( 2 ) calculating the gridded rayleigh wave attenuation factor y and group velocity . the lsqr algorithm is used to inverse the attenuation factor and group velocity under 4 ? x4 ? gridding and 2 ( 2 )進(jìn)行rayleigh波衰減系數(shù)、群速度網(wǎng)格化純路徑衰減反演計(jì)算,得到網(wǎng)格單元純路徑衰減系數(shù)和群速度分布結(jié)構(gòu)。
This is of very important significance to understand the material property and geodynamic of corresponding area , , the surface wave attenuation mechanism and the inversion algorithm of attenuation and s - wave quality factor are discussed systemically in this paper . some important fruits and understanding are resulted from the the crust and upper mantle tomography of china . ( 1 ) calculating of the rayleigh surface wave attenuation factor y 本文首先探討了面波衰減的機(jī)理,對面波衰減和s波品質(zhì)因子q _反演的計(jì)算方法進(jìn)行了系統(tǒng)的研究,并對中國大陸地區(qū)地殼上地幔q _三維結(jié)構(gòu)進(jìn)行層析成像,取得了以下重要成果: ( 1 ) rayleigh面波衰減系數(shù)計(jì)算。