2013年7月22日岷县漳县6.6级地震序列震源机制解及其特征分析

Abstract

Abstract: For the Minxian-Zhangxian M_s6. 6 earthquake sequence of July 22, 2013, we invert focal mechanism solutions of the mainshock event and some strong aftershocks in the sequence using the CAP (Cut and Paste)met hod and broadband waveforms recorded by the Tenth five-year digital seismic network. The result shows that the best double solution of the M_s6. 6 mainshock is 189° ,51° and 142° for strike, dip and rake angles respectively, the other nodal plane is 305°, 61° and 46°; the character of the mainshock shows thrust with a small strike-slip component and the focal depth of the mainshock is 7 km. The advantage angel of the nodal plane II which is in the NE direction of the focal mechanism solutions of 8 aftershock events is about 52°,which shows the characteristics of large thrust components. The nodal plane II has been identified to be representative of the seismogenic fault plane of the event in consideration of the local active geologic structure, the distributions of the aftershocks and the seismic intensities. The characteristics of the focal mechanism of earthquake sequence are similar with the Lintan- Tanchang fault. In concusion, the occurrence of the Minxian- Zhangxian Mg6. 6 earthquake may correlated with activities of the Lintan- Tanchang fault.

Key words: Focal mechanism, Minxian-Zhangxian M_s6.6 earthquake, Cut and Paste method, Lintan-Tanchangfault

CLC Number:

P315.7

ZHANG Hui, ZHANG Lang ping, FENG Jian-gang. Focal Mechanism Solutions and Characteristics of the July 22,2013 Minxian-Zhangxian M_s6.6 Earthquake Sequence[J]. EARTHQUAKE, 2014, 34(4): 110-117.

References

[1] 吕坚,郑勇,倪四道,等.2005年11月26日九江一瑞昌M_s5.7.Ms4.8地震的震源机制解与发震构造研究[J].地球物理学报,2008, 51(1): 158-164.
[2] 郑勇,马宏生,吕坚.汶川地震强余震(M_s≥5.6)源机制解及其与发震构造的关系[J].中国科学(D辑), 2009, 39(4): 23-36 .
[3] 陈九辉,刘启元,李顺成,等.汶川Ms8.0地震余震序列重新定位及其地震构造研究[J].地球物理学报,2009, 52(2): 390-397.
[4] 龙锋,张永久,闻学泽,等. 2008年8月30日攀枝花一会理6.1级地震序列M_L≥4.0事件的震源机制解[J].地球物理学报,2010, 53(12): 2852-2 860.
[5] 吕坚,郑秀芬,肖健,等.2012年9月7日云南彝良M_s5.7、M_s5.6地震震源破裂特征与发震构造研究[J].地球物理学报,2013, 56(8): 2645-2 654.
[6] Zhao L S, Helmberger D V.Source estimation from broadband regional seismograms[J]. Bull Seis Soc Amer, 1994, 84(1): 91-104.
[7] ZhuL P, Rivera L A. A note on the dynamic and static displacements from a point source in multilayered media[J]. Geophys J Int, 2002, 148: 619-627.
[8] 韦生吉,倪四道,崇加军,等. 2003年8月16日赤峰地震: 一个可能发生在下地壳的地震?[J].地球物理学报,2009, 52(1): 111-119.
[9] 黄建平,倪四道,傅容珊,等.综合近震及远震波形反演2006文安地震(M_w5.1)的震源机制解[J]. 地球物理学报,2009,52(1): 120-130.
[10] 谢祖军,郑勇,倪四道,等.2011年1月19日安庆M_L4.8地震的震源机制解和深度研究[J].地球物理学报,2012, 55(5): 1624-1 634.
[11] 韩立波,蒋长胜,包丰. 2010年河南太康M_s4.6地震序列震源参数的精确确定[J]. 地球物理学报,2012, 55(9): 2793-2981.
[12] 张辉,王熠熙. 2012年5月3日金塔—阿拉善盟5.4级地震震源机制解[J].西北地震学报,2012,34(2): 205-206.
[13] 徐辉,张辉.2013年7月27日文县4.5级地震震源机制解[J]. 地震工程学报,2013, 35(3): 463-464.
[14] 李清河,郭建康,周民都,等,成县一西吉剖面地壳速度结构[J].西北地震学报,1991, 13(增刊): 37-43.
[15] 闵祥仪,周民都,郭建康,等,灵台一阿木去乎剖面地壳速度结构[J].西北地震学报,1991, 13(增刊): 29-36.
[16] 李松林,张先康,张成科,等.玛沁一兰州一靖边地震测深剖面速度结构的初步研究[J].地物理学报,2002,45(2): 210-217.
[17] 陈九辉,刘启元,李顺成,等.青藏高原东北缘一鄂尔多斯地块地壳上地幔S波速度结构[J].地球物理学报,2005,48(2): 333-342.
[18] 李永华,吴庆举,安张辉,等.青藏高原东北缘地壳S波速度结构与泊松比及其意义[J].地球物理学报,2006, 49(5): 1 359-1368.
[19] Shen X Z, Mei X P, Zhang Y S.The crustal and upper mantle structures beneath the nor theastern margin of Tibet[J]. Bull Seismol Soc Am, 2011, 101(6): 2782-2795 .
[20] 许忠淮,汪素云,裴顺平.青藏高原东北缘地区Pn波速度的横向变化[J].地震学报,2003,25(1): 24-31.
[21] 李少华,王彦宾,梁子斌,等,甘肃东南部地壳速度结构的区域地震波形反演[J].地球物理学报,2012,55(4): 1 186-1 197.
[22] 袁道阳, 张培震,刘百篪,等.青藏高原东北缘晚第四纪活动构造的几何图像与构造转换[J].地质学报,2004, 78(2): 270-278.
[23] Tapponnier P, XuZ Q, Roger F, et al. Oblique steque stepwise rise and growth of the Tiber plateau[J]. Science, 2001, 294(5547): 1671-1 677.
[23] 张培震,王敏,甘卫军,等.GPS观测的活动断裂滑动速率及其对现今大陆动力作用的制约[J].地学前缘,2003,10(特刊): 81-92.
[24] 甘卫军, 沈正康,张培震,等.青藏高原地壳水平差异运动的GPS观测研究[J].大地测量与地球动力学,2004,24(1): 29-35.
[25] 郑文俊,刘小凤,赵广望,等.2003年11月13日甘肃岷县Ms5.2地震基本特征[J].西北地震学报,2005, 27(1): 61-65.
[26] 郑文俊, 雷中生,袁道阳,等.1837年甘肃岷县北6级地震考证与发震构造分析[J].地震,2007,27(1): 120-130.

Focal Mechanism Solutions and Characteristics of the July 22,2013 Minxian-Zhangxian M_s6.6 Earthquake Sequence

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Focal Mechanism Solutions and Characteristics of the July 22,2013 Minxian-Zhangxian Ms6.6 Earthquake Sequence

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Focal Mechanism Solutions and Characteristics of the July 22,2013 Minxian-Zhangxian M_s6.6 Earthquake Sequence