利用考虑地形起伏的反演方法获取2017年伊拉克MW7.3地震的断层参数及滑动分布

doi:10.12196/j.issn.1000-3274.2020.04.005

地震 ›› 2020, Vol. 40 ›› Issue (4): 63-75.doi: 10.12196/j.issn.1000-3274.2020.04.005

利用考虑地形起伏的反演方法获取2017年伊拉克M_W7.3地震的断层参数及滑动分布

余宏远¹, 李伟^2,3,4, 王文达^2,3,4

1.河西学院土木工程学院, 甘肃张掖 734000;
2.兰州交通大学测绘与地理信息学院, 甘肃兰州 730070;
3.地理国情监测技术应用国家地方联合工程研究中心, 甘肃兰州 730070;
4.甘肃省地理国情监测工程实验室, 甘肃兰州 730070

收稿日期:2019-10-13 出版日期:2020-10-30 发布日期:2020-10-23
通讯作者: 李伟, 讲师。 E-mail: geosci.wli@lzjtu.edu.cn
作者简介:余宏远(1981-), 男, 宁夏固原人, 讲师, 主要从事自然灾害可视化, 地理信息系统应用的研究。
基金资助:
河西学院横向项目(H2019037, H2018006, H2018004); 中国博士后科学基金(2019M660091XB); 甘肃省高等学校创新能力提升项目(2020A-037); 兰州交通大学青年科学研究基金(2019003); 兰州交通大学“天佑青年托举工程人才”项目

The Fault Parameter and Slip Distribution of the 2017 Iraq M_W7.3 Earthquake Based on the Improved Inversion Method Considering Topography

YU Hong-yuan¹, LI Wei^2,3,4, WANG Wen-da^2,3,4

1. School of Civil Engineering, Hexi University, Zhangye 734000, China;
2. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070;
3. National and Local Joint Engineering Research Center forGeographic Monitoring Technology Application, Lanzhou 730070;
4. Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou 730070

Received:2019-10-13 Online:2020-10-30 Published:2020-10-23

摘要/Abstract

摘要： 2017年11月13日伊拉克北部地区苏莱曼尼亚省发生了M_W7.3地震, 造成了重大的人员和经济损失。本文利用升降轨的Sentinel-1和降轨的ALOS-2卫星的SAR数据, 通过差分干涉测量技术获取了该地震的同震形变场, 联合DInSAR和MAI技术, 采用抗差最小二乘法求解该地震的同震三维形变场。基于改进的考虑地形起伏的均匀位错模型反演确定了发震断层的断层参数, 最后基于非均匀位错模型得到了发震断层的分布式滑动分布模型。结果显示: ALOS-2卫星降轨轨道观测到的伊拉克地震引起的LOS向地表形变最大为55.8 cm抬升和47.9 cm下沉; Sentinel-1卫星观测到的伊拉克地震引起的LOS向地表形变为: 升轨轨道最大为87.9 cm抬升和17.1 cm下沉; 降轨轨道最大为55.6 cm抬升和38 cm下沉; 相对于前人的研究成果, 本文利用改进的考虑地形起伏的反演方法得到的发震断层几何参数表明发震断层为NNW走向, 倾向角为352°, 同震破裂以逆冲为主, 同时兼有一定的左旋走滑分量。基于均匀位错模型反演得到的断层滑动分布结果表明, 同震破裂未延伸至地表, 主要滑动量集中在12~18 km, 最大滑动量位于15 km深度, 达到4.3m, 反演得到的矩震级为M_W7.35, 与UGSG、 GCMT等机构给出的结果一致。

关键词: 2017年伊拉克M_W7.3地震, InSAR, 同震形变, 滑动分布, 三维形变场

Abstract: On November 12, 2017, an M_W7.3 earthquake struck Sulaimaniyah province in northern Iraq, causing heavy human and economic losses. In this paper, the co-seismic deformation field of the earthquake was obtained by differential interferometry using the ascending and descending synthetic aperture radar (SAR) data of Sentinel-1 and Alos-2 satellites, combining DInSAR and MAI technologies, the robust least-square method was used to solve the coseismic 3D deformation field of this earthquake. Based on the improved uniform dislocation model considering topography, the fault parameters of seismogenic faults were determined. Finally, the distributed slip distribution of seismogenic faults was obtained based on the non-uniform dislocation model. The results showed that the LOS deformations caused by the Iraq earthquake observed by the ALOS-2 satellite in descending orbit were a maximum of 55.8 cm uplift and 47.9 cm subsidence; the LOS deformations caused by the Iraq earthquake observed by the Sentinel-1 satellite: the maximum ascending orbit uplift of 87.9 cm and sinking of 17.1 cm; the maximum descending orbit of 55.6 cm uplift and 38cm sinking; Compared with the previous research results the geometric parameters of seismogenic faults obtained by the improved inversion method considering topography indicates that the seismogenic faults are NNW strikes. The strike azimuth angle is 352 °. The coseismic rupture is dominated by thrust and has a certain left-lateral strike-slip component. The fault slip distribution obtained from the inversion based on the uniform dislocation model shows that the coseismic rupture did not extend to the surface, the mainshock slip is concentrated at 12~18 km, and the maximum slip is at the depth of 15 km, reaching 4.3 m. The moment magnitude obtained by the inversion is M_W7.35, consistent with the results given by the UGSG and GCMT.

Key words: 2017 Iraq M_W7.3 earthquake, InSAR, Co-seismic deformation, Slip distribution, 3D deformation field

中图分类号:

P315.7

余宏远, 李伟, 王文达. 利用考虑地形起伏的反演方法获取2017年伊拉克M_W7.3地震的断层参数及滑动分布[J]. 地震, 2020, 40(4): 63-75.

YU Hong-yuan, LI Wei, WANG Wen-da. The Fault Parameter and Slip Distribution of the 2017 Iraq M_W7.3 Earthquake Based on the Improved Inversion Method Considering Topography[J]. EARTHQUAKE, 2020, 40(4): 63-75.

参考文献

[1] Avouac J P. From Geodetic Imaging of Seismic and Aseismic Fault Slip to Dynamic Modeling of the Seismic Cycle[J]. Annual Review of Earth and Planetary Sciences, 2015, 43(1): 233-271.
[2] 黄星, 洪顺英, 金红林, 等. 2015年新疆皮山M_W6.4地震发震断层和滑动分布反演[J]. 地震, 2020, 40(1): 84-98.
HUANG Xing, HONG Shun-ying, JIN Hong-lin, et al. Inversion of the seismogenic fault and fault slip distribution of the 2015 Pishan M_W6.4 earthquake[J]. Earthquake, 2020, 40(1): 84-98 (in Chinese).
[3] 余晨晖, 申旭辉, 张景发, 等. 2008年于田M_W7.2地震滑动分布反演及三维同震形变场解算[J]. 地震, 2018, 38(3): 24-34.
YU Chen-hui, SHEN Xu-hui, ZHANG Jing-fa, et al. Slip distribution inversion and 3D co-seismic deformation field calculation of the 2008 Yutian M_W7.2 earthquake[J]. Earthquake, 2018, 38(3): 24-34 (in Chinese).
[4] Massonnet D, Feigl K, Rossi M, et al. Radar interferometric mapping of deformation in the year after the Landers earthquake[J]. Nature, 1994, 369(6477): 227-230.
[5] Massonnet D, Rossi M, Carmona C, et al. The displacement field of the Landers earthquake mapped by radar interferometry[J]. Nature, 1993, 364(6433): 138-142.
[6] 宋瑞庆, 孟国杰, 张奎, 等. 2016年新疆阿克陶地震Sentinel-1 InSAR同震形变特征[J]. 地震, 2018, 38(1): 17-25.
SONG Rui-qing, MENG Guo-jie, ZHANG Kui, et al. InSAR co-seismic deformation characteristics of the 2016 Aketao earthquake using Sentiel-1 data[J]. Earthquake, 2018, 38(1): 17-25 (in Chinese).
[7] Massonnet D, Rabaute T. Radar interferometry: limits and potential[J]. IEEE Transactions on Geoscience and Remote Sensing, 1993, 31(2): 455-464.
[8] Bechor N B D, Zebker H A, et al. Measuring two-dimensional movements using a single InSAR pair[J]. Geophysical Research Letters, 2006, 33(16): L16311.
[9] Madanipour S, Ehlers T A, Yassaghi A, et al. Synchronous deformation on orogenic plateau margins: Insights from the Arabia-Eurasia collision[J]. Tectonophysics, 2013, 608: 440-451.
[10] Sandwell D, Mellors R, Tong X, et al. GMTSAR: An InSAR processing system based on generic mapping tools[R]. Office of Scientific and Technical Information Technical Reports, 2011.
[11] Goldstein R M, Werner C L. Radar interferogram filtering for geophysical applications[J]. Geophysical Research Letters, 1998, 25(21): 4035-4038.
[12] Eineder M, Hubig M, Milcke B. Unwrapping large interferograms using the minimum cost flow algorithm[A]. IGARSS′98. Sensing and Managing the Ewlronment[C]. IEEE International Geoscience and Remote Sensing Symposium, 1998: 83-87.
[13] 杨红磊, 彭军还. 基于DInSAR和MAI技术揭示地震三维形变场[J]. 地球物理学进展, 2014, 29(6): 2580-2586.
YANG Hong-lei, PENG Jun-huan. Mapping three-dimensional co-seismic deformation by combining multiple-aperture interferometry and differential interferometric synthetic aperture radar[J]. Progress in Geophysics, 2014, 29(6): 2580-2586 (in Chinese).
[14] 韩鸣, 张永志, 程冬, 等. 多视角InSAR数据解算2017两伊地震三维同震形变场[J]. 测绘通报, 2019, 50(4): 75-78+129.
HAN Ming, ZHANG Yong-zhi, CHENG Dong, et al. Calculation three-dimensional co-seismic deformation of the 2017 Iran-Iraq earthquake by multi-angle InSAR data[J]. Bulletin of Surveying and Mapping, 2019, 50(4): 75-78+129 (in Chinese).
[15] He P, Wen Y, Xu C, et al. High-quality three-dimensional displacement fields from new-generation SAR imagery: application to the 2017 Ezgeleh, Iran, earthquake[J]. Journal of Geodesy, 2019, 93(4): 573-591.
[16] 李志才, 张鹏, 金双根, 等. 基于GPS观测数据的汶川地震断层形变反演分析[J]. 测绘学报, 2009, 38(2): 108-113.
LI Zhi-cai, ZHANG Peng, JIN Shuang-gen, et al. Wenchuan earthquake deformation fault inversion and analysis based on GPS observations[J]. Acta Geodaetica et Cartographica Sinica, 2009, 38(2): 108-113 (in Chinese).
[17] 许才军, 刘洋, 温扬茂. 利用GPS资料反演汶川M_W7.9级地震滑动分布[J]. 测绘学报, 2009, 38(3): 195-201.
XU Cai-jun, LIU Yang, WEN Yang-mao. M_W7.9 Wenchuan earthquake slip distribution inversion from GPS measurements[J]. Acta Geodaetica et Cartographica Sinica, 2009, 38(3): 195-201 (in Chinese).
[18] 纪润池, 申旭辉, 张景发, 等. 中小地震三维形变场重构方法研究与同震滑动分布反演以2016年5月22日定日M_W5.3地震为例[J]. 地震, 2019, 39(4): 84-97.
JI Run-chi, SHEN Xu-hui, ZHANG Jing-fa, et al. Research on reconstruction method of three-dimensional deformation field for small and medium earthquakes and inversion of co-seismic slip distribution: a case study of May 22 2016 M_W5.3 Dingri earthquake[J]. Earthquake, 2019, 39(4): 84-97 (in Chinese).
[19] Okada Y. Internal deformation due to shear and tensile faults in a half-space[J]. Bulletin of the Seismological Society of America, 1992, 82(2): 1018-1040.
[20] Yang Y H, Chen Q, Xu Q, et al. Source model and coulomb stress change of the 2015 M_W7.8 Gorkha earthquake determined from improved inversion of geodetic surface deformation observations[J]. Journal of Geodesy, 2019, 93(3): 333-351.
[21] 温扬茂, 许才军, 何平, 等. 多源数据联合反演权比确定及玉树地震同震断层滑动分布反演研究[J]. 科技资讯, 2016, 14(18): 180.
WEN Yang-mao, XU Cai-jun, HE Ping, et al. Weight ratio determination of multi-source data and inversion of fault slip distribution of Yushu earthquake[J]. Science and Technology Information, 2016, 14(18): 180 (in Chinese).
[22] Wright T J, Lu Z, Wicks C. Source model for the M_W6.7, 23 October 2002, Nenana mountain earthquake (Alaska) from InSAR[J]. Geophysical Research Letters, 2003, 30(18):1-4.
[23] Feng W P, Samaonov S, Almeida R, et al. Geodetic constraints of the 2017 M_W7.3 Sarpol Zahab, Iran earthquake and its implications on the structure and mechanics of the north-west Zagros thrust-fold belt[J]. Geophysical Research Letters, 2018, 45: 6853-6861.
[24] 汪致恒. 基于多卫星平台InSAR的三维同震形变场提取及断层滑动反演[D]. 成都: 西南交通大学, 2018.
WANG Zhi-heng. Three-dimensional coseimic deformation extration and fault slip inversion based on multiplatform InSAR[D]. Chengdu: Southwest Jiaotong University, 2018 (in Chinese).

利用考虑地形起伏的反演方法获取2017年伊拉克M_W7.3地震的断层参数及滑动分布

The Fault Parameter and Slip Distribution of the 2017 Iraq M_W7.3 Earthquake Based on the Improved Inversion Method Considering Topography

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[15]	李奇, 孟国杰, 张奎, 苏小宁, 戴娅琼, 汪慧. 基于分区解缠方式研究2010年玉树M_W6.9地震同震形变[J]. 地震, 2015, 35(3): 22-30.

利用考虑地形起伏的反演方法获取2017年伊拉克MW7.3地震的断层参数及滑动分布

The Fault Parameter and Slip Distribution of the 2017 Iraq MW7.3 Earthquake Based on the Improved Inversion Method Considering Topography

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利用考虑地形起伏的反演方法获取2017年伊拉克M_W7.3地震的断层参数及滑动分布

The Fault Parameter and Slip Distribution of the 2017 Iraq M_W7.3 Earthquake Based on the Improved Inversion Method Considering Topography