S-wave attenuation in the crust in northern Greece
S-wave attenuation in the crust in northern Greece
复制标题
希腊北部地壳中的横波衰减
DOI：
10.1785/bssa0850051381
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
P. Hatzidimitriou
中科院分区：
文献类型：
--
作者：
P. Hatzidimitriou
地壳中横波的衰减估计，频率在1.5和12.0赫兹之间，通过应用单站方法的基础上的衰减率的S波尾波振幅比与距离。使用的数据来自1983年至1989年期间希腊北方塞萨洛尼基地区发生的当地地震，这些地震由塞萨洛尼基大学地球物理实验室的遥测网络记录。对于1.5、3.0、6.0和12.0 Hz，获得的Qs值分别为115、244、477和755。这些值是非常接近的尾波Q值估计为相同的区域使用的S-to-S单散射模型的流逝时间在30和100秒之间，但它们高于尾波Q值的流逝时间在10和30秒之间。估计的Qs被发现是强烈的频率依赖性，成比例的f0.91，这是非常接近的尾波Q的频率依赖性。
The attenuation of shear waves in the crust is estimated, for frequencies between 1.5 and 12.0 Hz, by applying a single-station method based on the rate of decay of the S-wave to coda-wave amplitude ratio with distance. The data used come from local earthquakes that occurred in the Thessaloniki area, northern Greece, during the period 1983 through 1989 and were recorded by the telemetered network of the Geophysical Laboratory of the University of Thessaloniki. The Qs values obtained are 115, 244, 477, and 755 for 1.5, 3.0, 6.0, and 12.0 Hz, respectively. These values are very close to the coda Q values estimated for the same area using the S-to-S single scattering model for lapse times between 30 and 100 sec but they are higher than the coda Q values for lapse times between 10 and 30 sec. The estimated Qs is found to be strongly frequency dependent, proportional to f0.91, which is very close to the frequency dependence of the coda Q.