PREDOMINANCE OF LONG-WAVELENGTH HETEROGENEITY IN THE MANTLE

被引：170

作者：

SU, WJ

DZIEWONSKI, AM

机构：

[1] Department of Earth and Planetary Sciences, Harvard University, Cambridge

来源：

NATURE | 1991年 / 352卷 / 6331期

关键词：

D O I：

10.1038/352121a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Analysis of travel-time anomalies of long-period shear waves recorded by the Global Digital Seismographic Network indicates that mantle heterogeneities, which probably reflect patterns of mantle convection, occur most prominently on length scales greater than about 6,000 km, when projected onto a two-dimensional map at the Earth's surface. Models of mantle convection will need to be able to produce a similar power spectrum.

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页码：121 / 126

页数：6

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