全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

2014年2月12日新疆于田MS7.3级地震主震及余震序列重定位研究

DOI: 10.6038/cjg20140330, PP. 1012-1020

Keywords: 于田地震,贝叶斯绝对定位,双差定位,阿尔金断裂带

Full-Text   Cite this paper   Add to My Lib

Abstract:

本研究采用基于贝叶斯理论的绝对定位方法对2014年2月12日新疆于田MS7.3级地震进行绝对定位,得到震中位置为82.56°E、36.04°N、震源深度为12.3km;采用双差定位法对254个地震序列进行相对定位,得到101个重定位事件.结果显示,主震位于阿尔金断裂带西南端多个分支断裂的交汇处.余震震源主要分布范围在5~10km深度之间,主震处余震代表的断层面较为陡立,且余震序列呈现出明显的西南向纯单侧扩展模式.沿阿尔金断裂带主震的北东向民丰震区本次地震后显示一个明显的地震丛集,说明本次主震对该震区具有触发作用.

References

[1]  Deng Q D, Zhang P Z, Ran Y K, et al. 2002. Basic characteristics of active tectonics of China. Science in China (Series D), 32(12): 1020-1031.
[2]  Gao R, Xiao X C, Gao H, et a1. 2002. Summary of deep seismic probing of the lithospheric structure across the West Kunlun-Tarim-Tianshan. Geological Bulletin of China (in Chinese), 21(1):11-18.
[3]  He R Z, Gao R, Li Q S, et a1. 2001. Corridor gravity fields and crustal density structures in Tianshan (Dushanzi)-west Kunlun (Quanshuigou) GGT.Acta Geoscientia Sinica (in Chinese), 22(6): 553-558.
[4]  Huang Y, Wu J P, Zhang T Z, et a1. 2008. Relocation of the 8.0 Wenchuan earthquake and its aftershock sequence.Science in China (Series D),38(10):1242-1249.
[5]  Lei J S, Zhang G W, Xie F R, et al. 2012. Relocation of the 10 March 2011 Yingjiang, China, earthquake sequence and its tectonic implications. Earthquake Science, 25: 103-110.
[6]  Liu C, Xu L S, Chen Y T. 2010. Quick moment tensor solution for 14 April 2010 Yushu, Qinghai, earthquake. Acta Seismologica Sinica, 32(3): 366-368.
[7]  Myers S C, Johannesson G, Hanley W. 2007. A Bayesian hierarchical method for multiple-event seismic location. Geophysical Journal International, 171(3): 1049-1063.
[8]  Myers S C, Johannesson G, Hanley W. 2009. Incorporation of probabilistic seismic phase labels into a Bayesian multiple-event seismic locator. Geophysical Journal International, 177(1): 193-204.
[9]  Tan K, Wang Q, Shen C Y. 2004. Using geodetic data to inverse co-seismic dislocation of 2001 Kunlun earthquake. Journal of Geodesy and Geodynamics, 24(3): 47-50.
[10]  Tang M S, Ge C, Zheng Y, et a1. 2013. Feasibility analysis of short period seismograph receiver function-An example of Hotan Seismic Array, Xinjiang.Chinese J. Geophys.(in Chinese), 56(8): 2670-2680, doi: 10.6038/cjg20130816.
[11]  Tapponnier P, Peltzer G, Le Dain A Y, et al. 1982. Propagating extrusion tectonics in Asia: New insights from simple experiments with plasticine. Geology, 10(12): 611-616.
[12]  Tarantola A. 2005. Inverse problem theory and methods for model parameter estimation. SIAM.
[13]  Waldhauser F, Ellsworth W. 2000. A double-difference earthquake location algorithm: method and application to the Northern Hayward Fault, California. Bull. Seismol. Soc. Am., 90(6): 1353-1368.
[14]  Wang W M, Li L, Zhao L F, et al. 2005. Rupture process of Jiashi, Xinjiang earthquake (Ms6.5) of Feb. 24, 2003. Chinese J. Geophys. (in Chinese), 48(2): 343-351.
[15]  Wen X Z,Du F,Zhang P Z,et a1.2011. Correlation of major earthquake sequences on the northern and eastern boundaries of the Bayan Har block,and its relation to the 2008 Wenchuan earthquake.Chinese J. Geophys.(in Chinese),54(3):706-716, doi: 10.3969/j.issn.0001-5733.2011.03.010.
[16]  Xu X W, Tan X B, Wu G D, et al. 2011. Surface rupture features of the 2008 Yutian Ms7.3 earthquake and its tectonic nature. Seismology and Geology, 33(2): 462-471.
[17]  Xu X W,Yu G H,Ma W T,et a1.2008. Rupture behavior and deformation localization of the Kunlunshan earthquake (Mw7.8) and their tectonic implications.Science in China Series D: Earth Sciences,51(10):1361-1374.
[18]  Xu Y, Zhang J W, Su Y J. 2011. Imaging the rupture of 14 April, 2010 Yushu earthquake using back-projection of global subarray P-waves. Chinese J. Geophys. 54(5), 1243-1250, doi: 10.3969/j.issn.0001-5733.2011.05.013.
[19]  Zhang G W, Lei J S. 2013. Relocations of Lushan, Sichuan strong earthquake (Ms7.0) and its aftershocks. Chinese J. Geophys. 56(5): 1674-1771, doi: 10.6038/cjg20130534.
[20]  Zhang Y, Xu L S, Chen Y T, et al. 2014. Fast inversion for the rupture process of the 12 Feberuary 2014 Yutian Mw6.9 earthquake: Discussion on the impacts of focal mechanisms on rupture process inversions. Acta Seismologica Sinica, 36(2): 159-164.
[21]  Zhao C P, Chen Z L, Zheng S H.2008. Source rupture process of 3 Jiashi M6 events(1998~2003) and its correlation with the aftershock activity.Chinese J.Geophys.(in Chinese),51(4): 1093-1102.
[22]  Chen Y T, Yang Z X, Zhang Y, et al. 2013. From 2008 Wenchuan earthquake to 2013 Lushan earthquake (in Chinese). Scientia Sinica Terrae, 43(6): 1064-1072.
[23]  Deng Q D, Gao X, Chen G H, et al. 2010. Recent tectonic activity of Bayankala fault-block and the Kunlun-Wenchuan earthquake series of the Tibet Plateau. Earth Science Frontiers, (5): 163-178.
[24]  Lei J S, Zhang G W, Xie F R, 2014. The 20 April 2013 Lushan, Sichuan, mainshock, and its aftershock sequence: tectonic implications. Earthquake Science, 27(1): 15-25.
[25]  Zhou Y, Wang W M, Xiong L. 2014. Stress influences of the 12 February 2014 Yutian earthquake (Mw6.9) on surrounding faults. Submitted to Science China (Series D).

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133