Evidence for deep mantle circulation from global tomography

R. D. van der Hilst, S. Widiyantoro and E. R. Engdahl
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R. D. van der Hilst: Atmospheric, and Planetary Sciences
S. Widiyantoro: Research School of Earth Sciences
E. R. Engdahl: US Geological Survey, DFC

Nature, 1997, vol. 386, issue 6625, 578-584

Abstract: Abstract Seismic tomography based on P-wave travel times and improved earthquake locations provides further evidence for mantle-wide convective flow. The use of body waves makes it possible to resolve long, narrow structures in the lower mantle some of which can be followed to sites of present-day plate convergence at the Earth's surface. The transition from subduction-related linear structures in the mid-mantle to long-wavelength heterogeneity near the core-mantle boundary remains enigmatic, but at least some slab segments seem to sink to the bottom of the mantle.

Date: 1997
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DOI: 10.1038/386578a0

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