W.J. Su, R.L. Woodward, A.M. Dziewonski, "Degree-12 model of shear velocity heterogeneity in the mantle," Journal of Geophysical Research -- Solid Earth, 99:6945-80, 1994. (Cited in more than 50 publications as of February 1996) Comments by Adam Dziewonski, Harvard University

According to Adam Dziewonski, a professor of geophysics at Harvard University, this paper describes the "highest resolution available for three-dimensional, seismological models of the Earth." He relates that such models are important because they help geologists understand the composition and movement of materials below the Earth's crust.

Adam Dziewonski Earth-Shattering: Harvard's Adam Dziewonski and colleagues developed a 3-D seismological model of the Earth

Previously, he explains, "all seismological models mapping the movement of materials in the Earth's crust and mantle were represented in one dimension -- namely, along the radius." He adds that such one-dimensional models deviated considerably from actual seismological behavior.

"The single-dimensional models treat the Earth as a...

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