2016年新疆阿克陶地震Sentinel-1 InSAR同震形变特征

Abstract

Abstract: An M_W6.6 earthquake occurred on November 25, 2016 in Aketao, Xinjang region. By utilizing differential interferometric synthetic aperture radar technique, we retrieved co-seismic deformation field of the Aketao earthquake through processing the ascending and descending data obtained from Sentinel-1. Besides, with the combination of deformation field features and focal mechanism solution, we inverted effectively the seismic slip distribution using steepest descent method. The results demonstrate that the ascending and the descending LOS co-seismic deformation fields have distinct characteristics on both sides of the seismogenic fault. The ascending LOS displacement is -8.2 cm and 11.2 cm, and the descending LOS displacement is -21.4 cm and 13.1 cm. The residuals between the inversed ascending/descending deformation and the InSAR measurements are effectively controlled. Most residuals are within -5 cm to 5 cm. Slips are mainly distributed 2~18 km beneath the fault plane. The maximum slip is about 0.96 m, which is located 7 km beneath the fault plane. The average slip angle is about 182.29°. The maximum slip angle is about 197.13°. The slip angle of two sliding distribution centers is close to 180°, indicating that the Aketao earthquake is a typical dextral strike-slip rupture event. When the shear modulus is set to 32 Gpa, the seismic moment M₀ of the inversed seismogenic fault is up to 9.75×10¹⁸, which is equivalent to moment magnitude M_W6.6 and is mostly identical to the focal mechanism solution.

Key words: InSAR, Co-seismic deformation field, Sentinel-1, The Aketao earthquake

CLC Number:

P315.7

SONG Rui-qing, MENG Guo-jie, ZHANG Kui, DONG Yan-fang, GONG Fa-ming. InSAR Co-seismic Deformation Characteristics of the 2016 Aketao Earthquake using Sentinel-1 Data[J]. EARTHQUAKE, 2018, 38(1): 17-25.

References

[1] 陈杰, 李涛, 孙建宝, 等. 2016年11月25日新疆阿克陶M_W6.6地震发震构造与地表破裂[J]. 地震地质, 2016, 38(4): 1160-1174.
[2] Robinson A C, Yin A, Manning C E, et al. Tectonic evolution of the northeastern Pamir: Constraints from the northern portion of the Cenozoic Kongur Shan extensional system, western China[J]. Geological Society of America Bulletin, 2004, 116(7): 953.
[3] Strecker M R, Frisch W, Hamburger M W, et al. Quaternary deformation in the Eastern Pamirs, Tadzhikistan and Kyrgyzstan[J]. Tectonics, 1995, 14(5): 1061-1079.
[4] Chevalier M, Li H, Pan J, et al. Fast slip-rate along the northern end of the Karakorum fault system, western Tibet[J]. Geophysical Research Letters, 2011, 38(22): 116-120.
[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] Peltzer G, Crampé F, King G. Evidence of nonlinear elasticity of the crust from the M_W7.6 Manyi (Tibet) earthquake[J]. Science, 1999, 286(5438): 272-276.
[7] Simons M, Fialko Y, Rivera L. Coseismic deformation from the 1999 M_W7.1 Hector Mine, California, earthquake as inferred from InSAR and GPS observations[J]. Bulletin of the Seismological Society of America, 2002, 92(4): 1390-1402.
[8] 单新建, 宋小刚, 韩宇飞, 等. 汶川M_S8.0地震前InSAR垂直形变场变化特征研究[J]. 地球物理学报, 2009, 52(11): 2739-2745.
[9] 李奇, 孟国杰, 张奎, 等. 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.
[10] 洪顺英, 刘智荣, 申旭辉, 等. 多视线向InSAR形变场约束的改则地震滑动分布反演[J]. 遥感学报, 2015, 19(2): 288-301.
[11] Wang R, Diao F, Hoechner A. SDM-A geodetic inversion code incorporating with layered crust structure and curved fault geometry[C]. EGU General Assembly Conference, EGU General Assembly Conference Abstracts, 2013.
[12] Rocca F. Perspectives of Sentinel-1 for InSAR applications[C]. Geoscience and Remote Sensing Symposium, IEEE, 2012, 53: 1738-1740.
[13] Prats-Iraola P, Scheiber R, Marotti L, et al. TOPS interferometry with TerraSAR-X[J]. IEEE Transactions on Geoscience and Remote Sensing, 2012, 50(8): 3179-3188.
[14] Scheiber R, Moreira A. Coregistration of Interferometric SAR Images using spectral diversity[J]. IEEE Transactions on Geoscience and Remote Sensing, 2000, 38(5): 2179-2191.
[15] Sansosti E, Berardino P, Manunta M, et al. Geometrical SAR image registration[J]. IEEE Transactions on Geoscience and Remote Sensing, 2006, 44(10): 2861-2870.
[16] Zhang K, Ge L, Hu Z, et al. Phase unwrapping for very large interferometric data sets[J]. IEEE Transactions on Geoscience and Remote Sensing, 2011, 49(10): 4048-4061.
[17] VPU用户手册. http:∥insar.cqu.edu.cn/vpu/user_guide_cn.html.
[18] Okada Y. Surface deformation due to shear and tensile faults in a half-space[J]. Bulletin of the Seismological Society of America, 1985, 75(4): 1135-1154.
[19] Jonsson S, Zebker H, Segall P, et al. Fault slip distribution of the 1999 M_W7.1 Hector Mine, California, earthquake, estimated from satellite radar and GPS measurements[J]. Bulletin of the Seismological Society of America, 2002, 92(4): 1377-1389.

InSAR Co-seismic Deformation Characteristics of the 2016 Aketao Earthquake using Sentinel-1 Data

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	ZHANG Xia, DONG Yan-fang, HONG Shun-ying. Research on the Three-Dimensional Deformation along the Maqin-Maqu Section of the East Kunlun Fault zone from InSAR [J]. EARTHQUAKE, 2023, 43(4): 169-184.
[2]	ZHANG Jing-ye, SUN Ke, ZHANG Guo-hong. Research Progress in Data Processing and Application of Deep Learning in InSAR Crustal Deformation Observation [J]. EARTHQUAKE, 2023, 43(2): 166-188.
[3]	XIAO Yan-feng, HU Xiao-bin, TAN Kai. Study on the Coseismic Slip Model of the 2020 Dingri M_W5.7 Earthquake in Xizang, China Constrained by InSAR Measurements [J]. EARTHQUAKE, 2022, 42(2): 140-148.
[4]	LIU Chao-ya, DONG Yan-fang, HONG Shun-ying, MENG Guo-jie, HUANG Xing, LIU Tai. InSAR Coseismic Deformation and Fault Slip Distribution Inversion of the 2020 Yutian M_W6.3 Earthquake, Xinjiang [J]. EARTHQUAKE, 2021, 41(2): 62-79.
[5]	KANG Shuai, LIU Chuan-jin, ZHU Liang-yu, JI Ling-yun. The 2020 M_S6.4 Earthquake in Yutian Xinjiang Based on the Ascending and Descending Sentinel-1 SAR Data [J]. EARTHQUAKE, 2021, 41(2): 80-91.
[6]	WANG Yong-zhe, CHEN Shi, CHEN Kun. Source Model and Tectonic Implications of the 2020 Dingri M_W5.7 Earthquake Constrained by InSAR Data [J]. EARTHQUAKE, 2021, 41(1): 116-128.
[7]	XU Xiao-bo, MA Chao, HONG Shun-ying, LIAN Da-jun, ZHANG Ying-feng. Analysis of Coseismic Displacements due to the M_W7.8 Nepal Earthquake Using InSAR Data and Inversion of Fault Slip Distribution [J]. EARTHQUAKE, 2020, 40(4): 76-89.
[8]	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.
[9]	LUO Yi, TIAN Yun-feng, ZHANG Su, ZHANG Jing-fa. Study on Characteristics of Permafrost Deformation in the Tibetan Plateau Using InSAR Technique [J]. EARTHQUAKE, 2020, 40(3): 179-188.
[10]	SUN Kai, MENG Guo-jie, HONG Shun-ying, HUANG Xing, DONG Yan-fang. Coseismic Deformation and Fault Slip Inversion of the M_S6.0 Earthquake Changning, Sichuan Based on Sentinel-1A Data [J]. EARTHQUAKE, 2020, 40(3): 15-27.
[11]	HUANG Xing, HONG Shun-ying, JIN Hong-lin, LIU Tai, DONG Yan-fang. Inversion of the Seismogenic Fault and Fault Slip Distribution of the 2015 Pishan M_W6.4 Earthquake [J]. EARTHQUAKE, 2020, 40(1): 84-98.
[12]	JI Run-chi, SHEN Xu-hui, ZHANG Jing-fa, TIAN Yun-feng. Research on Reconstruction Method of Three-Dimensional Deformation Field for Small and Medium Earthquakes and Inversion of Co-seismic Slip DistributionA case study of May 22 2016 M_W5.3 Dingri earthquake [J]. EARTHQUAKE, 2019, 39(4): 84-97.
[13]	CHEN Shu, DONG Yan-fang, HONG Shun-ying, LIU Tai. Co-seismic Deformation Field and Inversion of Fault Slip Distribution of the 2016 Aketao M_S6.7 Earthquake [J]. EARTHQUAKE, 2018, 38(3): 81-91.
[14]	YU Chen-hui, SHEN Xu-hui, ZHANG Jing-fa, LI Yong-sheng. 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.
[15]	DONG Yan-fang, HONG Shun-ying, MENG Guo-jie. Post-seismic Surface Deformation of the 2008 Wenchuan M_S8.0 Earthquake based on PSInSAR [J]. EARTHQUAKE, 2018, 38(2): 95-106.