
BDAP2000 is parameterized as BDP98 (1656 equal-area blocks X 15 layers). Above, 8 layers are shown, with their mean depth given at the upper left corner of each panel.
BDAP2000 is available, in the form of a gzipped file (where the value of the percent velocity perturbation is given for a fine grid of points, covering the entire mantle) through anonymous ftp at ftp.seismology.harvard.edu, directory users/boschi/BDP00.