Crustal Lg-wave attenuation in Southeast Asia and its implications for regional tectonic evolution
文献类型：期刊论文
| 作者 | Luo, Yi1,3; Zhao, Lian-Feng1; Ge, Zeng-Xi3; Xie, Xiao-Bi2; Yao, Zhen-Xing1 |
| 刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 出版日期 | 2021-09-01 |
| 卷号 | 226期号:3页码:1873-1884 |
| ISSN号 | 0956-540X |
| 关键词 | Asia Tomography Guided waves Seismic attenuation Crustal structure |
| DOI | 10.1093/gji/ggab122 |
| 英文摘要 | The crustal attenuation structure can effectively reveal the rheology and thermal properties of different geological blocks, and can provide seismological constraints on regional tectonic evolution. Based on 11 306 vertical-component Lg-wave seismograms recorded at 1 1 1 broad-band stations from 891 crustal earthquakes that occurred between 1994 and 2020, a broad-band Lg-wave attenuation model is obtained for Southeast Asia. This study demonstrates the capability of applying crustal Lg-wave attenuation inversion in a complex region mixed with continents, islands and marginal seas. The resolution approaches 2 degrees in most parts in the study region. Lg blockages are observed at places with sharp Moho depth changes. The resultant Q models are consistent with regional geologic structures provided by previous studies. Prominent low-attenuation anomalies are located in the Sundaland Core containing stable ancient crust, including Indochina, Malay Peninsula, East Sumatra, Sunda Shelf and Borneo Core. Regions with strong attenuation are associated with complex tectonic conditions, such as the Indo-Australian subduction zone, sutures in Sarawak and Sabah. The observed Lg-wave attenuation characteristics provide constraints on the tectonic affinities and evolutions of the geological blocks. The results show that the Borneo Core remained stable since its accretion with the Sundaland Core. Ancient blocks are characterized by weak Lg attenuation, whereas geologically younger terranes are often characterized by strong Lg attenuation, which can be exploited to better understand the separation and convergence of plates during the tectonic evolution. |
| WOS关键词 | INVERSION ; BENEATH ; MARGIN ; EAST |
| 资助项目 | National Natural Science Foundation of China[41630210] ; National Natural Science Foundation of China[41674060] ; National Natural Science Foundation of China[41974061] ; National Natural Science Foundation of China[41974054] ; Special Fund of China Seismic Experimental Site[2019CSES0103] ; Special Fund of China Seismic Experimental Site[2016CESE0203] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000684117400025 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/101908]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Zhao, Lian-Feng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 2.Univ Calif Santa Cruz, Inst Geophys & Planetary Phys, Santa Cruz, CA 95064 USA 3.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo, Yi,Zhao, Lian-Feng,Ge, Zeng-Xi,et al. Crustal Lg-wave attenuation in Southeast Asia and its implications for regional tectonic evolution[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2021,226(3):1873-1884. |
| APA | Luo, Yi,Zhao, Lian-Feng,Ge, Zeng-Xi,Xie, Xiao-Bi,&Yao, Zhen-Xing.(2021).Crustal Lg-wave attenuation in Southeast Asia and its implications for regional tectonic evolution.GEOPHYSICAL JOURNAL INTERNATIONAL,226(3),1873-1884. |
| MLA | Luo, Yi,et al."Crustal Lg-wave attenuation in Southeast Asia and its implications for regional tectonic evolution".GEOPHYSICAL JOURNAL INTERNATIONAL 226.3(2021):1873-1884. |
入库方式： OAI收割
来源：地质与地球物理研究所
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