Additional supporting information may be found in the online version of this article.

figure_s1.pdfPDF document92KBack azimuthal variations of the apparent splitting parameters observed at the DESERT and ISN stations along the DST. The stations are grouped regarding to their geographic location along the DST.
figure_s2.pdfPDF document594KCross-convolution time series from the “best fit” models obtained for four groups of stations. On each plot, the name of the station and incoming back azimuth are also shown. The respective models are reported in Table 2. The red and blue curves are the convolution time series and explained in the text. For a best fit model, they show the most resemblance in different back azimuths.
figure_s3.pdfPDF document399KAn example of the wavefield generated from a seismic velocity model with lateral variation in anisotropic structure. The wavefield is generated using the finite difference approach exploited to calculate the synthetic seismograms used in the section of waveform modeling of the paper. The lower panel shows the 2-D model with a central anisotropic block in an isotropic background velocity structure. In the middle panel, the waveforms of the N-S (here fast) and E-W (here slow) components (in red and blue, respectively) recorded at a linear array of stations on the surface are plotted. The upper panel illustrates the same waveforms rotated in the Radial (blue) and Tangential (red) directions.
figure_s2_contin.pdfPDF document304KSupporting information
splitting_results_periods420_allevents_desert.xlsExcel spreadsheet50KSupporting information
splitting_results_periods420_allevents_desire.xlsExcel spreadsheet204KSupporting information
splitting_results_periods420_allevents_isn.xlsExcel spreadsheet53KSupporting information
read_me.txtapplication/txt2KSupporting information

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