GSTDTAP  > 地球科学
DOI10.1126/science.aav0822
Inferring Earth's discontinuous chemical layering from the 660-kilometer boundary topography
Wu, Wenbo1,2,3; Ni, Sidao1; Irving, Jessica C. E.2
2019-02-15
发表期刊SCIENCE
ISSN0036-8075
EISSN1095-9203
出版年2019
卷号363期号:6428页码:736-+
文章类型Article
语种英语
国家Peoples R China; USA
英文摘要

Topography, or depth variation, of certain interfaces in the solid Earth can provide important insights into the dynamics of our planet interior. Although the intermediate-and long-range topographic variation of the 660-kilometer boundary between Earth's upper and lower mantle is well studied, small-scale measurements are far more challenging. We found a surprising amount of topography at short length scale along the 660-kilometer boundary in certain regions using scattered P'P' seismic waves. Our observations required chemical layering in regions with high short-scale roughness. By contrast, we did not see such small-scale topography along the 410-kilometer boundary in the upper mantle. Our findings support the concept of partially blocked or imperfect circulation between the upper and lower mantle.


领域地球科学 ; 气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000458874100032
WOS关键词SPECTRAL ELEMENT METHOD ; TRANSITION ZONE ; MANTLE DISCONTINUITIES ; SEISMIC DISCONTINUITY ; VELOCITY STRUCTURE ; IZU-BONIN ; CORE ; HETEROGENEITY ; PRECURSORS ; PP
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/200769
专题地球科学
资源环境科学
气候变化
作者单位1.Chinese Acad Sci, Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan 430077, Hubei, Peoples R China;
2.Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA;
3.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China
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GB/T 7714
Wu, Wenbo,Ni, Sidao,Irving, Jessica C. E.. Inferring Earth's discontinuous chemical layering from the 660-kilometer boundary topography[J]. SCIENCE,2019,363(6428):736-+.
APA Wu, Wenbo,Ni, Sidao,&Irving, Jessica C. E..(2019).Inferring Earth's discontinuous chemical layering from the 660-kilometer boundary topography.SCIENCE,363(6428),736-+.
MLA Wu, Wenbo,et al."Inferring Earth's discontinuous chemical layering from the 660-kilometer boundary topography".SCIENCE 363.6428(2019):736-+.
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