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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第44卷

期数:

2022年第03期

页码:

558-567

栏目:

大地测量、遥感与地学大数据

出版日期:

2022-05-15

文章信息/Info

Title:

InSAR Monitoring and Inversion of 2021 Yangbi M_w 6.4 Earthquake in Yunnan, China

文章编号:

1672-6561(2022)03-0558-10

作者:

魏云杰¹; 王 婷²; 杨成生^2*; 吕 森²

(1. 中国地质环境监测院,北京 100081; 2. 长安大学 地质工程与测绘学院,陕西 西安 710054)

Author(s):

WEI Yun-jie¹;  WANG Ting²;  YANG Cheng-sheng^2*;  LYU Sen²

(1. China Institute of Geo-environment Monitoring, Beijing 100081, China; 2. School of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, Shaanxi, China)

关键词:

大地测量;  地震;  震源参数;  同震形变场;  InSAR;  断层参数;  库伦应力;  漾濞地震

Keywords:

geodesy;  earthquake;  earthquake source parament;  co-seismic deformation field;  InSAR;  fault parameter;  Coulomb stress;  Yangbi earthquake

分类号:

P315; P22

DOI:

10.19814/j.jese.2021.07009

文献标志码:

A

摘要:

2021年5月21日,云南漾濞地区发生M_w 6.4级地震,然而发震区的活动构造前期研究薄弱。针对此次地震开展监测与震源参数反演研究,对深入掌握漾濞地区及其邻近区域的孕震及发震机理和构造活动特征具有十分重要的科学意义。利用欧洲航天局两个轨道的Sentinel-1A SAR卫星影像获取了升、降轨的同震形变场,并利用Okada矩形弹性位错模型反演了震源参数以及同震的滑动分布。监测结果显示,同震破裂引发的最大隆升和最大下沉形变均超过10 cm。同震位错模型反演结果表明:漾濞M_w 6.4级地震是由长度12.2 km、宽度5.0 km、走向132°、倾角83°的断层引发的; 此次地震是一次显著的右旋走滑运动的破裂事件,其平均滑动量为0.19 m,平均滑动角为-153.6°,矩震级为M_w 6.1,与美国地质调查局(USGS)、全球矩心矩张量(GCMT)计划等公布的震源机制解结果一致。同时,同震库伦应力变化计算结果显示,同震引发的库伦应力变化为4.21×10²⁵ dyne·cm^-1,相当于矩震级M_w 6.38,并且库伦应力分布反映出此次地震以应力释放为主,进一步触发走滑地震的可能性不大。

Abstract:

On May 21, 2021, Yangbi M_w 6.4 earthquake occurred in Dali area of Yunnan, China. However, the pre-research on the geological structure in the seismogenic area of this earthquake is weak. It is scientific significance for the in-depth understanding of the seismogenic, seismogenic mechanism and characteristics of tectonic activity in Yangbi area and its adjacent areas to monitoring and inversing source parameter for this earthquake. The Sentinel-1A SAR satellite images of ESA were used to obtain the co-seismic deformation field of the earthquake from different orbits, and the Okada rectangle elastic dislocation model was used to invert the earthquake source parameters and the co-seismic slip distribution. The results show that the maximum uplift and maximum subsidence deformation caused by co-seismic rupture are both over 10 cm. The inversion results of the co-seismic show that the earthquake is caused by the rupture of a fault with a length of 12.2 km, a width of 5.0 km, a strike of 132° and a dip angle of 83°; the earthquake is a significant right-lateral strike-slip movement. The average slip is 0.19 m and the average slip angle is -153.6°, and the magnitude is M_w 6.1, which is consistent with the focal mechanism solution published by USGS and GCMT. At the same time, Coulomb stress of co-seismic is 4.21×10²⁵ dyne·cm^-1, which is equivalent to M_w 6.38; and Coulomb stress distribution reflects that the earthquake is dominated by stress release, which further triggers strike-slip earthquake unlikely.

参考文献/References:

[1] MASSONNET D,ROSSI M,CARMONA C,et al.The Displacement Field of the Landers Earthquake Mapped by Radar Interferometry[J].Nature,1993,364:138-142.
[2] 单新建,马 瑾,王长林,等.利用星载D-InSAR技术获取的地表形变场提取玛尼地震震源断层参数[J].中国科学:D辑,地球科学,2002,32(10):837-844.
SHAN Xin-jian,MA Jin,WANG Chang-lin,et al.Co-seismic Ground Deformation and Source Parameters of Mani M 7.9 Earthquake Inferred from Spaceborne D-InSAR Observation Data[J].Science in China:Series D,Earth Sciences,2002,32(10):837-844.
[3] 万永革,沈正康,王 敏,等.根据GPS和InSAR数据反演2001年昆仑山口西地震同震破裂分布[J].地球物理学报,2008,51(4):1074-1084.
WAN Yong-ge,SHEN Zheng-kang,WANG Min,et al.Co-seismic Slip Distribution of the 2001 Kunlun Mountain Pass West Earthquake Constrained Using GPS and InSAR Data[J].Chinese Journal of Geophysics,2008,51(4):1074-1084.
[4] 屠泓为,汪荣江,刁法启,等.运用SDM方法研究2001年昆仑山口西M_s 8.1地震破裂分布:GPS和InSAR联合反演的结果[J].地球物理学报,2016,59(6):2103-2112.
TU Hong-wei,WANG Rong-jiang,DIAO Fa-qi,et al.Slip Model of the 2001 Kunlun Mountain M_s 8.1 Earthquake by SDM:Joint Inversion from GPS and InSAR Data[J].Chinese Journal of Geophysics,2016,59(6):2103-2112.
[5] 单新建,屈春燕,宋小刚,等.汶川M_s 8.0级地震InSAR同震形变场观测与研究[J].地球物理学报,2009,52(2):496-504.
SHAN Xin-jian,QU Chun-yan,SONG Xiao-gang,et al.Co-seismic Surface Deformation Caused by the Wenchuan M_s 8.0 Earthquake from InSAR Data Analysis[J].Chinese Journal of Geophysics,2009,52(2):496-504.
[6] 季灵运,刘传金,徐 晶,等.九寨沟M_s 7.0地震的InSAR观测及发震构造分析[J].地球物理学报,2017,60(10):4069-4082.
JI Ling-yun,LIU Chuan-jin,XU Jing,et al.InSAR Observation and Inversion of the Seismogenic Fault for the 2017 Jiuzhaigou M_s 7.0 Earthquake in China[J].Chinese Journal of Geophysics,2017,60(10):4069-4082.
[7] 单新建,屈春燕,龚文瑜,等.2017年8月8日四川九寨沟M_s 7.0级地震InSAR同震形变场及断层滑动分布反演[J].地球物理学报,2017,60(12):4527-4536.
SHAN Xin-jian,QU Chun-yan,GONG Wen-yu,et al.Co-seismic Deformation Field of the Jiuzhaigou M_s 7.0 Earthquake from Sentinel-1A InSAR Data and Fault Slip Inversion[J].Chinese Journal of Geophy-sics,2017,60(12):4527-4536.
[8] 温少妍,李成龙,李 金.2020年1月19日新疆伽师M_s 6.4地震InSAR同震形变场特征及发震构造初步探讨[J].内陆地震,2020,34(1):1-9.
WEN Shao-yan,LI Cheng-long,LI Jin.Preliminary Discussion on Characteristics of Co-seismic Deformation Field and InSAR Seismogenic Structure for Xinjiang Jiashi M_s 6.4 Earthquake on January 19th,2020[J].Inland Earthquake,2020,34(1):1-9.
[9] 于书媛,骆佳骥,杨源源,等.InSAR数据约束的2021年5月21日云南漾濞M_s 6.4地震发震构造研究[J].地震工程学报,2021,43(4):777-783.
YU Shu-yuan,LUO Jia-ji,YANG Yuan-yuan,et al.Seismogenic Structure of the Yangbi,Yunnan M_s 6.4 Earthquake on May 21,2021 Constrained by InSAR Data[J].China Earthquake Engineering Journal,2021,43(4):777-783.
[10] 朱俊文,姚赟胜,张 波.基于Sentinel-1A数据反演漾濞M_s 6.4地震的同震形变场及断层几何参数[J].地震工程学报,2021,43(4):784-790.
ZHU Jun-wen,YAO Yun-sheng,ZHANG Bo.Inversion of the Coseismic Deformation Field and Fault Geometric Parameters of the Yangbi M_s 6.4 Earthquake Based on Sentinel-1A Data[J].China Earthquake Engineering Journal,2021,43(4):784-790.
[11] 张克亮,甘卫军,梁诗明,等.2021年5月21日M_s 6.4漾濞地震GNSS同震变形场及其约束反演的破裂滑动分布[J].地球物理学报,2021,64(7):2253-2266.
ZHANG Ke-liang,GAN Wei-jun,LIANG Shi-ming,et al.Coseismic Displacement and Slip Distribution of the 2021 May 21,M_s 6.4,Yangbi Earthquake Derived from GNSS Observations[J].Chinese Journal of Geophysics,2021,64(7):2253-2266.
[12] 王光明,吴中海,彭关灵,等.2021年5月21日漾濞M_s 6.4地震的发震断层及其破裂特征:地震序列的重定位分析结果[J].地质力学学报,2021,27(4):662-678.
WANG Guang-ming,WU Zhong-hai,PENG Guan-ling,et al.Seismogenic Fault and Its Rupture Characteristics of the 21 May,2021 Yangbi M_s 6.4 Earthquake:Analysis Results from the Relocation of the Earthquake Sequence[J].Journal of Geomechanics,2021,27(4):662-678.
[13] 王绍俊,刘云华,单新建,等.2021年云南漾濞M_s 6.4地震同震地表形变与断层滑动分布[J].地震地质,2021,43(3):692-705.
WANG Shao-jun,LIU Yun-hua,SHAN Xin-jian,et al.Co-seismic Surface Deformation and Slip Models of the 2021 M_s 6.4 Yangbi(Yunnan,China)Earthquake[J].Seismology and Geology,2021,43(3):692-705.
[14] 李大虎,丁志峰,吴萍萍,等.2021年5月21日云南漾濞M_s 6.4地震震区地壳结构特征与孕震背景[J].地球物理学报,2021,64(9):3083-3100.
LI Da-hu,DING Zhi-feng,WU Ping-ping,et al.The Characteristics of Crustal Structure and Seismogenic Background of Yangbi M_s 6.4 Earthquake on May 21,2021 in Yunnan Province[J].Chinese Journal of Geophysics,2021,64(9):3083-3100.
[15] 杨九元,温扬茂,许才军.2021年5月21日云南漾濞M_s 6.4地震:一次破裂在隐伏断层上的潜走滑事件[J].地球物理学报,2021,64(9):3101-3110.
YANG Jiu-yuan,WEN Yang-mao,XU Cai-jun.The 21 May 2021 M_s 6.4 Yangbi(Yunnan)Earthquake:A Shallow Strike-slip Event Rupturing in a Blind Fault[J].Chinese Journal of Geophysics,2021,64(9):3101-3110.
[16] 段梦乔,赵翠萍,周连庆,等.2021年5月21日云南漾濞M_s 6.4地震序列发震构造[J].地球物理学报,2021,64(9):3111-3125.
DUAN Meng-qiao,ZHAO Cui-ping,ZHOU Lian-qing,et al.Seismogenic Structure of the 21 May 2021 M_s 6.4 Yunnan Yangbi Earthquake Sequence[J].Chinese Journal of Geophysics,2021,64(9):3111-3125.
[17] 龙 锋,祁玉萍,易桂喜,等.2021年5月21日云南漾濞M_s 6.4地震序列重新定位与发震构造分析[J].地球物理学报,2021,64(8):2631-2646.
LONG Feng,QI Yu-ping,YI Gui-xi,et al.Relocation of the M_s 6.4 Yangbi Earthquake Sequence on May 21,2021 in Yunnan Province and Its Seismogenic St-ructure Analysis[J].Chinese Journal of Geophysics,2021,64(8):2631-2646.
[18] 常祖峰,常 昊,臧 阳,等.维西—乔后断裂新活动特征及其与红河断裂的关系[J].地质力学学报,2016,22(3):517-530.
CHANG Zu-feng,CHANG Hao,ZANG Yang,et al.New Activity Characteristics of Weixi-Qiaohou Fault and Its Relationship with Honghe Fault[J].Journal of Geomechanics,2016,22(3):517-530.
[19] WERNER C,WEGMULLER U,STROZZI T,et al.Gamma SAR and Interferometric Processing Software[J].ESA Bulletin,2000,104:15-23.
[20] GOLDSTEIN R M,WERNER C L.Radar Interferogram Filtering for Geophysical Applications[J].Geophysics Resource Letter,1998,25:4035-4038.
[21] ROSEN P A,HENSLEY S,ZEBKER H A,et al.Surface Deformation and Coherence Measurements of Ki-lauea Volcano,Hawaii,from SIR-C Radar Interfero-metry[J].Journal of Geophysical Research:Planets,1996,101(E10):23109-23125.
[22] EINEDER M,HUBIG M,MILCKE B.Unwrapping Large Interferograms Using the Minimum Cost Flow Algorithm[C]∥IEEE.Proceedings of the IEEE International Geoscience and Remote Sensing Symposium.Seattle:IEEE,1998:187-199.
[23] 杨成生,张 勤,曲菲霏,等.基于相位回归性分析的SAR差分干涉图大气延迟改正研究[J].上海国土资源,2012,33(3):11-15.
YANG Cheng-sheng,ZHANG Qin,QU Fei-fei,et al.Obtaining an Atmospheric Delay Correction for Differential SAR Interferograms Based on Regression Analysis of the Atmospheric Delay Phase[J].Shanghai Land Resource,2012,33(3):11-15.
[24] 季灵运,朱良玉,刘传金,等.InSAR同震形变场及其在震源参数确定中的应用研究进展[J].地球科学与环境学报,2021,43(3):604-620.
JI Ling-yun,ZHU Liang-yu,LIU Chuan-jin,et al.Review on InSAR-derived Coseismic Deformation and the Determination of Earthquake Source Parameters[J].Journal of Earth Sciences and Environment,2021,43(3):604-620.
[25] BAGNARD I M,HOOPER A.Inversion of Surface Deformation Data for Rapid Estimates of Source Parameters and Uncertainties:A Bayesian Approach[J].Geochemistry,Geophysics,Geosystems,2018,19(7):2194-2211.
[26] YANG C S,HAN B Q,ZHAO C Y,et al.Co- and Post-seismic Deformation Mechanisms of the M_w 7.3 Iran Earthquake(2017)Revealed by Sentinel-1 InSAR Observations[J].Remote Sensing,2019,11(4):11040418.
[27] LOHMAN R B,SIMONS M.Some Thoughts on the Use of InSAR Data to Constrain Models of Surface Deformation:Noise Structure and Data Downsampling[J].Geochemistry,Geophysics,Geosystems,2005,6(1):Q01007.
[28] WANG R J,DIAO F Q,HOECHNER A.SDM:A Geodetic Inversion Code Incorporating with Layered Cru-st Structure and Curved Fault Geometry[R].Vienna:EGU,2013.
[29] WANG R J,PAROLAI S,ZSCHAU J,et al.The 2011 M_w 9.0 Tohoku Earthquake:Comparison of GPS and Strong-motion Data[J].Bulletin of the Seismological Society of America,2013,103:1336-1347.
[30] MOTAGH M,BAHROUDI A,HAGHIGHI M H,et al.The 18 August 2014 M_w 6.2 Mormori,Iran,Earthquake:A Thin-skinned Faulting in the Zagros Mountain Inferred from InSAR Measurements[J].Seismological Research Letters,2015,86(3):775-782.
[31] SCHOLZ C H.The Mechanics of Earthquakes and Faulting[M].New York:Cambridge University Pre-ss,1990.
[32] PINAR A,HONKURA Y,KUGE K.Seismic Activity Triggered by the 1999 Izmit Earthquake and Its Implications for the Assessment of Future Seismic Risk[J].Geophysical Journal International,2001,146(1):F1-F7.
[33] TODA S J,STEIN R S,RICHARDS-DINGER K,et al.Forecasting the Evolution of Seismicity in Southern California:Animations Built on Earthquake Stress Tr-ansfer[J].Journal of Geophysical Research:Solid Ear-th,2005,110(B5):B05S16.
[34] LIN J,STEIN R S.Stress Triggering in Thrust and Subduction Earthquakes,and Stress Interaction Between the Southern San Andreas and Nearby Thrust and Strike-slip Faults[J].Journal of Geophysical Research:Solid Earth,2004,109(B2):B02303.
[35] WESSEL P,LUIS J,UIEDA L,et al.The Generic Mapping Tools Version 6[J].Geochemistry,Geophy-sics,Geosystems,2019,20(11):5556-5564.

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备注/Memo

备注/Memo:

收稿日期:2021-07-05; 修回日期:2021-10-19
基金项目:国家自然科学基金项目(42174032); 中国地质调查局地质调查项目(DD20190637); 国家重点研发计划项目(2018YFC1504805); 第二次青藏高原综合科学考察研究专题(2019QZKK0904)
作者简介:魏云杰(1973-),男,河南柘城人,正高级工程师,工学博士,E-mail:wyj1973@126.com。
*通讯作者:杨成生(1982-),男,河南新乡人,教授,博士研究生导师,工学博士,E-mail:yangchengsheng@chd.edu.cn。

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