# 
# crust model file
# PREM (legacy nugen setup)
#
#
#   format :
#   upper_radius[m] density[g/cm^3] label[string]
#    - no space before first column
#    - delimiter must be A whitespace
#    - data must include at least 4 lines with labels
#      "moho_boundary", "rockice_boundary",
#      "earth_radius", and "atmo_radius"
#    - "earth_radius" must be the surface of ice
#    - lines start from '#' or whitespace are treated
#      as comments
#    - density of "moho_boundary" should be same as
#      the density of next layer
#

6346600 2.900 moho_boundary
6356000 2.900 inner_crust       
6375000 2.650 rockice_boundary     # Official PREM is 2.6 
6378000 0.930 earth_radius         # surface of ice
6478000 0.000 atmo_radius