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DOI | 10.1126/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
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
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 |
推荐引用方式 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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