Illustration of constraints on subduction zone seismic anisotropy from shear-wave splitting measurements from the compilation presented in Long (2013). The subduction trenches compiled by Bird (2003) are shown in black. The anisotropic signals of the wedge (orange) and back-slab regions (blue) are shown separately. Blue arrows indicate average fast directions for the back-slab splitting signal from SKS (seismic waves traveling through the Outer Core), local S, and source-side tele-seismic S-splitting measurements (Long and Silver, 2009; Paczkowski, 2012). Orange arrows indicate average fast directions for wedge anisotropy from local S splitting (Long and Wirth, 2013). In regions where multiple fast directions are shown, splitting patterns exhibit a mix of trench-parallel, trench-perpendicular, and oblique fast directions.
- Creator: Fabio Crameri
- This version: 01.09.2021
- License: Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
- Specific citation: This graphic by Fabio Crameri after Crameri and Tackley (2014) and Long (2013) is available via the open-access s-Ink repository.
- Related references:
Crameri, F., and P.J. Tackley (2014), Spontaneous development of arcuate single-sided subduction in global 3-D mantle convection models with a free surface, J. Geophys. Res. Solid Earth, 119(7), 5921-5942, doi:10.1002/2014JB010939
Long, M. D. (2013), Constraints on subduction geodynamics from seismic anisotropy, Rev. Geophys., 51, 76–112, doi:10.1002/rog.20008
- Transparent background
- Light & dark background versions
- Colour-vision deficiency friendly
- Readable as black&white print
Faulty or missing link? – Please report them via a reply below!
8 views (since Nov. 2022)