Preprocessed Doublet Data of AI-0009 for "Decadal Change of Seismic Structure in the Earth's Lowermost Mantle"

Preprocessed waveform data of doublet AI-0009 used for "Decadal change of seismic structure in the Earth's lowermost mantle" by Zhang and Wen. ./data_AI-0009.zip — Preprocessed data of doublet AI-0009. The processing includes: rotating data to great-circle paths, marking theortical travel time of major seismic phases for the three components respectively, and paring the data by station names between the doublet. For relocation of the doublet, the vertical component data (*.BHZ.sac) should be further filtered from 0.8 to 2.0 Hz and interpolated to a sampling rate of 1000 Hz, while for searching temporal changes of seismic phases, the horizontal component data (*.BHR.sac and *BHT.sac) should be further filtered from 0.4 to 2.0 Hz and interpolated to a sampling rate of 1000 Hz, with some additionally filtered from 0.5 to 2.0 Hz due to data quality. ./data_IU.SDV.zip — Preprocessed data of doublet AI-0009 at station IU.SDV collected from ./data_AI-0009.zip and filtered data at three components that could be use to inspect the evident temporal changes in SKS and S-Scd-ScS phases with further correction for the effect of the relative doublet location and origin time. All the original seismic data used in this study are freely available at https://service.iris.edu/ hosted by the EarthScope Data Management Center.