西南天山地区的地震重定位与活动性分析

doi:10.7523/j.issn.2095-6134.2010.3.007

中国科学院大学学报 ›› 2010, Vol. 27 ›› Issue (3): 350-355.DOI: 10.7523/j.issn.2095-6134.2010.3.007

西南天山地区的地震重定位与活动性分析

于湘伟¹, 雷建设², 石耀霖¹, 张怀¹

1. 中国科学院研究生院计算地球动力学实验室,北京 100049;
2. 中国地震局地壳应力研究所,北京 100085

收稿日期:2010-02-14 修回日期:2010-02-22 发布日期:2010-05-15
通讯作者: 于湘伟
基金资助:
国家自然科学基金(40774049,40404002和40774044)资助 

Seismic activity analysis of relocated earthquakes in southwest Tienshan region

YU Xiang-Wei¹, LEI Jian-She², SHI Yao-Lin¹, ZHANG Huai¹

1. Laboratory of Computational Geodynamics, Graduate University of the Chinese Academy of Sciences, Beijing 100049, China;
2. Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085,China

Received:2010-02-14 Revised:2010-02-22 Published:2010-05-15

摘要/Abstract

摘要：

利用双差地震定位方法对西南天山地区24个台站记录到的864个地震的P波绝对到时数据和相对到时数据进行了地震重新定位,并给出了522个地震的震源参数.重定位后的地震定位精度均有了显著提高.重新定位后,本研究区域内地震活动密集成东西向与北西向线性排列分布,与已知活动断裂呈更加清晰的联系.

关键词: 双差地震定位法, 地震重定位, 西南天山地区, 地震活动性, 震源深度

Abstract:

We presented the relocated hypocenter parameters for 522 events of 864 earthquakes which occurred in the southwest Tienshan region. The double-difference (DD) relocating method was utilized to produce the pronounced relative event locations through adopting both the absolute and relative P-wave arrival times. The resolution of the relocated earthquake hypocenters was significantly increased. After the relocation, those formerly randomly-distributed earthquakes were clustered and aligned tending to the east-west and north-west directions. The revised hypocenter locations showed some relations with the known major active faults.

Key words: double-difference relocation method, hypocenter relocation, southwest Tienshan, seismic activity, focal depth

中图分类号:

P315.2

于湘伟, 雷建设, 石耀霖, 张怀. 西南天山地区的地震重定位与活动性分析[J]. 中国科学院大学学报, 2010, 27(3): 350-355.

YU Xiang-Wei, LEI Jian-She, SHI Yao-Lin, ZHANG Huai. Seismic activity analysis of relocated earthquakes in southwest Tienshan region[J]. , 2010, 27(3): 350-355.

参考文献

[1] 丁国瑜,卢演铸.对我国现今板内运动状态的初步探讨
[J].科学通报,1986,31(18):1412-1415.

[2] Molnar P,Tapponnier P. Cenozoic tectonics of Asia: Effects of continental collision
[J].Science,1975,189:419-426.

[3] Lei J S, Zhao D P. Teleseismic P-wave tomography and the upper mantle structure of the central Tien Shan orogenic belt
[J]. Physics of the Earth and Planetary Interiors. 2007,162:165-185.

[4] Roecker S, Sabitova T, Vinnik L, et al. Three-dimensional elastic wave velocity structure of the Western and Central Tien Shan
[J]. J Geophys Res, 1993,98:15779-15795.

[5] Wolfe C, Vernon F. Shear-wave splitting at central Tien Shan: evidence for rapid variation of anisotropic patterns
[J]. Geophys Res Lett,1998,25:1217-1220.

[6] Waldhauser F, Ellsworth W. A double-difference earthquake location algorithm: method and application to the northern Hayward fault, California
[J]. Bull Seism Soc Am, 2000,90 (6):1353-1368.

[7] Waldhauser F, Ellsworth W. Fault structure and mechanics of the California, from double-difference earthquake locations
[J]. J Geophys Res, 2002,107 (B3):ESE 3-1-3-14.

[8] Zhang G M, Wang S Y, Li L, et al. Focal depth research of earthquakes in Mainland China: Implication for tectonics
[J]. Chinese Science Bulletin (Englsish edition),2002,47(12):969-974(in Chinese). 张国民,汪素云,李丽,等.中国大陆地震震源深度及其构造含义
[J]. 科学通报,2002,47(9): 663-668.

[9] Engdahl R, Van der Hilst R, Buland R. Global teleseismic earthquake relocation with improved travel times and procedures for depth determination
[J]. Bull Seismol Soc Am,1998,88:722-743.

[10] Vinnik L, Reigber C, Aleshin I, et al. Receiver function tomography of the central Tien Shan
[J]. Earth Planet Sci Lett, 2004,225:131-146.

[11] 马杏垣.中国岩石圈动力学地图集
[M].北京:中国地图出版社,1989.

[12] Lei J S, Zhou H L, Zhao D P. 3D velocity structures of P wave in the crust and upper mantle beneath the Pamir and adjacent region
[J]. Chinese J Geophys, 2002, 45(6):802-811(in Chinese). 雷建设,周蕙兰,赵大鹏. 帕米尔及邻区地壳上地幔P波三维速度结构的研究.地球物理学报,2002,45(6):802-812.

[13] Wang Q, Ding G Y, Qiao X J, et al. Research on present crustal deformation in the southern Tianshan (Jiashi), China by GPS geodesy
[J]. Acta Seismologica Sinica, 2000,22(3):263-270(in Chinese). 王琪,丁国瑜,乔学军,等. 用GPS研究南天山(伽师) 地区现今地壳变形
[J]. 地震学报,2000,22 (3):263-270.

[14] Wu C Z,Jiao L X,Wang Q S, et al. A study of the gravity field and crustal structure of the Pamir Surroundings and adjacent regions
[J]. Chinese J Geophys (Acta Geophysica Sinica), 1993, 36(5):633-642(in Chinese). 武传真,焦灵秀,王谦身,等.帕米尔及其周围地区的重力场特征与地壳构造研究
[J]. 地球物理学报,1993,36(5):633-642.

西南天山地区的地震重定位与活动性分析

Seismic activity analysis of relocated earthquakes in southwest Tienshan region

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