We adopt the depth to which a 2% shear wave velocity perturbation persists above reference model AK135 as our lithosphere-asthenosphere boundary (LAB) proxy.

LAB_depth.grd : a netcdf grid developed using the Generic Mapping Tools (GMT) holding longitude, latitude, LAB depth
LAB_depth.xyz : corresponding text file holding longitude, latitude, LAB depth; LAB values are NaN beyond the polygon of credible resolution
LAB_depth_noNaNs.xyz : corresponding text file holding longitude, latitude, LAB depth; LAB values limitied to the polygon of credible resolution with NaNs removed
LAB_depth_drapeTOPO.pdf : corresponding pdf draped onto topography
LAB_depth_drapeTOPO.png : corresponding png draped onto topography

