Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL079732 |
Reconsidering Effective Elastic Thickness Estimates by Incorporating the Effect of Sediments: A Case Study for Europe | |
Kaban, M. K.1,2; Chen, B.3; Tesauro, M.4,5; Petrunin, A. G.1,2; El Khrepy, S.6,7; Al-Arifi, N.6 | |
2018-09-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:18页码:9523-9532 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Russia; Peoples R China; Italy; Netherlands; Saudi Arabia; Egypt |
英文摘要 | In the present study we analyzed the influence of density heterogeneity in the sedimentary cover on estimates of the effective elastic thickness (EET) of the lithosphere based on a cross-spectral analysis of gravity and topography data. The fan wavelet coherence technique was employed to calculate EET for most of Europe and adjoining southern mountain belts. We employed Bouguer gravity anomalies and topography corrected for the effect of density variations within sediments. Correcting for sediments considerably suppresses the effect of unexpressed subsurface loads and substantially reduces EET estimates in areas with negligible topography variations as it was demonstrated for North Europe and East European Platform. The results show a good correspondence between the EET patterns and tectonic fragmentation of Europe and better agree with independent estimates based on the strength model of the lithosphere. Therefore, considering of the effect of sediments is essential for correct determinations of EET in flat areas. Plain Language Summary The lithosphere is the outer rigid shell of the Earth, which overlies a viscous layer, called the asthenosphere. Knowledge of the lithosphere strength is important, for example, for understanding earthquake activity. Effective elastic thickness is a proxy for lithospheric strength and corresponds to the thickness of a homogeneous elastic plate, which deforms under loading in the same way as the real lithosphere. Thus, far, different methods used to determine this parameter have given controversial results. We demonstrate that considering the effect of sediments, which represent the soft uppermost crustal layer, provides a possibility for obtaining more consistent results. New effective elastic thickness estimates show that the European lithosphere is divided into two parts along the Trans European Suture Zone. Western Europe is characterized by predominantly low values of the effective elastic thickness and consequently weak lithosphere. In contrast, the lithosphere in Eastern Europe is much stronger. Regional variations of the effective elastic thickness obtained in this study are consistent with the tectonic partitioning of Europe with the surrounding mountain belts and help to understand ongoing tectonic processes. |
英文关键词 | Europe effective elastic thickness lithosphere fan wavelet method |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447761300022 |
WOS关键词 | UPPER-MANTLE ; CONTINENTAL LITHOSPHERE ; CRUSTAL STRUCTURE ; BOUGUER GRAVITY ; ARABIAN PLATE ; T-E ; TRANSITION ; COHERENCE ; MODEL ; TEMPERATURES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/26743 |
专题 | 气候变化 |
作者单位 | 1.GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, Potsdam, Germany; 2.Russian Acad Sci, Schmidt Inst Phys Earth, Moscow, Russia; 3.Cent S Univ, Sch Geosci & Infophys, Changsha, Hunan, Peoples R China; 4.Univ Trieste, Dept Math & Geosci, Trieste, Italy; 5.Univ Utrecht, Earth Sci Dept, Utrecht, Netherlands; 6.King Saud Univ, Geol & Geophys Dept, Riyadh, Saudi Arabia; 7.NRIAG, Cairo, Egypt |
推荐引用方式 GB/T 7714 | Kaban, M. K.,Chen, B.,Tesauro, M.,et al. Reconsidering Effective Elastic Thickness Estimates by Incorporating the Effect of Sediments: A Case Study for Europe[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(18):9523-9532. |
APA | Kaban, M. K.,Chen, B.,Tesauro, M.,Petrunin, A. G.,El Khrepy, S.,&Al-Arifi, N..(2018).Reconsidering Effective Elastic Thickness Estimates by Incorporating the Effect of Sediments: A Case Study for Europe.GEOPHYSICAL RESEARCH LETTERS,45(18),9523-9532. |
MLA | Kaban, M. K.,et al."Reconsidering Effective Elastic Thickness Estimates by Incorporating the Effect of Sediments: A Case Study for Europe".GEOPHYSICAL RESEARCH LETTERS 45.18(2018):9523-9532. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论