区,平均Q值为85,比周围地区低50%左右;环境应力场量值τ0平均为6.0MPa,属于低应力地区。分析了这种低衰减、低应力背景产生的原因与火山活动区地壳内部高温热物质(如岩浆房)状态的关系,反映了火山活动区地壳内部介质状态与周围构造的差异性,结合其它的有关研究结果,证实腾冲火山活动区地壳内部存在岩浆囊并仍然在活动,由此推测腾冲火山不是死火山,存在再次喷发的危险性
The attenuation characteristics of short-period wave in volcanic activity area are studied by the intensity distribution of destructive earthquakes in Tengchong volcanic activity area in Yunnan Province. The spatial distribution characteristics of regional environmental stress are studied by seismicity data. The results show that the Q value of crust in Tengchong volcanic activity area belongs to the low attenuation area, with an average Q value of 85, which is about 50% lower than the surrounding area. The environmental stress field value τ0 is 6.0MPa on average, belonging to the low stress area. The relationship between the origin of low-attenuation and low-stress background and the state of high-temperature thermo-matter (such as magma chamber) in the crust of the volcanic active area is analyzed. The difference between the state of the crust in the volcanic active area and its surrounding structure is reflected. The results of the study confirmed that the crust in the Tengchong volcanic activity area exists in the crust and is still active, suggesting that Tengchong volcano is not an extinct volcano, there is the danger of re-eruption