摘要
本文根据安艺的尾波理论,使用赤峰台单台记录的地方震、近震尾波资料,通过数值计算,测定了赤峰地区(41°～44°N,117°～121°E)地壳介质的品质因数。结果表明,在赤峰市南部地区介质Q值分布呈西高东低的态势,而北部地区介质状态差异很大,个别局部区域存在Q值异常区。最后对本方法求得的Q值所涉及的范围及Q值与深度和频率的关系作了简单分析和讨论。
The quality factors in the crust of Chifeng area (41°～ 44°N,117°～121°E) are tested through digital calculation by using the data of coda wave of near shocks and local earthquakes according to the coda theory proposed by Aki.The results show that the distribution of Q-value in the south area of Chifeng is high in the west and low in the east while in the north area of Chifeng,the differentiation of Q-value in different sections is quite 1arge,and in certain areas exist local abnormal O-value sections. As a conclusion,the bounds of the Q-values and the relationship between the Q-values and the depth and frequency are discussed.
出处
《防灾技术高等专科学校学报》
2005年第2期60-65,共6页
Journal of College of Disaster Prevention Techniques
关键词
介质
Q值
尾波
medium, Q-value, coda wave, earthquake trend prediction
