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.
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...