Evidence for Lowermost mantle anisotropy from discrepant splitting of XKS and SKKS phases recorded in India

This study comprehensively examines the shear wave splitting measurements of XKS (SKS and PKS) - SKKS pairs on the same seismograms recorded at 357 broadband stations spanning India, to characterize anisotropy in the lowermost mantle. This resulted in the identification of 104 XKS-SKKS pairs at 62 stations. Of 104 pairs, waveforms of 101 XKS and the corresponding SKKS are made available. The waveforms of the remaining three pairs can be downloaded from the IRISDMC.本研究针对覆盖印度区域的357个宽频带台站所记录的同震波形中的XKS（SKS与PKS）-SKKS对的横波分裂测量结果开展系统性分析，以刻画下地幔的各向异性特征。最终在62个台站中共识别出104组XKS-SKKS对。在这104组对中，101组对应的XKS与SKKS波形数据已公开提供；剩余3组对的波形数据可从IRISDMC下载获取。