| DOI: | 10.1002/2016GL070524
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| 论文题名: | Constraining central Neo-Tethys Ocean reconstructions with mantle convection models |
| 作者: | Nerlich R.; Colli L.; Ghelichkhan S.; Schuberth B.; Bunge H.-P.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8606
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| EISSN: | 1944-8337
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| 出版年: | 2016
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| 卷: | 43, 期:18 | | 起始页码: | 9595
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| 结束页码: | 9603
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| 语种: | 英语
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| 英文关键词: | central Neo-Tethys reconstructions
; geodynamic modeling
; geoid
; seismic tomography
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| Scopus关键词: | Geodynamics
; Repair
; Seismic prospecting
; Seismographs
; Tectonics
; Velocity
; Geodynamic modeling
; geoid
; Mantle convection models
; Mantle heterogeneity
; Quantitative comparison
; Seismic observation
; Seismic tomography
; Time dependent velocity
; Seismology
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| 英文摘要: | A striking feature of the Indian Ocean is a distinct geoid low south of India, pointing to a regionally anomalous mantle density structure. Equally prominent are rapid plate convergence rate variations between India and SE Asia, particularly in Late Cretaceous/Paleocene times. Both observations are linked to the central Neo-Tethys Ocean subduction history, for which competing scenarios have been proposed. Here we evaluate three alternative reconstructions by assimilating their associated time-dependent velocity fields in global high-resolution geodynamic Earth models, allowing us to predict the resulting seismic mantle heterogeneity and geoid signal. Our analysis reveals that a geoid low similar to the one observed develops naturally when a long-lived back-arc basin south of Eurasia's paleomargin is assumed. A quantitative comparison to seismic tomography further supports this model. In contrast, reconstructions assuming a single northward dipping subduction zone along Eurasia's margin or models incorporating a temporary southward dipping intraoceanic subduction zone cannot sufficiently reproduce geoid and seismic observations. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992437522&doi=10.1002%2f2016GL070524&partnerID=40&md5=c27e14b972c3f8d95e31bcf8ddf05e86
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9569
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Munich University, Department of Earth and Environmental Sciences (Geophysics), Munich, Germany
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| Recommended Citation: | |
Nerlich R.,Colli L.,Ghelichkhan S.,et al. Constraining central Neo-Tethys Ocean reconstructions with mantle convection models[J]. Geophysical Research Letters,2016-01-01,43(18).
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