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Tag: Subducting slab

Subduction diversity

Subduction diversity on the Earth represented by variable observed parameters.

Subduction diversity on the Earth represented by variable observed parameters. Shown are individual data points (transparent circles) together with their standard deviation, mean and median for ocean-ocean (blue) and ocean-continent (brown) subduction zones. While the minimum bending radii are compiled from Buffett and Heuret (2011), the remaining data are extracted from the compilation of Lallemand et al. (2005).

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Subduction zones (map)

A map of the Earth’s subduction zones, featuring all major subduction trenches, including the South American and the Izu Bonin Marianas.

Map of subduction zones on the Earth. Shown are the well known subduction trenches compiled by Bird (2003) across the Earth’s surface.

  • Creator: Fabio Crameri
  • This version: 25.09.2022
  • License: Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
  • Specific citation: This graphic by Fabio Crameri after Crameri and Tackley (2014) is available via the open-access s-Ink.org 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
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Subduction seismic anisotropy

Illustration of constraints on subduction zone seismic anisotropy from a global compilation of shear-wave splitting measurements.

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
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Slab tearing

Time-evolution of subduction slab break-off shown in a global spherical 3-D model.

Evolution of subduction slab tearing and eventual slab break-off shown in a global spherical 3-D model by contours of viscosity. The stiff down-going plate (yellow) is moving towards the observer before subduction and is starting to laterally tear apart at depth, while the remaining intact part continues to subduct.

  • 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 from Crameri and Tackley (2014) is available via the open-access s-Ink repository.
  • Related reference: 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
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