THE MEASUREMENT ON VISCOSITY Q VALUE USINGP-WAVE OF LOCAL EARTHQUAKESIN WESTERN YUNNAN PROVINCE 滇西地区近震(?)波的粘性 Q_α值测定  

THE MEASUREMENT ON VISCOSITY Q VALUE USINGP-WAVE OF LOCAL EARTHQUAKESIN WESTERN YUNNAN PROVINCE

作　　者：杜志俊[1] 

机构地区：[1]国家地震局兰州地震研究所

出　　处：《地震研究》1989年第1期81-90,共10页Journal of Seismological Research

摘　　要：本文使用云南滇西地区、红河断裂带北段1984——1985年由PDR-2数字事件记录仪记录到的84张地震记录图,按文献〔4〕中所述的理论和方法,用直达(?)波资料计算了该区的分区粘性多Q_α值,初步结论是:整个场区内介质粘弹性可用非线性体去近似模拟。Q_α值分布情况为:由云龙、洱源、漾濞三点所成的三角区内,其值约为50±30左右较低,而沿弥渡向北,经下关至剑川所示的整个断裂带上所测Q_α值较高,约在160±30左右。反映了明显的构造差异性。In this paper, the district viscosity Q value of Western Yunnan Province has been calculated by the author's method in another paper, using the p-wave of 21 shocks which was recorded by PDR- 2 digital event recorder from 1984-1985. The results show that the viscosity properties of the earth crust in this region can be approximately simulated with nonlinear bodies.And the triangular district bounded by Yunlong, Eryuan and Yangbi has a low value about 50±30. While the narrow district across several faults from Midu, through Xiaguan to Jianchuan has a relatively higher Q value about 160±30. Then, a picture of Q value varied witg geological structure has been obtained.

关 键 词：P波 Qα值 地震预报 红河 断裂带 

分 类 号：P315.2[天文地球—地震学]