Core-mantle boundary topography data

1. Data from seismological analyses

Spherical harmonic coefficient data
Grid data (Grid points are 200 in latitude and 400 in longitude.)
  • Models: MD87, DH89, SH03, Tn10 (CMB_seis_grid.zip [2.1MB])
  • Data format: 1st-longitude (0 to 360 [deg]), 2nd-latitude (90 to -90 [deg]), 3rd-topography [km]
References
  • [MD87] Morelli, A., and A. M. Dziewonski, Topography of the core-mantle boundary and lateral homogeneity of the liquid core, Nature, 325, 6106, 678-683, doi:10.1038/325678a0, 1987.
  • [DH89] Doornbos, D. J., and T. Hilton, Models of the core-mantle boundary and the travel times of internally reflected core phases, J. Geophys. Res., 94, B11, 15,741-15,751, doi:10.1029/JB094iB11p15741, 1989
  • [SH03] Sze, E., and R.D. van der Hilst, Core mantle boundary topography from short period PcP, PKP, and PKKP data, Phys. Earth Planet. Int., 135, 27-46, doi:10.1016/S0031-9201(02)00204-2, 2003.
  • [Tn10] Tanaka, S., Constraints on the core-mantle boundary topography from P4KP-PcP differential travel times, J. Geophys. Res., 115, B04310, doi:10.1029/2009JB006563, 2010.


2. Data from numerical simulation of instantaneous mantle flow (Yoshida, 2008)

Grid data (Grid points are 200 in latitude and 400 in longitude.)
  • Models: H0, H0D1, H4, H4P3, H4P6, H4P3D1, H4P3W, H4P3D1W (CMB_inst_grid.zip [4.3MB])
  • Data format: 1st-longitude (0 to 360 [deg]), 2nd-latitude (90 to -90 [deg]), 3rd-topography [km]
Reference
  • Yoshida, M., Core-mantle boundary topography estimated from numerical simulations of instantaneous mantle flow, Geochem. Geophys. Geosyst., 9, 7, Q07002, doi:10.1029/2008GC002008, 2008.