中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 岩石圈演化国家重点实验室
Upper crustal structure of NW Iran revealed by regional 3-D Pg velocity tomography

文献类型：期刊论文

作者Maheri-Peyrov, Mehdi3; Ghods, Abdolreza3; Donner, Stefanie2; Akbarzadeh-Aghdam, Maryam3; Sobouti, Farhad3; Motaghi, Khalil3; Hassanzadeh, Mirali3; Mortezanejad, Gholamreza4; Talebian, Morteza1; Chen, Ling5
刊名GEOPHYSICAL JOURNAL INTERNATIONAL
出版日期2020-08-01
卷号222期号:2页码:1093-1108
关键词Body waves Seismicity and tectonics Seismic tomography Crustal structure
ISSN号0956-540X
DOI10.1093/gji/ggaa236
英文摘要We present the result of a 3-D Pg tomography in NW Iran to better understand the relationship between seismicity and velocity structure within the young continental collision system. In this regard, we have collected 559 07 Pg traveltime readings from 3963 well located earthquakes recorded by 353 seismic stations including 121 stations from four new temporary seismic networks. The most prominent feature of our Pg velocity model is a high correlation between the location of majority of large magnitude events and the location of low velocity regions within the seismogenic layer. The large instrumental and historical earthquakes with some limited exceptions tends to happen close to the borders of the low velocity regions. The Lorestan arc of Zagros has the thickest (similar to 20 km) low velocity region and Central Iran has the thinnest (less than 10 km) low velocity region where little seismicity is observed. Despite the relative increase of thickness of low velocity region in the uppermost part of the upper crust of Alborz, the average Pg velocity of the upper crust increases from Central Iran towards Alborz and reaches to its climax in the northern hills of Alborz, where the catastrophic Rudbar-Tarom 1990 event happened. The Pg velocity map shows presence of a low angle basement ramp in the Lorestan arc at the depth range of similar to 10-20 km. The large low angle thrust Ezgele-Sarpolzahab 2017 earthquake and medium size high angle thrust events happened at the base and updip part of the velocity ramp, respectively. The calculated Pg velocity map shows low velocity regions at depths deeper than 11 and 20 km beneath the Sahand and Sabalan volcanoes, respectively.
WOS关键词SOUTH CASPIAN BASIN ; FAULT CENTRAL ALBORZ ; M-W 6.2 ; ACTIVE TECTONICS ; STRUCTURE BENEATH ; ZAGROS MOUNTAINS ; PLATE KINEMATICS ; EARTHQUAKE ; COLLISION ; DEFORMATION
资助项目Deutscher Akademischer Austauschdienst (DAAD) ; Ministry of Science and Research and Technology (MSRT) ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB03010802]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000565896700027
出版者OXFORD UNIV PRESS
资助机构Deutscher Akademischer Austauschdienst (DAAD) ; Deutscher Akademischer Austauschdienst (DAAD) ; Ministry of Science and Research and Technology (MSRT) ; Ministry of Science and Research and Technology (MSRT) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Deutscher Akademischer Austauschdienst (DAAD) ; Deutscher Akademischer Austauschdienst (DAAD) ; Ministry of Science and Research and Technology (MSRT) ; Ministry of Science and Research and Technology (MSRT) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Deutscher Akademischer Austauschdienst (DAAD) ; Deutscher Akademischer Austauschdienst (DAAD) ; Ministry of Science and Research and Technology (MSRT) ; Ministry of Science and Research and Technology (MSRT) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Deutscher Akademischer Austauschdienst (DAAD) ; Deutscher Akademischer Austauschdienst (DAAD) ; Ministry of Science and Research and Technology (MSRT) ; Ministry of Science and Research and Technology (MSRT) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/97785]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Ghods, Abdolreza
作者单位1.Geol Survey Iran, Res Inst Earth Sci, Tehran, Iran
2.Fed Inst Geosci & Nat Resources BGR, Stilleweg 2, D-30655 Hannover, Germany
3.Inst Adv Studies Basic Sci IASBS, Dept Eartlr Sci, POB 45195-1159, Zanjan, Iran
4.Damghan Univ, Dept Earth Sci, Damghan, Iran
5.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Maheri-Peyrov, Mehdi,Ghods, Abdolreza,Donner, Stefanie,et al. Upper crustal structure of NW Iran revealed by regional 3-D Pg velocity tomography[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2020,222(2):1093-1108.
APA Maheri-Peyrov, Mehdi.,Ghods, Abdolreza.,Donner, Stefanie.,Akbarzadeh-Aghdam, Maryam.,Sobouti, Farhad.,...&Chen, Ling.(2020).Upper crustal structure of NW Iran revealed by regional 3-D Pg velocity tomography.GEOPHYSICAL JOURNAL INTERNATIONAL,222(2),1093-1108.
MLA Maheri-Peyrov, Mehdi,et al."Upper crustal structure of NW Iran revealed by regional 3-D Pg velocity tomography".GEOPHYSICAL JOURNAL INTERNATIONAL 222.2(2020):1093-1108.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

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。