Co-seismic slip of the 18 April 2021 Mw 5.9 Genaveh earthquake in the South Dezful Embayment of Zagros (Iran) and its aftershock sequence
DOI:
https://doi.org/10.26443/seismica.v2i1.246Keywords:
The 18 April 2021 Mw 5.9 Genaveh earthquake, slip distribution, Zagros, InSAR, Gulkhari anticline, Dezful embayment, moment tensor inversion, relocationAbstract
On 2021 April 18, an Mw 5.9 earthquake struck the Genaveh region in the south Dezful embayment of the Zagros, Iran. Here, we investigate the active tectonics of the region, the geometry and slip distribution of the causative fault plane, and its aftershock behavior. We applied a combination of different geodetic and seismological methods (slip distribution inversion of the mainshock using Sentinel-1 Interferometric Synthetic Aperture Radar (InSAR), relocation, and moment tensor inversion of aftershocks and background seismicity of the region). Co-seismic InSAR modeling shows that the slip is confined to the sedimentary cover at depths of 4-7 km with a maximum slip of 1 m and highlights the influence of lithology in the rupture propagation. Moment tensors and centroid depths of aftershocks down to Mw 4 show that the distributed aftershocks sequence is dominated by reverse faulting at centroid depths of 4-10 km. The causative fault is compatible and parallel to the trend of the Gulkhari anticline and the coseismic uplift of the Genaveh earthquake implies that the growth of this particular fold is linked to the fault(s). However, still, due to the absence of surface rupture, the clear relationship between buried faulting and surface folding remains unclear.
References
Abdullahie Fard, I., Sepehr, M., & Sherkati, S. (2011). Neogene salt in SW Iran and its interaction with Zagros folding. Geological Magazine, 148(5–6), 854-867,. https://doi.org/10.1017/S0016756811000343
Alavi, M. (2008). Structures of the Zagros Fold-Thrust Belt in Iran. American Journal of Science, 308(1), 104–104. https://doi.org/10.2475/01.2008.05
Allen, M. B., & Talebian, M. (2011). Structural variation along the Zagros and the nature of the Dezful Embayment. Geological Magazine, 148, 911-924,. https://doi.org/10.1017/S0016756811000318
Ambraseys, N. N., & Melville, C. P. (1982). A history of Persian earthquakes. Cambridge University Press.
Berberian, M. (1995). Master “blind” thrust faults hidden under the Zagros folds: Active basement tectonics and surface morphotectonics. Tectonophysics, 241(3), 193-224,. https://doi.org/10.1016/0040-1951(94)00185-C
Bergman, E. A., Benz, H. M., Yeck, W. L., Karasözen, E., Engdahl, E. R., Ghods, A., Hayes, G. P., & Earle, P. S. (2022). A Global Catalog of Calibrated Earthquake Locations. Seismological Research Letters. https://doi.org/10.1785/0220220217
Büyükakpınar, P., Cesca, S., Hainzl, S., Jamalreyhani, M., Heimann, S., & Dahm, T. (2021). Reservoir-Triggered Earthquakes Around the Atatürk Dam (Southeastern Turkey. Frontiers in Earth Sciences, 9. https://doi.org/10.3389/feart.2021.663385
Carruba, S., Perotti, C. R., Buonaguro, R., Calabrò, R., Carpi, R., & Naini, M. (2006). Structural pattern of the Zagros fold-and-thrust belt in the Dezful Embayment (SW Iran. In S. Mazzoli & R. W. H. Butler (Eds.), Styles of Continental Contraction: Geological Society of America Special Paper 414 (pp. 11-32,). https://doi.org/10.1130/2006.2414(02)
Cesca, S., Stich, D., Grigoli, F., Vuan, A., López-Comino, J. Á., Niemz, P., Blanch, E., Dahm, T., & Ellsworth, W. L. (2021). Seismicity at the Castor gas reservoir driven by pore pressure diffusion and asperities loading. Nature Communications, 12, 4783,. https://doi.org/10.1038/s41467-021-24949-1
Collettini, C., Barchi, M. R., Paola, N., Trippetta, F., & Tinti, E. (2022). Rock and fault rheology explain differences between on fault and distributed seismicity. Nature Communications, 13, 5627,. https://doi.org/10.1038/s41467-022-33373-y
Copley, A., Karasozen, E., Oveisi, B., Elliott, J. R., Samsonov, S., & Nissen, E. (2015). Seismogenic faulting of the sedimentary sequence and laterally variable material properties in the Zagros Mountains (Iran) revealed by the August 2014 Murmuri (E. Dehloran) earthquake sequence. Dehloran) Earthquake Sequence. Geophysical Journal International, 203, 1436-1459,. https://doi.org/10.1093/gji/ggv365
Dahm, T., Cesca, S., Hainzl, S., Braun, T., & Krüger, F. (2015). Discrimination between induced, triggered, and natural earthquakes close to hydrocarbon reservoirs: A probabilistic approach based on the modeling of depletion-induced stress changes and seismological source parameters. Journal of Geophysical Research: Solid Earth, 120, 2491-2509,. https://doi.org/10.1002/2014JB011778
Das, S., & Henry, C. (2003). Spatial relation between main earthquake slip and its aftershock distribution. Reviews of Geophysics, 41. https://doi.org/10.1029/2002RG000119 data, C. S., & ASF DAAC, R. (2022).
Donner, S., Igel, H., & Hadziioannou, C. (2018). Retrieval of the Seismic Moment Tensor from Joint Measurements of Translational and Rotational Ground Motions: Sparse Networks and Single Stations. In S. D’Amico (Ed.), Moment Tensor Solutions: A Useful Tool for Seismotectonics (pp. 263-280,). Springer Natural Hazards. Springer International Publishing. https://doi.org/https://doi.org/10.1007/978-3-319-77359-9{_}12
Elliott, J. R., Bergman, E. A., Copley, A. C., Ghods, A. R., Nissen, E. K., Oveisi, B., Tatar, M., Walters, R. J., & Yamini‐Fard, F. (2015). The 2013 Mw 6.2 Khaki-Shonbe (Iran) Earthquake: Insights into seismic and aseismic shortening of the Zagros sedimentary cover. Earth and Space Science, 2, 435-471,. https://doi.org/10.1002/2015EA000098
Farahzadi, E., Alavi, S. A., Sherkati, S., & Ghassemi, M. R. (2019). Variation of subsidence in the Dezful Embayment, SW Iran: influence of reactivated basement structures. Arabian Journal of Geosciences, 12, 616,. https://doi.org/10.1007/s12517-019-4758-5
Funning, G. J., Parsons, B., Wright, T. J., Jackson, J. A., & Fielding, E. J. (2005). Surface displacements and source parameters of the 2003 Bam (Iran) earthquake from Envisat advanced synthetic aperture radar imagery. Journal of Geophysical Research: Solid Earth, 110(B9). https://doi.org/10.1029/2004JB003338
Golshadi, Z., Famiglietti, N. A., Atzori, S., & Vicari, A. (2022). Surface Displacement and Source Parameters of the 2021 Bandar-e Genaveh, Iran, Earthquake Determined from InSAR Observations. Applied Sciences, 12, 4223,. https://doi.org/10.3390/app12094223
Heidbach, O., Rajabi, M., Cui, X., Fuchs, K., Müller, B., Reinecker, J., Reiter, K., Tingay, M., Wenzel, F., Xie, F., Ziegler, M. O., Zoback, M.-L., & Zoback, M. (2018). The World Stress Map database release 2016: Crustal stress pattern across scales. Tectonophysics, 744, 484-498,. https://doi.org/10.1016/j.tecto.2018.07.007
Heimann, S., Isken, M., Kühn, D., Sudhaus, H., Steinberg, A., Daout, S., Cesca, S., Vasyura-Bathke, H., & Dahm, T. (2018). Grond - A probabilistic earthquake source inversion framework. https://doi.org/10.5880/GFZ.2.1.2018.003
Heimann, S., Kriegerowski, M., Isken, M., Cesca, S., Daout, S., Grigoli, F., Juretzek, C., Megies, T., Nooshiri, N., Steinberg, A., Sudhaus, H., Vasyura-Bathke, H., Willey, T., & Dahm, T. (2017). Pyrocko - An open-source seismology toolbox and library. https://doi.org/10.5880/GFZ.2.1.2017.001
Heimann, S., Vasyura-Bathke, H., Sudhaus, H., Isken, M. P., Kriegerowski, M., Steinberg, A., & Dahm, T. (2019). A Python framework for efficient use of pre-computed Green’s functions in seismological and other physical forward and inverse source problems. Solid Earth, 10, 1921-1935,. https://doi.org/10.5194/se-10-1921-2019
Irandoust, M. A., Priestley, K., & Sobouti, F. (2022). High-Resolution Lithospheric Structure of the Zagros Collision Zone and Iranian Plateau. Journal of Geophysical Research: Solid Earth, 127. https://doi.org/10.1029/2022JB025009
Jafari, M., Aflaki, M., Mousavi, Z., Walpersdorf, A., & Motaghi, K. (2023). Coseismic and postseismic characteristics of the 2021 Ganaveh earthquake along the Zagros foredeep fault based on InSAR data. Geophysical Journal International. https://doi.org/10.1093/gji/ggad127 Jahani, S., Callot, J. P., Letouzey, J., & Lamotte, D. (2009). The eastern termination of the Zagros Fold-and-Thrust Belt, Iran: Structures, evolution, and relationships between salt plugs, folding, and faulting. Tectonics, 28(6). https://doi.org/10.1029/2008TC002418
Jahani, S., Hassanpour, J., Mohammadi-Firouz, S., Letouzey, J., Lamotte, D., Alavi, S. A., & Soleimany, B. (2017). Salt tectonics and tear faulting in the central part of the Zagros Fold-Thrust Belt, Iran. Marine and Petroleum Geology, 86, 426-446,. https://doi.org/10.1016/j.marpetgeo.2017.06.003
Jamalreyhani, M., Rezapour, M., Cesca, S., Heimann, S., Vasyura-Bathke, H., Sudhaus, H., Isken, M., and Dahm, T. The 2017 November 12 Mw 7.3 Sarpol-Zahab (Iran-Iraq border region) earthquake: source model, aftershock sequence and earthquakes triggering. EGU2020 Copernicus Meetings, EGU2020-759, 2019. doi:10.5194/egusphere-egu2020-759
Jamalreyhani, M., Pousse-Beltran, L., Büyükakpınar, P., Cesca, S., Nissen, E., Ghods, A., López-Comino, J. Á., Rezapour, M., & Najafi, M. (2021). The 2019–2020 Khalili (Iran) Earthquake Sequence—Anthropogenic Seismicity in the Zagros Simply Folded Belt? Journal of Geophysical Research: Solid Earth, 126. https://doi.org/10.1029/2021JB022797
Jamalreyhani, M., Rezapour, M., & Büyükakpınar, P. (2021). Evaluation of seismic sensor orientations in the full moment tensor inversion results. https://doi.org/10.5194/egusphere-egu21-459
Jamalreyhani, M., Rezapour, M., Cesca, S., Dahm, T., Heimann, S., Sudhaus, H., & Isken, M. P. (2022). Insight into the 2017-2019 Lurestan arc seismic sequence (Zagros, Iran); complex earthquake interaction in the basement and sediments. Geophysical Journal International. https://doi.org/10.1093/gji/ggac057
Jamalreyhani, M., Rezapour, M., Cesca, S., Heimann, S., Vasyura-Bathke, H., Sudhaus, H., Isken, M. P., & Dahm, T. (2019). The 2017 November 12 Mw 7.3 Sarpol-Zahab (Iran-Iraq border region) earthquake: source model, aftershock sequence and earthquakes triggering. EGU2020 Copernicus Meetings, EGU2020-759. https://doi.org/10.5194/egusphere-egu2020-759
Karasözen, E., Nissen, E., Bergman, E. A., & Ghods, A. (2019). Seismotectonics of the Zagros (Iran) From Orogen-Wide, Calibrated Earthquake Relocations. Journal of Geophysical Research: Solid Earth, 124, 9109-9129,. https://doi.org/10.1029/2019JB017336
McQuarrie, N. (2004). Crustal scale geometry of the Zagros fold–thrust belt. Iran, Journal of Structural Geology, 26, 519–535. https://doi.org/10.1016/j.jsg.2003.08.009
Motagh, M., Bahroudi, A., Haghighi, M. H., Samsonov, S., Fielding, E., & Wetzel, H. (2015). The 18 August 2014 Mw 6.2 Mormori, Iran, Earthquake: A Thin‐Skinned Faulting in the Zagros Mountain Inferred from InSAR Measurements. Seismological Research Letters, 86(3), 775–782. https://doi.org/10.1785/0220140222
Mouthereau, F., Lacombe, O., & Vergés, J. (2012). Building the Zagros collisional orogen: Timing, strain distribution and the dynamics of Arabia/Eurasia plate convergence. Tectonophysics, 532–535, 27-60,. https://doi.org/10.1016/j.tecto.2012.01.022
Mouthereau, F., Tensi, J., Bellahsen, N., Lacombe, O., De Boisgrollier, T., & Kargar, S. (2007). Tertiary sequence of deformation in a thin-skinned/thick-skinned collision belt: The Zagros Folded Belt (Fars, Iran). Tectonics, 26(5). https://doi.org/https://doi.org/10.1029/2007TC002098
Najafi, M., & Lajmorak, S. (2020). Contractional salt-tectonic system in the south Dezful embayment, Zagros. Journal of Structural Geology, 141, 104204,. https://doi.org/10.1016/j.jsg.2020.104204
Najafi, M., Yassaghi, A., Bahroudi, A., Vergés, J., & Sherkati, S. (2014). Impact of the Late Triassic Dashtak intermediate detachment horizon on anticline geometry in the Central Frontal Fars, SE Zagros fold belt, Iran. Marine and Petroleum Geology, 54, 23-36,. https://doi.org/10.1016/j.marpetgeo.2014.02.010
Nissen, E., Ghods, A., Karasözen, E., Elliott, J. R., Barnhart, W. D., Bergman, E. A., Hayes, G. P., Jamal‐Reyhani, M., Nemati, M., Tan, F., Abdulnaby, W., Benz, H. M., Shahvar, M. P., Talebian, M., & Chen, L. (2019). The 12 November 2017 Mw 7.3 Ezgeleh-Sarpolzahab (Iran. Earthquake and Active Tectonics of the Lurestan Arc. Journal of Geophysical Research: Solid Earth, 124, 2124-2152,. https://doi.org/10.1029/2018JB016221
Nissen, E., Tatar, M., Jackson, J. A., & Allen, M. B. (2011). New views on earthquake faulting in the Zagros fold-and-thrust belt of Iran. Geophysical Journal International, 186(3), 928-944,. https://doi.org/10.1111/j.1365-246X.2011.05119.x
Nissen, E., Yamini-Fard, F., Tatar, M., Gholamzadeh, A., Bergman, E., Elliott, J. R., Jackson, J. A., & Parsons, B. (2010). The vertical separation of mainshock rupture and microseismicity at Qeshm island in the Zagros fold-and-thrust belt, Iran. Earth and Planetary Science Letters, 296(3), 181–194. https://doi.org/https://doi.org/10.1016/j.epsl.2010.04.049
Nissen, Edwin, Ghorashi, M., Jackson, J., Parsons, B., & Talebian, M. (2007). The 2005 Qeshm Island earthquake (Iran)—a link between buried reverse faulting and surface folding in the Zagros Simply Folded Belt? Geophysical Journal International, 171(1), 326–338. https://doi.org/10.1111/j.1365-246X.2007.03514.x
Okada, Y. (1985). Surface deformation due to shear and tensile faults in a half-space. Bulletin of the Seismological Society of America, 75(4), 1135-1154,. https://doi.org/10.1785/BSSA0750041135 poletersolide. (2023). GDM-SAR online service.
Pousse‐Beltran, L., Nissen, E., Bergman, E. A., Cambaz, M. D., Gaudreau, É., Karasözen, E., & Tan, F. (2020). The 2020 M w 6.8 Elazığ (Turkey) earthquake reveals rupture behavior of the East Anatolian Fault. Geophysical Research Letters, 47(13). https://doi.org/10.1029/2020GL088136
Roustaei, M., Nissen, E., Abbassi, M., Gholamzadeh, A., Ghorashi, M., Tatar, M., Yamini-Fard, F., Bergman, E., Jackson, J., & Parsons, B. (2010). The 2006 March 25 Fin earthquakes (Iran)—insights into the vertical extents of faulting in the Zagros Simply Folded Belt. Geophysical Journal International, 181, 1275-1291,. https://doi.org/10.1111/j.1365-246X.2010.04601.x
Sepehr, M., & Cosgrove, J. W. (2004). Structural framework of the Zagros Fold–Thrust Belt, Iran. Marine and Petroleum Geology, 21(7), 829–843. https://doi.org/https://doi.org/10.1016/j.marpetgeo.2003.07.006
Seraj, M., Faghih, A., Motamedi, H., & Soleimany, B. (2020). Major Tectonic Lineaments Influencing the Oilfields of the Zagros Fold-Thrust Belt, SW Iran: Insights from Integration of Surface and Subsurface Data. Journal of Earth Science, 31, 596-610,. https://doi.org/10.1007/s12583-020-1303-0
Shamszadeh, A., Sarkarinejad, K., Ferrer, O., Mukherjee, S., & Seraj, M. (2022a). Effect of inherited structural highs on the structure and kinematics of the South Dezful Embayment, SW Iran. Geological Magazine, 1-23,. https://doi.org/10.1017/S0016756822000541
Shamszadeh, A., Sarkarinejad, K., Ferrer, O., Mukherjee, S., & Seraj, M. (2022b). Interaction of inherited structures and contractional deformation in the South Dezful Embayment: Insights from the Gachsaran oilfield, SW Iran. Marine and Petroleum Geology, 145, 105871,. https://doi.org/10.1016/j.marpetgeo.2022.105871
Sherkati, S., & Letouzey, J. (2004). Variation of structural style and basin evolution in the central Zagros (Izeh zone and Dezful Embayment. Iran. Marine and Petroleum Geology, 21, 535-554,. https://doi.org/10.1016/j.marpetgeo.2004.01.007
Sherkati, S., Letouzey, J., & Frizon de Lamotte, D. (2006). Central Zagros fold-thrust belt (Iran): New insights from seismic data, field observation, and sandbox modeling. Tectonics, 25(4). https://doi.org/https://doi.org/10.1029/2004TC001766
Sherkati, S., Molinaro, M., Lamotte, D., & Letouzey, J. (2005). Detachment folding in the Central and Eastern Zagros fold-belt (Iran): salt mobility, multiple detachments and late basement control. Journal of Structural Geology, 27, 1680-1696,. https://doi.org/10.1016/j.jsg.2005.05.010
Stöcklin, J. (1968). Structural History and Tectonics of Iran1: A Review. AAPG Bulletin, 52, 1229-1258,. https://doi.org/10.1306/5D25C4A5-16C1-11D7-8645000102C1865D
Talebian, M., & Jackson, J. (2004). A reappraisal of earthquake focal mechanisms and active shortening in the Zagros mountains of Iran. Geophysical Journal International, 156(3), 506-526,. https://doi.org/10.1111/j.1365-246X.2004.02092.x
Tourani, M., Isik, V., Saber, R., & Caglayan, A. (2021). Radar Interferometric Assessment of April 18, 2021 Bandar Ganaveh Earthquake (mw: 5.8. In Southern Iran. Presented at the 11th Congress of the Balkan Geophysical Society, European Association of Geoscientists and Engineers (pp. 1-5,). https://doi.org/10.3997/2214-4609.202149BGS89
Vergés, J., Saura, E., Casciello, E., Fernàndez, M., Villaseñor, A., Jiménez-Munt, I., & García-Castellanos, D. (2011). Crustal-scale cross-sections across the NW Zagros belt: implications for the Arabian margin reconstruction. Geological Magazine, 148, 739-761,. https://doi.org/10.1017/S0016756811000331
Walker, R. T., Bergman, E. A., Szeliga, W., & Fielding, E. J. (2011). Insights into the 1968-1997 Dasht-e-Bayaz and Zirkuh earthquake sequences, eastern Iran, from calibrated relocations, InSAR and high-resolution satellite imagery. Geophysical Journal International, 187, 1577-1603,. https://doi.org/10.1111/j.1365-246X.2011.05213.x
Wang, R., Gu, Y. J., Schultz, R., & Chen, Y. (2018). Faults and Non-Double-Couple Components for Induced Earthquakes. Geophysical Research Letters, 45, 8966-8975,. https://doi.org/10.1029/2018GL079027
Wang, S., Nissen, E., Pousse-Beltran, L., Craig, T. J., Jiao, R., & Bergman, E. A. (2022). Structural controls on coseismic rupture revealed by the 2020 Mw 6.0 Jiashi earthquake (Kepingtag belt, SW Tian Shan, China. Geophysical Journal International. https://doi.org/10.1093/gji/ggac159
Wright, T. J., Lu, Z., & Wicks, C. (2003). Source model for the M w 6.7, 23 October 2002, Nenana Mountain Earthquake (Alaska) from InSAR. Geophysical Research Letters, 30(18). https://doi.org/10.1029/2003GL018014
Wright, T. J., Parsons, B. E., Jackson, J. A., Haynes, M., Fielding, E. J., England, P. C., & Clarke, P. J. (1999). Source parameters of the 1 October 1995 Dinar (Turkey) earthquake from SAR interferometry and seismic bodywave modelling. Earth and Planetary Science Letters, 172, 23-37,. https://doi.org/10.1016/S0012-821X(99)00186-7
Yaghoubi, A., Mahbaz, S., Dusseault, M. B., & Leonenko, Y. (2021). Seismicity and the State of Stress in the Dezful Embayment, Zagros Fold and Thrust Belt. Geosciences, 11(6). https://doi.org/10.3390/geosciences11060254
Zahradnik, J., Jansky, J., & Plicka, V. (2008). Detailed Waveform Inversion for Moment Tensors of M~4 Events: Examples from the Corinth Gulf, Greece. Bulletin of the Seismological Society of America, 98, 2756-2771,. https://doi.org/10.1785/0120080124
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Copyright (c) 2023 Mohammadreza Jamalreyhani, Léa Pousse-Beltran, MirAli Hassanzadeh, Samineh Sadat Arabi, Eric A. Bergman, Aref Shamszadeh, Shiva Arvin, Niusha Fariborzi, Ali Songhori
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