PREM = Preliminary reference Earth model
Dziewonski, A. M., and D. L. Anderson: “Preliminary reference Earth model,” Phys. Earth Planet. Int. 25(4), 297–356, doi:10.1016/0031-9201(81)90046-7, 1981.
PREM = Preliminary reference Earth model
Dziewonski, A. M., and D. L. Anderson: “Preliminary reference Earth model,” Phys. Earth Planet. Int. 25(4), 297–356, doi:10.1016/0031-9201(81)90046-7, 1981.