This dataset contains measurements of the 410 and 660 km
discontinuities from a global dataset of SS precursors 
for the regional-scale study beneath the southern 
East Pacific Rise and surrounding ocean basins. 

The model of discontinuity topography is obtained through CMP
sorting, data preconditioning, fast MSSA, and stacking. Please
refer to the main text for details about the data processing. 

MTZ_depth.txt - transition zone topography model. Format is 
longitude, latitude, d410 depth (km), and d660 depth (km).

MTZ_depth_uncertainty.txt - error on discontinuity depth. Format is
longitude, latitude, error on d410 depth (km), error on d660 depth (km),
and error on MTZ thickness (km).