globalchange  > 气候变化与战略
DOI: 10.1016/j.tecto.2020.228589
论文题名:
Seismic attenuation tomography in southwestern China: Insight into the evolution of crustal flow in the Tibetan Plateau
作者: Dai A.; Tang C.-C.; Liu L.; Xu R.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2020
卷: 792
语种: 英语
中文关键词: Crustal flow ; Seismic attenuation ; Sichuan-Yunnan region ; Tibetan Plateau
英文关键词: Geodynamics ; Lithology ; Seismic waves ; Collisional process ; Continental collisions ; Emeishan large igneous provinces ; Geodynamic process ; Seismic attenuation ; Seismic wave attenuations ; Seismic waveforms ; Sichuan-Yunnan region ; Seismology ; continental collision ; crustal evolution ; Eurasian plate ; Indian plate ; large igneous province ; P-wave ; S-wave ; seismic attenuation ; seismic tomography ; seismic wave ; China ; Qinghai-Xizang Plateau ; Sichuan ; Yunnan
英文摘要: Crustal flow in southwestern China is commonly attributed to the continental collision between the Indian and the Eurasian plates. Therefore, studying crustal flow in this area can provide valuable insight into the collisional process. The quality factor (Q) is an indicator of seismic wave attenuation that provides constraints on lithology, rheology, and geodynamic processes, which are vital for interpreting the nature of the crustal flow in a given region. In this study, we used local seismic waveforms to obtain regional attenuation models for P- (QP) and S- (QS) waves in the Sichuan-Yunnan region (SYR). The Emeishan Large Igneous Province (ELIP) is characterized by high QP and QS values in the Middle Yunnan block (MYB) at depths greater than 5 km. The QP and QS values in most of the fault zones surrounding the MYB were lower than 300, indicating that the material within crustal faults causes high waveform attenuation. Our results suggest that the crustal flow was diverted into two channels in the northern MYB due to resistance from the ELIP. To illuminate the tectonic dynamics of the SYR, we propose a simple model that explains both the evolution of the crustal flow and the variation in the seismic wave attenuation. © 2020
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170570
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: Hubei Subsurface Multi-scale Imaging Key Laboratory, Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, Hubei 430074, China; State Key Laboratory of Geological Processes and Mineral Resources, Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, Hubei 430074, China; Geophysical Exploration Brigade of Hubei Geological Bureau, Wuhan, Hubei 430056, China; Research Institute of Disaster Reduction and Emergency Rescue, Sichuan Earthquake Agency, Chengdu, Sichuan 610041, China

Recommended Citation:
Dai A.,Tang C.-C.,Liu L.,et al. Seismic attenuation tomography in southwestern China: Insight into the evolution of crustal flow in the Tibetan Plateau[J]. Tectonophysics,2020-01-01,792
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Dai A.]'s Articles
[Tang C.-C.]'s Articles
[Liu L.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Dai A.]'s Articles
[Tang C.-C.]'s Articles
[Liu L.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Dai A.]‘s Articles
[Tang C.-C.]‘s Articles
[Liu L.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

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