SP12RTS nesting tomography globes - "Seismic Matryoshka"

thingiverse

Global tomographic models of seismic velocity reveal profound insights into the planet's internal dynamics. We present S wave velocity variations where slow velocities dominate and fast velocities recede. To grasp the three-dimensional nature of tomography models, we draw an analogy to Russian nesting dolls (Matryoshkas). Each globe can be separated to uncover deeper layers. The tomographic velocity model featured here is SP12RTS (GJI, Koelemeijer et al 2016), showcasing structures up to spherical harmonic degree 12. We have chosen layers at 50 km depth (shallow), 660 km (mantle transition zone) and 2850 km (core mantle boundary). The models can be printed without supports, though this may result in a slightly disorganized interior at the top which requires cleaning before assembly to ensure a snug fit. The holes are designed for 5 mm diameter, 2 mm thick cylindrical neodymium magnets that can be glued in place for a secure snap-together connection. Alternatively, use the 5mm plug STL provided for a grip-fit.