Preliminary reference Earth model

Anderson, 1961, Elastic wave propagation in layered anisotropic media, J. Geophys. Res., 66, 2953, 10.1029/JZ066i009p02953

Anderson, 1966, Recent evidence concerning the structure and composition of the Earth's mantle, Vol. 6, 1

Backus, 1965, Possible forms of seismic anisotropy of the upper mantle under oceans, J. Geophys. Res., 70, 3249, 10.1029/JZ070i014p03429

Backus, 1967, Numerical applications of a formalism for geophysical inverse problems, Geophys. J. R. Astron. Soc., 13, 247, 10.1111/j.1365-246X.1967.tb02159.x

Birch, 1964, Density and composition of mantle and core, J. Geophys. Res., 69, 4377, 10.1029/JZ069i020p04377

Buland, 1979, Observations from the IDA network of attenuation and splitting during a recent earthquake, Nature (London), 277, 358, 10.1038/277358a0

Choy, 1975, Pulse distortion and Hilbert transformation in multiply reflected and refracted body waves, Bull. Seismol. Soc. Am., 65, 55, 10.1785/BSSA0650010055

Derr, 1969, Free oscillation observations through 1968, Bull. Seismol. Soc. Am., 59, 2079, 10.1785/BSSA0590052079

Dratler, 1971, High-Q overtone modes of the Earth, Geophys. J.R. Astron. Soc., 23, 399, 10.1111/j.1365-246X.1971.tb01832.x

Dziewonski, 1971, On regional differences in dispersion of mantle Rayleigh waves, Geophys. J.R. Astron. Soc., 22, 289, 10.1111/j.1365-246X.1971.tb03601.x

Dziewonski, 1972, Observations of normal modes from 84 recordings of the Alaskan earthquake of 28 March 1964, Geophys. J. R. Astron. Soc., 27, 393, 10.1111/j.1365-246X.1972.tb06100.x

Dziewonski, 1973, Observations of normal modes from 84 recordings of the Alaskan earthquake of 28 March 1974, 35, 401

Dziewonski, 1972, Residual dispersion measurement—a new method of surface wave analysis, Bull. Seismol. Soc. Am., 62, 129, 10.1785/BSSA0620010129

Engdahl, 1974, Differential PcP travel times and the radius of the core, Geophys. J. R. Astron. Soc., 39, 435, 10.1111/j.1365-246X.1974.tb05466.x

Engdahl, 1974, Differential PKiKP travel times and the radius of the inner core, Geophys. J. R. Astron. Soc., 39, 457, 10.1111/j.1365-246X.1974.tb05467.x

Forsyth, 1975, A new method for the analysis of multimode surface wave dispersion; application to Love-wave propagation in the east Pacific, Bull. Seismol. Soc. Am., 65, 323, 10.1785/BSSA0650020323

Forsyth, 1975, The early structural evolution and anisotropy of the oceanic upper mantle, Geophys. J. R. Astron. Soc., 43, 103, 10.1111/j.1365-246X.1975.tb00630.x

Geller, 1979, Time domain measurements of attenuation of fundamental spheroidal modes (0S6-0S28) for the 1977 Indonesian earthquake, Bull. Seismol. Soc. Am., 69, 1671, 10.1785/BSSA0690061671

Gilbert, 1975, An application of normal mode theory to the retrieval of structural parameters and source mechanisms from seismic spectra, Philos. Trans. R. Soc. London, 278, 187, 10.1098/rsta.1975.0025

Gogna, 1981, Seismic travel times for Central Asian epicenters, Geophys. J. R. Astron. Soc.

Hales, 1970, The travel times of S and SKS, Bull. Seismol. Soc. Am., 60, 461

Hales, 1968, Velocity distribution in the lower mantle, Bull. Seismol. Soc. Am., 58, 1975

Harkrider, 1962, Computation of surface wave dispersion for multilayered anisotropic media, Bull. Seismol. Soc. Am., 52, 321, 10.1785/BSSA0520020321

Herrin, 1968, Estimation of surface-focus P travel times, Bull. Seismol. Soc. Am., 58, 1273, 10.1785/BSSA0580041273

Hess, 1964, Seismic anisotropy of the uppermost mantle under the oceans, Nature (London), 203, 629, 10.1038/203629a0

Jordan, 1974, Earth structure from free oscillations and travel times, Geophys. J. R. Astron. Soc., 36, 411, 10.1111/j.1365-246X.1974.tb03648.x

Kanamori, 1970, Velocity and Q of mantle waves, Phys. Earth Planet. Inter., 2, 259, 10.1016/0031-9201(70)90013-0

Kanamori, 1977, Importance of physical dispersion in surface waves and free oscillation problems, Rev. Geophys. Space Phys., 15, 105, 10.1029/RG015i001p00105

Love, 1927, A Treatise on the Mathematical Theory of Elasticity, 643

Mendiguren, 1973, Identification of the free oscillation of spectral peaks for 1970 July 31, 33, 281

Mills, 1977, Rayleigh Wave Group Velocities and Attenuation Coefficients, 10.1017/S0004972700010558

Raitt, 1969, Anisotropy of Pacific upper mantle, J. Geophys. Res., 74, 3095, 10.1029/JB074i012p03095

Sailor, 1978, Attenuation of Low Frequency Seismic Energy

Sailor, 1978, Measurements and interpretation of normal mode attenuation, Geophys. J. R. Astron. Soc., 53, 559, 10.1111/j.1365-246X.1978.tb03760.x

Schlue, 1977, Shear-wave polarization anisotropy in the Pacific basin, Geophys. J. R. Astron. Soc., 49, 145, 10.1111/j.1365-246X.1977.tb03706.x

Sengupta, 1975, The structure of the Earth's mantle from body wave observations

Sengupta, 1976, P-wave travel times for deep earthquakes, Bull. Seismol. Soc. Am., 66, 1555

Steim, 1980, A new approach to measurements of dispersion and attenuation of mantle waves, EOS Trans. Am. Geophys. Union, 61, 298

Stein, 1978, Attenuation measurements of split normal modes for the 1960 Chilean and 1964 Alaskan earthquakes, Bull. Seismol. Soc. Am., 68, 1595, 10.1785/BSSA0680061595

Takeuchi, 1972, Seismic surface waves, 11, 217

Woodhouse, 1981, A note on the calculation of travel times in a transversely isotropic earth model, Phys. Earth Planet. Inter., 25, 357, 10.1016/0031-9201(81)90047-9

Woodhouse, 1978, The effect of a general aspherical perturbation on the free oscillations of the Earth, Geophys. J. R. Astron. Soc., 53, 263, 10.1111/j.1365-246X.1978.tb04259.x

Yu, 1979, Regionalized shear velocity models of the Pacific upper mantle from observed Love and Rayleigh wave dispersion, Geophys. J. R. Astron. Soc., 57, 311, 10.1111/j.1365-246X.1979.tb04781.x