横向非均匀介质<i>Q</i>值层析成像方法、软件及应用

横向非均匀介质Q值层析成像方法、软件及应用

摘要: Q值结构对了解地壳的非弹性性质、地壳内部构造、热活动状态、地壳介质非均匀性以及断层分布有着非常重要的意义。编写了基于吸收特征时间t^*的二维横向非均匀Q值层析成像人机交互软件,可以方便快捷地计算深地震测深资料的振幅谱并通过拟合振幅谱得到反映地震波衰减的t^*。利用t^*通过二维Q值层析成像方法得到Q值结构。实际观测资料处理结果表明,文中给出的方法和软件是有效且可行的。

Abstract: Q value structure of the crust has great significance for understanding of non-elastic nature of crustal structure,thermal activity,crustal inhomogeneity,and fault distribution.Based on absorption characteristic time t^{*^{the GUI software for two-dimensional Q tomography has been written in this paper.Amplitude spectra of deep seismic sounding data can be calculated quickly and easily.The absorption characteristic time reflecting seismic wave attenuation can be obtained through fitting the amplitude spectra,and two-dimensional Q structure can be obtained by two-dimensional Q tomography using t^{*^{data.The real example shows that the method and the software are effective and feasible.}}}}