We have provided the first estimate of scattering and intrinsic attenuation for the Gargano Promontory (Southern Italy) analyzing 190 local earthquakes with M_L ranging from 1.0 to 2.8. To separate the intrinsic \({Q}_{i}\) and scattering \({Q}_{s}\) quality factors with the Wennerberg approach (1993), we have measured the direct S waves and coda quality factors (\({Q}_{\beta }\), \({Q}_{c}\)) in the same volume of crust. \({Q}_{\beta }\) parameter is derived with the coda normalization method (Aki 1980) and \({Q}_{c}\) factor is derived with the coda envelope decay method (Sato 1977). We selected the coda envelope by performing an automatic picking procedure from \({T}_{\mathrm{start}}=1.5{T}_{S}\) up to 30 s after origin time (lapse time \({T}_{L}\)). All the obtained quality factors clearly increase with frequency. The \({Q}_{c}\) values correspond to those recently obtained for the area. The estimated \({Q}_{i}\) are comparable to the \({Q}_{c}\) at all frequencies and range between 100 and 1000. The \({Q}_{s}\) parameter shows higher values than \({Q}_{i}\), except for 8 Hz, where the two estimates are closer. This implies a predominance of intrinsic attenuation over the scattering attenuation. Furthermore, the similarity between \({Q}_{i}\) and \({Q}_{c}\) allows us to interpret the high \({Q}_{c}\) anomaly previously found in the northern Gargano Promontory up to a depth of 24 km, as a volume of crust characterized by very low seismic dumping produced by conversion of seismic energy into heat. Moreover, most of the earthquake foci fall in high \({Q}_{i}\) areas, indicating lower level of anelastic dumping and a brittle behavior of rocks.

我们对加尔加诺岬（意大利南部）的散射和固有衰减进行了首次估计，分析了 190 次M _L范围为 1.0 至 2.8级的当地地震。为了使用 Wennerberg 方法 (1993)分离内在\({Q}_{i}\)和散射\({Q}_{s}\)品质因数，我们测量了直接 S 波和尾波品质因数 ( \({Q}_{\beta }\) , \({Q}_{c}\) ) 在相同体积的地壳中。\({Q}_{\beta }\)参数是用 coda 归一化方法 (Aki 1980) 和\({Q}_{c}\)导出的因子是用尾部包络衰减方法导出的（Sato 1977）。我们通过执行自动拾取程序来选择尾声包络，从\({T}_{\mathrm{start}}=1.5{T}_{S}\)到原点时间（经过时间\({T }_{L}\) )。所有获得的品质因数都明显随着频率的增加而增加。\ ({Q}_{c}\)值对应于最近获得的该区域的值。在 100 到 1000 之间的所有频率和范围内，估计的\({Q}_{i}\)与 \( {Q}_{c}\)相当。\({Q}_{s}\)参数显示的值高于\({Q}_{i}\)，除了 8 Hz，这两个估计值更接近。这意味着固有衰减比散射衰减占主导地位。此外， \({Q}_{i}\)和\({Q}_ {c}\ )之间的相似性使我们能够解释先前在加尔加诺海角北部，深度达 24 公里，是一个地壳体积，其特征是地震能量转化为热量而产生的地震倾倒非常低。此外，大部分地震震源落在高\({Q}_{i}\)区域，表明非弹性倾倒水平较低，岩石具有脆性行为。