Evidence for deep mantle circulation from global tomography

被引：0
作者：
R. D. van der Hilst
S. Widiyantoro
E. R. Engdahl
机构：
[1] Atmospheric,Massachusetts Institute of Technology, Department of Earth
[2] and Planetary Sciences,Australian National University
[3] Research School of Earth Sciences,undefined
[4] US Geological Survey,undefined
[5] DFC,undefined
来源：
Nature | 1997年 / 386卷
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摘要：
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.
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页码：578 / 584
页数：6
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