乌鲁木齐地区中小地震震源机制解及构造应力场

Abstract

Abstract: The authors mainly analyzed the focal mechanism solution of small and moderate earthquakes and the structural stress field in Urumqi area. The result shows that the rupture characteristics of moderate earthquakes in Urumqi area were mainly the inverse faulting in natural. Their rupture planes are consistent with the structural strike. The direction of the main compressional stress P axis is NE or nearly NS. The rupture characteristics of small earthquakes in Urumqi area show a certain regional. Their rupture plane of is mainly near EW. The direction of the main compressional stress P is nearly NS. And also exists part NE or NW. It shows that the occurrence of small earthquakes is affected by both the local geotectonics and regional structural stress field.

Key words: Small and moderate earthquake, Focal mechanism solution, Structural stress field, Rupture characteristics of earthquakes, Urumqi area

CLC Number:

P315.7

LONG Hai-ying, GAO Guo-ying, NIE Xiao-hong, LI Yin-zhen. Focal mechanism solution of small and moderate earthqu- akes and structural stress field in Urumqi area[J]. EARTHQUAKE, 2007, 27(3): 89-96.

References

[1] 许忠淮, 阎明, 赵仲和. 由多个小地震推断的华北地区构造应力场的方向[J]. 地震学报, 1983, 5(3): 268-279.
[2] 吴荣辉, 张立明, 李幼铭, 等. 利用区域地震台网P、 S波振幅比资料测定北京地区小震震源参数[J]. 中国地震, 1985, 1(4): 87-93.
[3] 许忠淮, 汪素云, 黄雨蕊, 等. 由多个小震推断的青、甘和川、滇地区地壳应力场的方向特征[J]. 地球物理学报, 1987, 30(5): 476-486.
[4] 兰从欣, 刑成起, 苗春兰, 等. 近年首都圈地区中小地震震源机制解及其特征分析[J]. 华北地震科学, 2005, 23(4): 21-25.
[5] 李钦祖. 一个研究小地震机制的方法[J]. 地球物理学报, 1974, 17(3): 155-164.
[6] 李钦祖. 华北地壳应力场的基本特征[J]. 地球物理学报, 1980, 23(4): 376-387.
[7] 魏光兴, 周翠英, 赵兴兰. 华北地区中小地震应力场的优势方向[J]. 地球物理学报, 1982, 25(4): 333-343.
[8] 王永兴. 新疆构造地貌格局及其形成机制的初步研究[A]. 中国科学院新疆地理研究所. 干旱区地理学集刊(1)[C]. 北京: 科学出版社, 1989.
[9] 王盛泽. 乌鲁木齐及邻近地区的强震活动与构造应力场的基本特征[J]. 西北地震学报, 1992, 14(2): 90-94.
[10] 张红艳, 谢富仁, 崔效峰, 等. 乌鲁木齐地区活动断层滑动与现代构造应力场[J]. 中国地震, 2006, 22(3): 259-268.
[11] 许忠淮. 京津唐张地区小地震的平均释放应力场的方向特征[J]. 地震学报, 1979, 1(2): 52-58.
[12] 梁尚鸿, 李幼铭, 束沛镒, 等. 利用区域地震台网P、 S波振幅比资料测定小震震源参数[J]. 地球物理学报, 1984, 27(3): 249-258.
[13] 高国英, 曲延军. 乌鲁木齐地区构造应力场与中强震活动特征研究[J]. 内陆地震, 1998, 12(4): 296-303.
[14] 马淑田, 姚振兴, 纪晨. 用长周期面波波形拟合及P波初动方向估计中等地震的震源机制[J]. 地球物理学报, 1999, 42(6): 785-799.
[15] 刁桂苓, 于利民, 李钦祖. 震源机制解的系统聚类分析[J]. 中国地震, 1992, 8(3): 86-92.

Focal mechanism solution of small and moderate earthqu- akes and structural stress field in Urumqi area

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 11

Recommended Articles

Metrics

Comments

[1]	WANG Run-yan, WAN Yong-ge, SONG Ze-yao, GUAN Zhao-xuan. Focal Mechanism and Stress Implication on the Surrounding Region of the Jishishan, Gansu M_S6.2 Earthquake on December 18, 2023 [J]. EARTHQUAKE, 2024, 44(1): 175-184.
[2]	YANG Cheng, WAN Yong-ge. Study on Stress Field and Seismogenic Fault in Menyuan Area [J]. EARTHQUAKE, 2023, 43(3): 77-90.
[3]	HE Kang, XIE Tao, WANG Yi-kun, LI Jun-hui, ZHENG Hai-gang. Analysis of Earth Resistivity Anomaly at Hefei Seismic Station before the 2011 Anqing M4.8 Earthquake [J]. EARTHQUAKE, 2023, 43(2): 72-84.
[4]	TIAN Jian-Hui, LUO Yan. Study on the Characteristics of the Two-dimensional Tectonic Stress Field in the Focal Area of the Changning M_S6.0 Earthquake Sequence on June 17, 2019 [J]. EARTHQUAKE, 2022, 42(1): 1-17.
[5]	NI Hong-yu, LIU Ze-min, HONG De-quan, ZHAO Peng, WANG Xiao-li. Study on Stress State in the East Section of Qinling—Dabie Mountains [J]. EARTHQUAKE, 2019, 39(3): 138-148.
[6]	LI Jun, WANG Qin-Cai. Relocation and Focal Mechanism of the Songyuan Earthquake Swarm Sequence in 2013 [J]. EARTHQUAKE, 2018, 38(4): 62-73.
[7]	ZHANG Zhi-wei, RUAN Xiang, WANG Xiao-shan, WANG Yu-hang, QI Yu-ping. Spatial-temporal Evolution of Stress Fields in Sichuan Area before and after the 2008 Wenchuan and the 2013 Lushan Earthquake [J]. EARTHQUAKE, 2015, 35(4): 136-146.
[8]	SUN Ye-jun, HUANG Yun, JIANG Hao-lin, ZHAN Xiao-yan, WANG Jun, YE Bi-wen, DING Ye. Tectonic Stress Field and Segmention Characteristics in the Shandong—Jiangsu—Anhui Segment of the Tancheng—Lujiang Fault Zone [J]. EARTHQUAKE, 2015, 35(3): 66-75.
[9]	LI He, LIU Wen-bing, WANG Yi-xi, LIU Shuang-qing, GONG Yong-jian, SHANG Qing-qi, GAO Ye. Apparent Stress Changes of the 2010 Luanxian Earthquake Sequence [J]. EARTHQUAKE, 2015, 35(1): 47-54.
[10]	HU Chao-zhong, YANG Pan-xin, XIONG Ren-wei. Brief Seismotectonic Analysis of the June 24, 2012 Ninglang-Yanyuan M_S5.7 Earthquake [J]. EARTHQUAKE, 2012, 32(4): 140-147.
[11]	LONG Hai-ying, GAO Guo-ying, NIE Xiao-hong, LI Yin-zhen, SHEN Jun. The focal mechanism solution and stress field inversion of small and moderate earthquakes along middle- eastern part of northern Tianshan Reion [J]. EARTHQUAKE, 2008, 28(1): 93-99.