ITPCAS OpenIR  > 图书馆
Using pre-critical PKiKP-PcP phases to constrain the regional structures of the inner core boundary beneath East Asia
Shen, ZY (Shen, Zhongyin)1,2; Ai, YS (Ai, Yinshuang); He, YM (He, Yumei); Jiang, MM (Jiang, Mingming); Shen, ZY
Source PublicationPHYSICS OF THE EARTH AND PLANETARY INTERIORS
2016
Volume252Issue:0Pages:37-48
DOI10.1016/j.pepi.2016.01.001
AbstractWe collected 177 pre-critical PKiKP-PcP records, assembling a wealth of traveltime and amplitude data. These observations sample the inner core boundary (ICB) beneath East Asia with good spatial coverage. Combined with previous studies, our results demonstrate a 100-km-wide anomaly with positive PKiKPPcP traveltime residuals surrounded by negatives beneath the Yellow Sea area (123 degrees E, 33 degrees N) (Yellow Sea anomaly). After correcting the elliptic effects and mantle Vp heterogeneities based on the tomography models, the residuals of the Yellow Sea anomaly remain at least 0.6 s faster than those of the surrounding areas, suggesting a thickening of 2-3 km between the ICB and core mantle boundary (CMB). Due to the negative CMB topography along the western Pacific rim, we attribute this anomaly mainly to negative ICB topography. Across the northern border of the Yellow Sea anomaly, PKiKP/PcP amplitude ratios increase by approximately 50% from north to south, which can be explained by an approximately 0.6 g/cm(3) raise in ICB density contrast. These traveltime and amplitude features suggest a mosaic structure at the ICB beneath the Yellow Sea areas. (C) 2016 Elsevier B.V. All rights reserved.
Subject Area地质学
WOS IDWOS:000371840900003
Language英语
Indexed BySCI
KeywordMantle Boundary Lowermost Mantle Scale Heterogeneity Amplitude Ratios Travel-times Earths Core Topography Velocity Density Wave
Cooperation Status国内
Department碰撞与隆升
SubtypeArticle
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/7754
Collection图书馆
Corresponding AuthorShen, ZY
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Ctr Excellence Tibetan Plateau Earth Sci, 16 Lincui Rd, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Shen, ZY ,Ai, YS ,He, YM ,et al. Using pre-critical PKiKP-PcP phases to constrain the regional structures of the inner core boundary beneath East Asia[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2016,252(0):37-48.
APA Shen, ZY ,Ai, YS ,He, YM ,Jiang, MM ,&Shen, ZY.(2016).Using pre-critical PKiKP-PcP phases to constrain the regional structures of the inner core boundary beneath East Asia.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,252(0),37-48.
MLA Shen, ZY ,et al."Using pre-critical PKiKP-PcP phases to constrain the regional structures of the inner core boundary beneath East Asia".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 252.0(2016):37-48.
Files in This Item:
File Name/Size DocType Version Access License
V.252 37-48 2016.pdf(3015KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Shen, ZY (Shen, Zhongyin)]'s Articles
[Ai, YS (Ai, Yinshuang)]'s Articles
[He, YM (He, Yumei)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Shen, ZY (Shen, Zhongyin)]'s Articles
[Ai, YS (Ai, Yinshuang)]'s Articles
[He, YM (He, Yumei)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Shen, ZY (Shen, Zhongyin)]'s Articles
[Ai, YS (Ai, Yinshuang)]'s Articles
[He, YM (He, Yumei)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: V.252 37-48 2016.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.