Volume 44 Issue 3
Jun.  2022
Turn off MathJax
Article Contents
Jiang Z Q,Yang Y H,Chen Q,Xu Q,Xu L,Huang X M. 2022. Afterslip distribution of 2017 Iran MW7.3 earthquake and its triggering effects on the 2018 MW6.0 earthquake. Acta Seismologica Sinica,44(3):452−466 doi: 10.11939/jass.20200140
Citation: Jiang Z Q,Yang Y H,Chen Q,Xu Q,Xu L,Huang X M. 2022. Afterslip distribution of 2017 Iran MW7.3 earthquake and its triggering effects on the 2018 MW6.0 earthquake. Acta Seismologica Sinica44(3):452−466 doi: 10.11939/jass.20200140

Afterslip distribution of 2017 Iran MW7.3 earthquake and its triggering effects on the 2018 MW6.0 earthquake

doi: 10.11939/jass.20200140
  • Received Date: 2020-08-18
  • Rev Recd Date: 2020-12-15
  • Available Online: 2021-12-06
  • Publish Date: 2022-06-27
  • In this study, a set of radar images acquired by the Sentinel-1 satellite that covers the interested seismically-effected area were collected. The time-series surface deformation of the 283-day time span after the 2017 Sarpol Zahab, Iran, MW7.3 earthquake was extracted by using small baseline subset technique, then the two-step procedure inversion is carried out to obtain the afterslip distribution. In order to analyze the triggering effects of the 2017 strong earthquake and its post-seismic faulting on the 2018 Javanrud MW6.0 earthquake, the coseismic deformation field covering the whole MW6.0 earthquake region was obtained by using differential interferometry technique, and the inversion results of seismogenic fault parameters were used as receiving fault parameters for stress calculation. The results show that the post-seismic deformation of the Sarpol Zahab earthquake is mainly dominated by the afterslip effect. 283 days after the earthquake, the accumulative slip of the after-slip model reaches up to 0.7 m. The coseismic source model of the Javanrud MW6.0 earthquake indicates that the seismogenic fault strike is 355.6°, the dip angle is 89.4°, and the rupture of coseismic fault is characterized by the right-lateral strike-slip together with some normal dip-slip component. Moreover, the calculated Coulomb stress change suggests that the MW7.3 earthquake and its afterslip have triggering effect on the subsequent Javanrud MW6.0 earthquake, and the occurrence of Javanrud earthquake could also be contributed by the regional plate activity.

     

  • loading
  • [1]
    Hao P,Fu Z X,Tian Q J,Liu J,Liu G P. 2004. Large aftershocks triggering by Coulomb failure stress following the 2001 MS=8.1 great Kunlun earthquake[J]. Acta Seismologica Sinica,26(1):30–37 (in Chinese).
    [2]
    He K F,Zhao B,Du R L. 2019. Post-seismic deformation associated with the 2008 Wenchuan earthquake by long-term GPS data[J]. Journal of Geodesy and Geodynamics,39(2):122–126 (in Chinese).
    [3]
    Ji Z B,Wang Q,Wang H T,Xie C D. 2014. Impact of complete Coulomb failure stress changes of the 2008 Xinjiang Yutian MS7.3 earthquake on the subsequent earthquakes[J]. Acta Seismologica Sinica,36(6):997–1009 (in Chinese).
    [4]
    Li J,Zhan W H,Zhu J J,Sun J,Feng Y C,Jiang L T,Guo L,Tang Q Q. 2017. A preliminary study on static stress triggering effects on Manila subduction zone by the Philippine MW7.7 earthquake 1990[J]. Marine Geology &Quaternary Geology,37(6):93–99 (in Chinese).
    [5]
    Shan B,Li J H,Han L B,Fang L H,Yang S,Jin B K,Zheng Y,Xiong X. 2012. Coseismic Coulomb stress change caused by 2010 MS=7.1 Yushu earthquake and its influence to 2011 MS=5.2 Nangqên earthquake[J]. Chinese Journal of Geophysics,55(9):3028–3042 (in Chinese).
    [6]
    Wan Y G,Wu Z L,Zhou G W,Huang J. 2000. “Stress triggering” between different rupture events in several earthquakes[J]. Acta Seismologica Sinica,22(6):568–576 (in Chinese).
    [7]
    Wan Y G,Shen Z K,Lan C X. 2005. Study on displacement field generated by aftershocks in Landers seismic fault plane and its adjacent areas[J]. Acta Seismologica Sinica,27(2):139–146 (in Chinese).
    [8]
    Wan Y G,Shen Z K,Sheng S Z,Xu X F. 2009. The influence of 2008 Wenchuan earthquake on surrounding faults[J]. Acta Seismologica Sinica,31(2):128–139 (in Chinese).
    [9]
    Wen L,Zhang G Y,Li Y J,Wen Z X,Zhang Q,Zhao Y. 2015. Structure-deformation features of the Zagros fold and thrust belt[J]. Chinese Journal of Geology,50(2):653–664 (in Chinese).
    [10]
    Yang B C,Qin S Q,Xue L,Zhang K. 2018. Identification of seismic type of 2017 Iraq MW7.3 earthquake and analysis of its post-quake trend[J]. Chinese Journal of Geophysics,61(2):616–624 (in Chinese).
    [11]
    Zhang Q Y,Li Y S,Zhang J F. 2020. Focal mechanism inversion and 3D deformation field acquisition of Iran MW7.3 earthquake in 2017[J]. Geomatics and Information Science of Wuhan University,45(2):196–204 (in Chinese).
    [12]
    Deng J S,Sykes L R. 1997. Evolution of the stress field in southern California and triggering of moderate-size earthquakes:A 200-year perspective[J]. J Geophys Res,102(B5):9859–9886. doi: 10.1029/96JB03897
    [13]
    European Space Agency. 2014. ASF data search vertex[DB/OL]. [2019-09-20]. https://search.asf.alaska.edu/#/.
    [14]
    Feng W P,Samsonov S,Almeida R,Yassaghi A,Li J H,Qiu Q,Li P,Zheng W J. 2018. Geodetic constraints of the 2017 MW7.3 Sarpol Zahab,Iran earthquake,and its implications on the structure and mechanics of the northwest Zagros thrust-fold belt[J]. Geophys Res Lett,45(14):6853–6861. doi: 10.1029/2018GL078577
    [15]
    Guo R M,Zheng Y,Xu J Q,Riaz M S. 2019. Transient viscosity and afterslip of the 2015 MW8.3 Illapel,Chile,earthquake[J]. Bull Seismol Soc Am,109(6):2567–2581. doi: 10.1785/0120190114
    [16]
    Hatzfeld D,Molnar P. 2010. Comparisons of the kinematics and deep structures of the Zagros and Himalaya and of the Iranian and Tibetan Plateaus and geodynamic implications[J]. Rev Geophys,48(2):RG2005.
    [17]
    He P,Wen Y M,Xu C J,Chen Y G. 2019. High-quality three-dimensional displacement fields from new-generation SAR imagery:Application to the 2017 Ezgeleh,Iran,earthquake[J]. J Geod,93(4):573–591. doi: 10.1007/s00190-018-1183-6
    [18]
    Hsu Y J,Simons M,Avouac J P,Galetzka J,Sieh K,Chlieh M,Natawidjaja D,Prawirodirdjo L,Bock Y. 2006. Frictional afterslip following the 2005 Nias-Simeulue earthquake,Sumatra[J]. Science,312(5782):1921–1926. doi: 10.1126/science.1126960
    [19]
    Jahani S,Callot J P,Letouzey J,Frizon de Lamotte D. 2009. The eastern termination of the Zagros fold-and-thrust belt,Iran:Structures,evolution,and relationships between salt plugs,folding,and faulting[J]. Tectonics,28(6):217–234.
    [20]
    Jónsson S,Segall P,Pedersen R,Björnsson G. 2003. Post-earthquake ground movements correlated to pore-pressure transients[J]. Nature,424(6945):179–183. doi: 10.1038/nature01776
    [21]
    King G C P,Stein R S,Lin J. 1994. Static stress changes and the triggering of earthquakes[J]. Bull Seismol Soc Am,84(3):935–953.
    [22]
    Lin J,Stein R S. 2004. Stress triggering in thrust and subduction earthquakes and stress interaction between the southern San Andreas and nearby thrust and strike-slip faults[J]. J Geophys Res,109(B2):B02303.
    [23]
    Lohman R B, Simons M. 2005. Some thoughts on the use of InSAR data to constrain models of surface deformation: Noise structure and data down sampling[J]. Geochem Geophys Geosyst, 6(1): Q01007.
    [24]
    Marone C J,Scholtz C H,Bilham R. 1991. On the mechanics of earthquake afterslip[J]. J Geophys Res,96(B5):8441–8452. doi: 10.1029/91JB00275
    [25]
    Mora O,Mallorqui J J,Broquetas A. 2003. Linear and nonlinear terrain deformation maps from a reduced set of interferometric SAR images[J]. IEEE Trans Geosci Remote Sens,41(10):2243–2253. doi: 10.1109/TGRS.2003.814657
    [26]
    Okada Y. 1985. Surface deformation due to shear and tensile faults in a half-space[J]. Bull Seismol Soc Am,75(4):1135–1154. doi: 10.1785/BSSA0750041135
    [27]
    Peltzer G,Rosen P,Rogez F,Hudnut K. 1998. Poroelastic rebound along the Landers 1992 earthquake surface rupture[J]. J Geophys Res:Solid Earth,103(B12):30131–30145. doi: 10.1029/98JB02302
    [28]
    Taymaz T, Nilfouroushan F, Yolsal-Çevikbilen S, Eken T. 2018. Co-seismic crustal deformation of the 12 November 2017 MW7.4 Sar-Pol-Zahab (Iran) earthquake: Integration of analysis based on DInSAR and seismological observations[C]//Proceedings of 2018 EGU General Assembly. Vienna, Austria: EGU2018-4186-6.
    [29]
    USGS. 2017. M7.3: 29 km S of Halabjah, Iraq[EB/OL]. [2020-07-15]. https://earthquake.usgs.gov/earthquakes/eventpage/us2000bmcg/moment-tensor.
    [30]
    USGS. 2018. M6.0: 32 km SW of Javanrud, Iran[EB/OL]. [2020-07-15]. https://earthquake.usgs.gov/earthquakes/eventpage/us1000ghda/moment-tensor.
    [31]
    Yang C S,Han B Q,Zhao C Y,Du J T,Zhang D X,Zhu S N. 2019. Co- and post-seismic deformation mechanisms of the MW7.3 Iran earthquake (2017) revealed by Sentinel-1 InSAR observations[J]. Remote Sens,11(4):418. doi: 10.3390/rs11040418
    [32]
    Yang Y H,Chen Q,Xu Q,Liu G X,Hu J C. 2018a. Source model and Coulomb stress change of the 2015 MW7.8 Gorkha earthquake determined from improved inversion of geodetic surface deformation observations[J]. J Geod,93(3):333–351.
    [33]
    Yang Y H,Hu J C,Yassaghi A,Tsai M C,Zare M,Chen Q,Wang Z G,Rajabi A M,Kamranzad F. 2018b. Midcrustal thrusting and vertical deformation partitioning constraint by 2017 MW7.3 Sarpol Zahab earthquake in Zagros mountain belt,Iran[J]. Seismol Res Lett,89(6):2204–2213. doi: 10.1785/0220180022
    [34]
    Zhao B,Bürgmann R,Wang D,Tan K,Du R,Zhang R. 2017. Dominant controls of downdip afterslip and viscous relaxation on the postseismic displacements following the MW7.9 Gorkha,Nepal,earthquake[J]. J Geophys Res:Solid Earth,122(10):8376–8401. doi: 10.1002/2017JB014366
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(9)  / Tables(2)

    Article Metrics

    Article views (343) PDF downloads(97) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return