In this study, we estimate the characteristics of coda-wave attenuation in the Khurgu region, southeast of Zagros, with the use of single-back scattering procedure. The selected database comprises of 4870 seismograms of 259 local earthquakes recorded from March to June 2006, at 25 seismic stations within 2–100 km of epicentral distance, depth range 4–25 km, and 2–4.7 local magnitude range. oda attenuation analyzed on narrow bandpass-filtered seismograms from the time-domain decay of coda-wave amplitudes. The intended frequency-band ranged from 0.5 to 24.0 Hz.

Moreover, coda Q values have been estimated by using different window length, from 5 to 50 s. The coda Q value shows frequency decency in the form of Q_of ⁿ.

The mean-frequency relation for the above region has been found to be Q_c = 29 ± 1.0f ^1.13±0.007 for the 5-sec lapse-time window length as well as Q_c = 147 ± 1.4f ^{0.99 ±0.045} for the 50 s lapse time window length.

The Q_c value has been estimated at 25 stations and its lateral variation has been analyzed in this study. The distinct Coda Q values were observed at separate stations between the southern and northern regions. Our observations showed major differences in the coda depth. In addition, Coda Q values in the northern part are lower than southern part at all depths.

Beneath south and north of High Zagros Fault (HZF), the increase rate of Q_c has been higher at the depth 70 and 80 km, respectively. This may indicate the presence of the increased attenuation anomaly beneath the area lithosphere.

在这项研究中，我们使用单向散射程序估计了扎格罗斯东南部库尔古地区的尾波衰减特征。选定的数据库包括 2006 年 3 月至 6 月记录的 259 次局部地震的 4870 个地震图，这些地震图位于震中距离 2-100 公里、深度范围 4-25 公里和 2-4.7 级局部震级范围内的 25 个地震台站。对来自尾波振幅时域衰减的窄带通滤波地震图进行 oda 衰减分析。预期频带范围为 0.5 至 24.0 Hz。

此外，通过使用不同的窗口长度（从 5 到 50 秒）估计了尾声 Q 值。尾声 Q 值以 Q _o f ⁿ的形式显示频率规范。

已发现上述区域的平均频率关系为 Q _c  = 29 ± 1.0f ^{1.13±0.007（}对于 5 秒流逝时间窗口长度）以及 Q _c  = 147 ± 1.4f ^{0.99 ±0.045（}对于 50 s 流逝时间窗口长度。

Q _c值已在 25 个站点估计，并在本研究中分析了其横向变化。在南部和北部地区之间的不同站点观察到不同的 Coda Q 值。我们的观察显示尾声深度存在重大差异。此外，北部的 Coda Q 值在所有深度都低于南部。

在高扎格罗斯断层（HZF）以南和以北，Q _{c 的}增加率分别在 70 和 80 km 深度较高。这可能表明在区域岩石圈下方存在增加的衰减异常。