RELOCATION OF SMALL EARTHQUAKES IN LINFEN AREA, SHANXI, CHINA

doi:10.3969/j.issn.0253-4967.2013.04.016

Abstract

Abstract: In the paper,we relocate the small earthquakes occurring in Linfen region from 1981 to 2010 by using the double-difference earthquake location algorithm. Our result shows that the distribution of relocated earthquakes is characterized by cluster activities,and most of the them occurred at the depths of 5～11km and 15～27km,which suggests that the two main seismogenic layers in this region are located in the upper and mid-upper crust. Earthquake frequency is high along both sides of the Subu Fault zone in the northern Linfen Basin,and most of the earthquakes in the north of Subu Fault zone are deeper than that in the south of Subu Fault. To some extent,this result indicates that the regional tectonic setting plays a major control role in the distribution of earthquakes. Analysis on the distribution of earthquake focal depths reveals that there exist deep faults which cut through the crust into the mantle in the middle of the Linfen Basin and connect with the active faults around the basin in the upper crust. The dislocations along the active faults on both sides of the basin are a reflex on the surface of faulting of the deep faults beneath the central basin.

Key words: the double-difference earthquake location algorithm, seismotectonics, deep faults, Linfen region

摘要： 应用双差地震定位法对临汾地区1981—2010年发生的地震进行重新定位，重定位的地震表现为丛集性分布；临汾地区地震多发生在5～11km 和15～27km 2个范围内，表明这2层是研究区的主要发震层，即基本位于地壳的中上部和中地壳层。临汾盆地北部苏堡断裂两侧地震频度高，且断裂以北多数震源深于以南地区，表现出区域构造对地震的控制作用。地震震源分布的构造成因分析表明，在临汾盆地中部有切穿地壳至地幔的深大断裂存在，盆地周边的活动断裂在上地壳与其相连，盆地两侧的活动断裂的错断活动是盆地中部深大断裂活动在地表的反映。

关键词: 双差定位法, 地震构造, 深大断裂, 临汾地区

CLC Number:

P315.63

DONG Chun-li, LI Le, ZHAO Jin-quan, LI Dong-mei, HU Yu-liang, REN Li-wei, XU Zhi-guo. RELOCATION OF SMALL EARTHQUAKES IN LINFEN AREA, SHANXI, CHINA[J]. SEISMOLOGY AND GEOLOGY, 2013, 35(4): 873-886.

董春丽, 李乐, 赵晋泉, 李冬梅, 胡玉良, 任力伟, 徐志国. 临汾地区的小震精定位分析[J]. 地震地质, 2013, 35(4): 873-886.

References

安卫平, 苏宗正, 程新原.1995.临汾盆地的横向断裂［J］.山西地震, (3-4): 68—77.
AN Wei-ping, SU Zong-zheng, CHENG Xin-yuan.1995.Lateral fractures in Linfen basin［J］.Earthquake Research in Shanxi, (3-4): 68—77(in Chinese).
毕丽思, 何宏林, 徐岳仁, 等.2011.基于高分辨率DEM的裂点序列提取和古地震序列的识别: 以霍山山前断裂为实验区［J］.地震地质, 33(4): 963—977.doi: 10.3969/j.issn.0253-4967.2011.04.019.
BI Li-si, HE Hong-lin, XU Yue-ren, et al.2011.The extraction of knickpoint series based on the high-resolution DEM data and the identification of paleo-earthquake series: A case study of the Huoshan Mts. Piedmont Fault［J］.Seismology and Geology, 33(4): 963—977(in Chinese).
陈国顺, 黄振昌, 侯廷爱, 等.1995.1695年临汾大震的发震断层及有关问题初探［J］.山西地震, (3-4): 39—42.
CHEN Guo-shun, HUANG Zhen-chang, HOU Ting-ai, et al.1995.The seismogenic fault of the 1695 Linfen earthquake and a discussion of the relevant problems［J］.Earthquake Research in Shanxi, (3-4): 39—42(in Chinese).
邓起东, 张培震, 冉勇康, 等.2003.中国活动构造与地震活动［J］.地学前缘, 10(特刊): 66—73.
DENG Qi-dong, ZHANG Pei-zhen, RAN Yong-kang, et al.2003.Active tectonics and earthquack activities in China［J］.Earth Science Frontiers, 10(Suppl): 66—73(in Chinese).
董春丽, 梁向军, 张玲, 等.2009.山西数字测震台网 "九五"、"十五"两套系统定位参数对比分析［J］.山西地震, (3): 13—20.
DONG Chun-li, LIANG Xiang-jun, ZHANG Ling, et al.2009.Comparison of location parameters from two systems of the 9th and 10th Five-year Plans of Shanxi digital seismic network［J］.Earthquake Research in Shanxi, (3): 13—20(in Chinese).
胡新亮, 刁桂林, 高景春, 等.2002.用现今小震推断洪洞、临汾2次历史大震的震源断层［J］.中国地震, 18(1): 76—85.
HU Xin-liang, DIAO Gui-ling, GAO Jing-chun, et al.2002.Application of present small earthquakes to infer the focal faults of two large historical earthquakes in Hongdong and Linfen, Shanxi Province［J］.Earthquake Research in China, 18(1): 76—85(in Chinese).
黄媛, 吴建平, 张天中, 等.2008.汶川8.0级大地震及其余震序列重定位研究［J］.中国科学(D辑), 38: 1242—1249.
HUANG Yuan, WU Jian-ping, ZHANG Tian-zhong, et al.2008.A relocation research of Wenchuan M8.0 earthquake and its aftershocks sequence［J］.Science in China(Ser D), 38: 1242—1249(in Chinese).
李乐, 陈棋福, 陈颙.2007.首都圈地震活动构造成因的小震精定位分析［J］.地球物理学进展, 22(1): 24—34.
LI Le, CHEN Qi-fu, CHEN Yong.2007.Relocated seismicity in big Beijing area and its tectonic implication［J］.Progress in Geophysics, 22(1): 24—34(in Chinese).
李斌, Reidar Lovlie, 苏朴, 等.2008.山西襄汾大柴更新统剖面划分的新观点［J］.地球物理学报, 51(4): 1040—1047.
LI Bin, Reidar Lovlie, SU Pu, et al.2008.A new stratification of the Dachai Pleistocene section, Xiangfen, Shanxi, China［J］.Chinese Journal of Geophysics, 51(4): 1040—1047(in Chinese).
刘国栋, 宋惠珍.1992.孕震层结构和物性［A］.见: 马宗晋主编. 大陆多震层研究.北京: 地震出版社.100—109.
LIU Guo-dong, SONG Hui-zhen.1992. The structure and physical property of seismogenic layer［A］.In: MA Zong-jin et al.(ed). Study of Continental Earthquake-Prone Layers. Seismological Press, Beijing.100—109(in Chinese).
马瑾, 马胜利, 刘力强, 等.2000.交叉断层的交替活动与块体运动的实验研究［J］.地震地质, 22(1): 65—73.
MA Jin, MA Sheng-li, LIU Li-qiang, et al.2000.Experimental study on alternate slip of intersecting faults and block movement［J］.Seismology and Geology, 22(1): 65—73(in Chinese).
毛桐恩, 陈锦标, 姚家榴.1996.邢台、唐山震区震源层及其顶、底部介质条件的综合分析［J］.地震学报, 18(1): 89—96.
MAO Tong-en, CHEN Jin-biao, YAO Jia-liu.1996.Comprehensive analyses of seismic source layer in Xingtai and Tangshan seismic regions and the conditions of media above and below this Layer［J］.Acta Seismologica Sinica, 18(1): 89—96(in Chinese).
莫多闻.1991.山西临汾盆地晚新生代环境演变研究［J］.北京大学学报(自然科学版), 27(6): 739—746.
MO Duo-wen.1991.The study on the late Cenozoic environment change of Linfen Basin, Shanxi Province［J］.Acta Scientiarum Nataralium(Universitatis Pekinensis), 27(6): 739—746(in Chinese).
宋美琴, 郑勇, 葛粲, 等.2012a.山西地震带中小震精确位置及其显示的山西地震构造特征［J］.地球物理学报, 55(2): 513—525.doi: 10.6038/j.issn.00015733.2012.02.014.
SONG Mei-qin, ZHENG Yong, GE Can, et al.2012a. Relocation of small to moderate earthquakes in Shanxi Province and its relation to the seismogenic structures［J］.Chinese Journal of Geophysics, 55(2): 513—525(in Chinese).
宋美琴, 郑勇, 李斌, 等.2012b.2010年1月24日山西河津-万荣M_S 4.8地震的震源机制解与发震构造探讨［J］.地震学报, 34(1): 111—117.
SONG Mei-qin, ZHENG Yong, LI Bin, et al.2012b.Discussion on focal mechanism solutions and seismogenic structure of 24 Jan 2010 Hejin-Wanrong, Shanxi, M_S4.8 earthquake［J］.Acta Seismologica Sinica, 34(1): 111—117.
苏怡之, 王进英, 张家声, 等.1993.临汾盆地现代地震活动特征及其与深部构造关系初探［J］.地震, (6): 42—47.
SU Yi-zhi, WANG Jin-ying, ZHANG Jia-sheng, et al.1993.Preliminary discussion on recent seismicity characteristics and its relation with deep-seated structures in Linfen Basin［J］.Earthquake, (6): 42—47(in Chinese).
王健, 吴宣, 张晓东, 等.2004.1303年山西洪洞8级地震高烈度区内地震活动特征及其物理意义［J］.地震学报, 26(4): 347—354.
WANG Jian, WU Xuan, ZHANG Xiao-dong, et al.2004.Seismic characteristics near the epicenter of the 1 303 Hongdong M=8 earthquake［J］.Acta Seismologica Sinica, 26(4): 347—354(in Chinese).
王西文.1990.重磁反演在研究临汾盆地深部构造中的应用［J］.西安石油学院学报, 5(2): 7—11.
WANG Xi-wen.1990.Application of gravity and magnetic inversion in studying the deep tectonics of Linfeng basin［J］.Journal of Xi'an Petroleum Institute, 5(2): 7—11(in Chinese).
邢集善, 姚典群, 黎明.1989.试从地球物理资料论山西地堑系的构造特征［J］.山西地质, 4(2): 96—104.
XING Ji-shan, YAO Dian-qun, LI Ming.1989.A discussion on the structural characteristics of Shanxi graben system based on the geophysical data［J］.Shanxi Geology, 4(2): 96—104(in Chinese).
许建红, 谢新生, 孙昌斌.2011.山西罗云山山前断裂带中段龙祠—峪口全新世活动证据［J］.地震地质, 33(4): 855—864.doi: 10.3969/j.issn.0253-4967.2011.04.010.
XU Jian-hong, XIE Xin-sheng, SUN Chang-bin.2011.The Holocene active evidence on the Longci-Yukou segment of Luoyunshan frontal fault zone, Shanxi［J］.Seismology and Geology, 33(4): 855—864(in Chinese).
杨智娴, 陈运泰, 郑月军, 等.2OO3.双差地震定位法在中国中西部地区地震精确定位中的应用［J］.中国科学(D辑), 33(增刊): 129—134.
YANG Zhi-xian, CHEN Yun-tai, ZHENG Yue-jun, et al.2003.Accurate relocation of earthquakes in central-western China using the double-difference earthquake location algorithm［J］.Science in China(Ser D), 33(suppl): 129—134(in Chinese).
杨主恩, 林卓然.1992.多震层次断层的判别标志［A］.见: 马宗晋主编. 大陆多震层研究.北京: 地震出版社.346—353.
YANG Zhu-en, LIN Zhuo-ran.1992.Discrimination criteria for sub-faults in earthquake prone layer［A］.In: MA Zong-jin et al.(ed).Study of Continental Earthquake-Prone Layer. Seismological Press, Beijing.346—353(in Chinese).
殷娜, 韩军青.2010.山西地震带公元1000以来M≥6地震发生时空规律探讨［J］.科技情报开发与经济, 20(18): 161—163.
YIN Na, HAN Jun-qing.2010.Probe into the space-time occurrence laws of the earthquakes(M≥6)since 1000AD in Shanxi seismic belt［J］.Sci-Tech Information Development & Economy, 20(18): 161—163(in Chinese).
张玲, 梁向军, 董春丽, 等.2010.山西数字地震台网监测能力分析［J］.山西地震, (4): 11—16.
ZHANG Ling, LIANG Xiang-jun, DONG Chun-li, et al.2010.Monitoring ability of Shanxi digital seismic network［J］.Earthquake Research in Shanxi, (4): 11—16(in Chinese).
赵晓云, 李自红, 闫小兵, 等.2011.基于临汾2次强震史料与GIS技术对未来强震灾害预测评估［J］.地震地质, 33(3): 568—576.doi: 10.3969/j.issn.0253-4967.2011.03.007.
ZHAO Xiao-yun, LI Zi-hong, YAN Xiao-bing, et al.2011.Seismic disaster assessment and prediction based on historical materials of two strong earthquakes in Linfen region and GIS technology［J］.Seismology and Geology, 33(3): 568—576(in Chinese).
赵旭, 李强, 刘瑞丰, 等.2009.三峡库区地震精定位中确定速度模型的方法［J］.地震地磁观测与研究, 30(3): 27—35.
ZHAO Xu, LI Qiang, LIU Rui-feng, et al.2009.Methods of determining velocity model for precise location in the Three Gorges Reservoir［J］.Seismological and Geomagnetic Observation and Research, 30(3): 27—35(in Chinese).
朱艾斓, 徐锡伟, 胡平, 等.2005a.首都圈地区小震重新定位及其在地震构造研究中的应用［J］.地质论评, 51(3): 268—274.
ZHU Ai-lan, XU Xi-wei, HU Ping, et al.2005a. Relocation of small earthquakes in Beijing area and its implication to seismotectonics［J］.Geological Review, 51(3): 268—274(in Chinese).
朱艾斓, 徐锡伟, 周永胜, 等.2005b.川西地区小震重新定位及其活动构造意义［J］.地球物理学报, 48(3): 629—636.
ZHU Ai-lan, XU Xi-wei, ZHOU Yong-sheng, et al.2005b. Relocation of small earthquakes in western Sichuan, China and its implications for active tectonics［J］.Chinese Journal of Jeophysics, 48(3): 629—636(in Chinese).
朱艾斓, 徐锡伟, 胡平, 等.2005c.首都圈地区b值随震源深度的变化: 对地震成核的意义［J］.科学通报, 50(8): 788—792.
ZHU Ai-lan, XU Xi-wei, HU Ping, et al.2005c.Variation of b value with hypocentral depth in Beijing area: Implications for earthquake nucleation［J］.Chinese Science Bulletin, 50(8): 788—792(in Chinese).
朱艾斓, 解朝娣, 徐锡伟, 等.2010.鄂尔多斯块体周缘地区近期地震活动与汶川地震应力触发作用的关系［J］.地学前缘, 17(5): 206—214.
ZHU Ai-lan, XIE Zhao-di, XU Xi-wei, et al.2010.Investigation on the possible triggered seismicity in the peripheral areas of the Ordos block by the Wenchuan earthquake［J］.Earth Science Frontiers, 17(5): 206—214(in Chinese).
祝治平, 张建狮, 张成科, 等.1999.山西中南部壳幔结构研究［J］.地震学报, 21(1): 42—49.
ZHU Zhi-ping, ZHANG Jian-shi, ZHANG Cheng-ke, et al.1999.Study on the crust-mantle structure in the central and southern parts of Shanxi［J］.Acta Seismologica Sinica, 21(1): 42—49(in Chinese).
Aki K.Richards P G.1980.Quantitative Seismology, Theory and Methods, Vols 1&2［M］.New York: W H Freeman.932.
Geiger L.1910.Herdbestim ung bei Erdbeben aus den Ankunftszeiten［J］.K Ges Wiss G6tt, 4: 331—349.
Klein F W.1978.Hypocenter location program HYPOINVERSE PartⅠ, Users guide to versions 1 2 3 and 4.U.S.Geol Surv Open-File Rept, 78—649.
Lay T, Wallace T C.1995.Modern Global Seismology［M］.San Diego: Academic Press.521.
Waldhauser F, Ellsworth W L.2000.A double-difference earthquake location algorithm: Method and application to the northern Hayward Fault, California［J］.Bul1 Seism Soc Am, 90: 1353—1368.

[1]	HAN Zhu-jun, Nicola Litchfield, RAN Hong-liu, YUAN Ren-mao, GUO Peng, Robert M Langridge, Russ J Van Dissen. PRIMARILY STUDY ON FEATURES OF SURFACE RUPTURES INDUCED BY THE 2016 M_W7.8 KARKOURA EARTHQUAKE, NEW ZEALAND [J]. SEISMOLOGY AND GEOLOGY, 2017, 39(4): 675-688.
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[4]	DENG Qi-dong. SOME THOUGHTS ON THE M_S 8.0 WENCHUAN, SICHUAN EARTHQUAKE [J]. SEISMOLOGY AND GEOLOGY, 2008, 30(4): 811-827.
[5]	ZHU Ai-lan, XU Xi-wei, DIAO Gui-ling, SU Jin-rong, FENG Xiang-dong, SUN Qing, WANG Ya-li. RELOCATION OF THE M_S8.0 WENCHUAN EARTHQUAKE SEQUENCE IN PART:PRELIMINARY SEISMOTECTONIC ANALYSIS [J]. SEISMOLOGY AND GEOLOGY, 2008, 30(3): 759-767.
[6]	TAN Wen-bin, HE Chang-rong. FRICTION CONSTITUTIVE PARAMETERS OF MAFIC ROCK AND POSSIBILITY OF EARTHQUAKE NUCLEATION IN THE LOWER CRUST [J]. SEISMOLOGY AND EGOLOGY, 2007, 29(1): 161-171.
[7]	Lu Haojiang. BACKGROUND OF SEISMOTECTONICS OF MAJOR EARTHQUAKES IN THE SEA AREA SOUTH-EAST OF JINMEN [J]. SEISMOLOGY AND EGOLOGY, 2000, 22(2): 104-110.
[8]	Xu Jie, Song Changqing, Chu Quanzhi. PRELIMINARY STUDY ON THE SEISMOTECTONIC CHARACTERS OF THE ZHANGJIAKOUPENGLAI FAULT ZONE [J]. SEISMOLOGY AND GEOLOGY, 1998, 20(2): 146-154.
[9]	Xu Xiwei, Ran Yongkang, Zhou Bengang, Yin Gonming, Li Jianhua, Liu Wuzhou. SEISMOTECTONICS AND MACRODAMAGE FEATURES OF THE ZHANGBEI SHANGYI EARTHQUAKE [J]. SEISMOLOGY AND GEOLOGY, 1998, 20(2): 135-145.
[10]	Xu Jie, Niu Luanfang, Wang Chunhua, Han Zhujun. TANGSHAN-HEJIAN-CIXIAN NEWLY-GENERATED SEISMOTECTONIC ZONE [J]. SEISMOLOGY AND GEOLOGY, 1996, 18(3): 193-198.
[11]	Zhou Bengang, He Hbnglin. NEAR-FIELD SEISMOTECTONIC STUDIES FOR NUCLEAR POWER PLANT SITING [J]. SEISMOLOGY AND GEOLOGY, 1993, 15(4): 327-332.
[12]	Yu Qin-fan, Ma Xing-yuan. RESULTS OF IMAGE PROCESSING OF AEROMAGNETIC DATA IN NORTH CHINA AND THE SEISMOTECTONIC INTERPRETATION [J]. SEISMOLOGY AND GEOLOGY, 1989, 11(4): 5-14.
[13]	Li Jian-hua. THE SEISMOTECTONIC BACKGROUND OF 1695 LINFEN M = 8 EARTHQUAKE FROM INTERPRETATION OF LANDSAT IMAGE [J]. SEISMOLOGY AND GEOLOGY, 1988, 10(3): 45-51.
[14]	Li An-ran, Han Xio-guang, Xu Young-jian. CHARACTERISTICS OF GRAVITY FIELD IN THE THREE-GORGE REGION, WESTERN HUBEI PROVINCE AND ITS SEISMOTECTONIC SIGNIFICANCE [J]. SEISMOLOGY AND GEOLOGY, 1987, 9(3): 71-78.