Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL078610 |
Teleseismic Traveltime Tomography of Northern Sumatra | |
Liu, Shaolin1,3; Suardi, Iman2; Yang, Dinghui3; Wei, Shengji4,5; Tong, Ping1,5 | |
2018-12-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:24页码:13231-13239 |
文章类型 | Article |
语种 | 英语 |
国家 | Singapore; Indonesia; Peoples R China |
英文摘要 | We imaged the mantle structure beneath northern Sumatra by inverting high-quality seismic arrival time data and using a newly developed eikonal equation-based teleseismic tomography method. Traveltime differences between neighboring stations were reliably extracted by cross-correlating teleseismic waveforms, which were recorded by 26 stations from January 2009 to January 2018. Both P and S wave tomographic results show the oblique subduction of the Indo-Australian oceanic lithosphere beneath the Sunda plate. The maximum penetration depth of the subducted slab into the mantle varies roughly from 400km in the north to 800km in the south. The plunging fold of the subducted slab, which mimics the shape of the trench and the volcanic arc, has less curvature than that reported in the literature; additionally, our results suggest that the gentle slab fold can be traced to a depth of about 500km. Furthermore, a slab tear may exist beneath northern Sumatra. Plain Language Summary An eikonal equation-based software is developed for teleseismic traveltime tomography. A new subducting slab model for interpreting the slab morphology beneath northern Sumatra is obtained by inverting the high-quality seismic data and using the robust traveltime tomographic tool. The slab gentle folding, tearing, offset, and variation model may explain the major feature of the subducting slab beneath northern Sumatra. The complex slab morphology may be related to the lateral stress on the slab because of the oblique subduction and the movement of Sundaland margin. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456404600007 |
WOS关键词 | STRUCTURE BENEATH INDONESIA ; SEISMIC TOMOGRAPHY ; PLATE CONVERGENCE ; WAVE TOMOGRAPHY ; MANTLE BENEATH ; SLAB ; ASIA ; RECONSTRUCTIONS ; CONSTRAINTS ; EVOLUTION |
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/27914 |
专题 | 气候变化 |
作者单位 | 1.Nanyang Technol Univ, Sch Phys & Math Sci, Div Math Sci, Singapore, Singapore; 2.Indonesia State Coll Meteorol Climatol & Geophys, Jakarta, Indonesia; 3.Tsinghua Univ, Dept Math Sci, Beijing, Peoples R China; 4.Nanyang Technol Univ, Earth Observ Singapore, Singapore, Singapore; 5.Nanyang Technol Univ, Asian Sch Environm, Singapore, Singapore |
推荐引用方式 GB/T 7714 | Liu, Shaolin,Suardi, Iman,Yang, Dinghui,et al. Teleseismic Traveltime Tomography of Northern Sumatra[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(24):13231-13239. |
APA | Liu, Shaolin,Suardi, Iman,Yang, Dinghui,Wei, Shengji,&Tong, Ping.(2018).Teleseismic Traveltime Tomography of Northern Sumatra.GEOPHYSICAL RESEARCH LETTERS,45(24),13231-13239. |
MLA | Liu, Shaolin,et al."Teleseismic Traveltime Tomography of Northern Sumatra".GEOPHYSICAL RESEARCH LETTERS 45.24(2018):13231-13239. |
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