摘要
详细讨论了2003年以来宁夏及邻区弹性衰减系数Q值,对其进行分时段计算和讨论,得到宁夏及邻区2003~2005年、2003年、2004年和2005年地震的非弹性衰减系数Q值随频率f的关系,分别为Q(f)=553.8f0.292,Q(f)=615.2f0.274,Q(f)=683.2f0.233,Q(f)=728.6f0.230,得到祁连山中东段的非弹性衰减系数Q值随频率f的关系为Q(f)=671.6f0.307。
The elastic attenuation Q value in Ningxia and its adjacent region was discussed in detail and calculated in different period.The inversion results indicate that the frequency-dependent of inelastic attenuation Q value in 2003~2005、2003、2004、and 2005 is estimated as:Q(f)=553.8f 0.292、Q(f)=615.2f 0.274、Q(f)=683.2f 0.233、Q(f)=728.6f 0.230 and the frequency-dependent of inelastic attenuation Q value in the middle-east segment of Qilianshan is estimated as:Q(f)=671.6f 0.307.
引文
[1]周连庆,赵翠萍,修济刚,等.利用天然地震研究地震Q值的方法和进展[J].国际地震动态,2008,(2):1-11.
[2]柴炽章,马禾青,修济刚,等.祁连山—六盘山地震带中强地震活动特点及震前异常特征[J].西北地震学报,2003,25(4):354-358.