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Award ID contains: 1620604

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  1. ; (, Geophysical Research Letters)
    Abstract Using a 3‐D mantle wedge flow field for a generic oblique subduction system, we calculate elastic tensors of mineral aggregates in the mantle wedge for A‐, B‐, C‐, and E‐type olivine crystal preferred orientations (CPO) and apply the calculated elastic tensor in the forward calculation of shear‐wave splitting (SWS) through the mantle wedge. We find that the hexagonal approximation of the full tensor does not affect the SWS parameters (the fast direction and the delay time) significantly for all CPO types except that the delay time for C‐type CPO becomes shorter. Additionally, we find that despite the 3‐D mantle flow field that results from oblique subduction, the fast direction is margin‐normal for A‐, C‐ and E‐type CPOs and margin‐parallel for B‐type CPO. 
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  2. ; (, Journal of Geophysical Research: Solid Earth)
  3. ; (, Zenodo)
    This package of codes uses a 3-D velocity flow field to calculate crystal preferred orientation (CPO) using a modified version of D-Rex (Kaminiski et al., 2004), and then calculates local shear wave splitting (SWS) parameters using MSAT (Walker & Wookey, 2012). It includes the codes needed for the plotting D-Rex output (GMT5, Wessel et al., 2013), the scripts and general workflow to process the elastic tensors from D-Rex before using them in the SWS code, and multiple README files containing more details on each code. The mantle wedge flow from a 45 degree obliquity subduction zone is provided as an example. 
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  4. (, Journal of Geodynamics)
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