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E . Walsh, M. Savage, R. Arnold, F . Brenguier & E. Rivemale

Monitoring temporal changes with shear wave splitting: testing the methodology Supplementary Material. E . Walsh, M. Savage, R. Arnold, F . Brenguier & E. Rivemale abstract ID #1479768, poster S43F-2530. Background Information.

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E . Walsh, M. Savage, R. Arnold, F . Brenguier & E. Rivemale

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  1. Monitoring temporal changes with shear wave splitting: testing the methodologySupplementary Material E. Walsh, M. Savage, R. Arnold, F. Brenguier & E. Rivemale abstract ID #1479768, poster S43F-2530

  2. Background Information • A printed poster cannot contain animated content so we have chosen to show an animated graph similar to Figure 2 from the poster • To view the animations start the slide show (F5) • The animations are the property of the first author and cannot be reused without written permission • The poster should be read before looking at this content • Extra comments on the animations are given on the other slides

  3. Cycle Skipping and the Incoming Polarisation – Explanation of Graphs The next slides contain 3 animated plots Left plot = waveforms before and after reversing the splitting – the p component is related to the orientation of the original wave Middle plot = particle motion plus fast and slow waveforms before and after reversing the splitting Right plot = contour plot of the error surface – cross hairs show the current splitting parameters. Bold area is the 95% confidence region

  4. Cycle Skipping and the Incoming Polarisation – Animation 1

  5. Cycle Skipping and the Incoming Polarisation – Animation 2

  6. Cycle Skipping and the Incoming Polarisation – Comments Part 1 • When the selected point shifts to the other 95% confidence region the particle motion flips and points in the opposite direction. • Corrected fast and slow waveforms show what appears to be cycle skipping (matching another peak/trough). • Corrected slow waveform flips at the half way point. The codes flip the sign of the slow waveform displacements when a peak is matched to a trough to make the match more obvious.

  7. Cycle Skipping and the Incoming Polarisation – Comments Part 2 • p ⊥ component appears to have more energy on it when the minimum is shifted to the other 95% confidence region. • The p component after desplitting still has its first peak but the second peak starts to shrink. This waveform can also be seen slowly moving by the delay time.

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