Study of the rupture processes of the 1989 (Mw 6.9) and 2021 (Mw 7.0) Guerrero earthquakes using teleseismic records: Sismotectonic implications
Keywords:Interplate earthquake. Slip models. Rupture zone. Cocos plate.
Slip models of the April 25, 1989 (Mw 6.9) earthquake and the Acapulco earthquake of September 8, 2021 (Mw 7.0) were determined to analyze its rupture zone and understand the relationship of interplate earthquakes in the Acapulco–San Marcos subduction zone. For both events, velocity P and SH waves recorded at teleseismic distances were modeled. For the 1989 San Marcos event, two slip zones were determined with a maximum slip of 121cm, a stress drop of 8bars and a rupture duration of approximately 13s. This event showed a complex rupture. For the 2021 Acapulco event, a zone of maximum slip of 267cm, a stress drop of 5bars, and a rupture duration of approximately 24s were determined. Analysis of rupture zones suggests that complex events occur in the Acapulco–San Marcos subduction zone. Therefore, these results have important implications in seismic potential studies since the source parameters are critical.
Allmann, B.P., Shearer P.M., 2009. Global variations of stress drop for moderate to large earthquake, Journal of Geophysical Research, 114, b01310. Anderson, J. G., Singh S. K., Espíndola J. M., y Yamamoto J., 1989. Seismic strain release in the Mexican subduction thrust, Phys. Earth Planet Interiors, 58, 307-332. Astiz, L., Kanamori, H., 1984. An earthquake doublet in Ometepec, Guerrero, Mexico. Physics Earth Planetary Interiors 34, 24-45. Courboulex, F., Singh S. K., Pacheco J. F. y Ammon C. J., 1997. The 1995 Colima-Jalisco, Mexico, earthquake (Mw 8): A study of the rupture process, Geophysical Research Lett., 24, 1019-1022. DeMets, C., Wilson D.S., 1997. Relative motions of the Pacific, Rivera, North American, and Cocos plate since 0.78 Ma. Journal Geophysics Research., 102, B2, 2789-2806. Engdahl, E.R., Hilst V., Buland R.D., 1998. Global teleseismic earthquake relocation with improved travel times and procedures for depth determination, Bulletin Seismological Society of America, 88, 722-743. Hartzell S. H., T. Heaton, 1983. Inversion of strong motion and telesismic waveform data for the fault rupture history of the 1979 Imperial Valley, California, earthquake, Bulletin Seismological Society America, 73, 6A, 1553-1583. Hartzell, S. H. y. Heaton T. H., 1986. Rupture history of the 1984 Morgan Hill, California, earthquake from the inversion of strong motion records, Bulletin of the Seismological Society of America, 76, 649-674. Hartzell, S., Mendoza C., y Zeng, 2013. Rupture model of the 2011 Mineral, Virginia, earthquake from teleseismic and regional waveforms, Geophysical Research Letters, 10, 1-6. Huang H., Rui Yan, Dapeng L., Song X., Jian L., Feng G., Huang J., Zeren Z., Xuhui Sh., 2021. The variations of plasma density recorded by CSES-1 satellite possibly related to Mexico Ms 7.1 earthquake on 8th September 2021, Natural Hazards Research, ISSN 2666-5921, https://doi.org/10.1016/j.nhres.2021.12.002. (https://www.sciencedirect.com/science/article/pii/S266659212100055X) Gonzalez-Huizar, H., Pérez-Campos, X., Velasco, A.A., 2021. Acapulco earthquake struck the edge of a seismic gap, Temblor, http://doi.org/10.32858/temblor.218 González-Ruiz J.R., McNally K.C., 1988. Stress accumulation and release since 1882 in Ometepec, Guerrero, Mexico: Implications for failure mechanisms and risk assessments of a seismic gap, Journal of Geophysical Research: Solid Earth, 93, B6, 6297-6317. Kelleher, J., Sykes, L., Oliver, J., 1973. Possible Criteria for Predicting Earthquake Locations and their Application to Major Plate Boundaries of the Pacific and the Caribbean, Journal Geophysical Research, 78, B14, 2547-2585. Melgar D., Ruiz-Angulo A., Crowell B. W., Jameson Fielding E., Solano-Hernandez E.A., 2022. The Mechanisms of Tsunami Amplification and the Earthquake Source of the 2021 M7 Acapulco, Mexico, Earthquake, Earth ArXiv, 1-17, Mendoza, C., Hartzell S., 1988. Afterschock Patterns and main shock faulting, Bull. Seism. Soc. Am., 78, 4, 1438-1449. Mendoza, C., 1993. Coseismic slip to two large Mexican earthquakes from teleseismic body waveforms Implications for asperity interaction in the Michoacán plate boundary segment, Journal Geophysical Research., 98, B5, 8197-8210. Mendoza, C., 1995. Finite-fault analysis of the 1979 March 14 Petatlan, Mexico, earthquake using telesismic P waveforms, Geophysical Journal International, 121, 3, 675-683. Mendoza, C., Hartzell S., 1999. Fault-slip distribution of the 1995 Colima-Jalisco, Mexico, earthquake, Bulletin of the Seismological Society of America, 89, 5, 1338-1344. Mendoza C., Martinez-Lopez M. R, 2017. The Mw 7.3 Papanoa, Mexico earthquake of April 18, 2014: Implications for recurrent Mw > 7 thrust earthquakes in western Guerrero, Geofisica Internacional, 56:1, 13-26. Mendoza, C., Martínez‐López, M. R., 2021. Rupture models of recent Mw>7 thrust earthquakes in the Guerrero–Oaxaca region of the Mexico subduction zone using teleseismic body waves. Seismological Research Letters, 92 (6): 3565–3576. doi: https://doi.org/10.1785/0220200423. Mendoza, C., Martinez-Lopez, M.R., 2022. Rapid finite-fault analysis of large Mexico earthquakes using teleseismic P waves. Journal of Seismology, online, https://doi.org/10.1007/s10950_022_1083_y Merino-Coronado, Salyano J., Rosales E., J. J., Martinez M., 1962. Los temblores de Acapulco de 1962. Anal. Instituto. Geofisica, UNAM., 8, 23-36. Murotani, S., Satake R., Fujii, 2013. Scaling relations of seismic moment, rupture area, average slip, and asperity size for M~9 subduction-zone earthquakes, Geophysics Research Letters., 40, 19, 5070-5074. Nishenko S.P., Singh S.K., 1987. The Acapulco-Ometepec, Mexico, earthquakes of 1907-1982: Evidence for a variable recurrence history. Bulletin of the Seismological Society America, 77 (1987), 1359-1367 Ortiz O., Singh S.K., Kostoglodov V., Pacheco J., 2000. Sources areas of the Acapulco-San Marcos, Mexico earthquakes of 1962 (M 7.1;7.0) and 1957 (M 7.7), as constrained by tsunami and uplift records, Geofísica Internacional, 39, 4, 337-348. Pacheco J. F., Sykes L. R., Scholz Ch H., 1993. Nature of seismic coupling along simple plate boundaries of the subduction type. Journal of Geophysical Research, 98, B8, 14,133-14,159. Pardo, M., Suárez, G., 1995. Shape of the subducted Rivera and Cocos plates in southern Mexico: Seismic and tectonic implications. Journal of Geophysical Research, 100(B7), 12357-12373. Perez-Campos, X., Kin Y., Husker A., Davis, P.M., Clayton R. W., Iglesias, A., Pacheco, J.F., Singh S.K., Manea V.C., Gurnis M., 2008. Horizontal subduction and truncation of the Cocos plate beneath central Mexico, Geophysical Research Letters, 35, 18, l18303. Perez-Oregon, J.; Varotsos, P.K.; Skordas, E.S.; Sarlis, N.V., 2021. Estimating the Epicenter of a future strong earthquake in southern California, Mexico, and Central America by means of natural Time analysis and earthquake nowcasting. Entropy, 23, 1658. https:// doi.org/10.3390/e23121658 Santoyo, G. G. M. A., 1994. Estudio del proceso de ruptura del sismo del 25 de septiembre de 1989 usando registros de movimientos fuertes y telesismicos, tesis, Universidad Nacional Autonoma de Mexico, 1-69 Santoyo, M. A., Singh S. K., Mikumo T., y Ordaz M., 2005, Space-time Clustering of Large Thrust Earthquake along the Mexican Subduction Zone: An Evidence of Source Stress Interaction, Bulletin of the Seismological Society of America, 95, 5, 1856-1869. Simons M., Minson S. E., Sladen A., Ortega F., Jiang, Owen J. S. E., Meng L., Ampuero J., Wei Sh., Chu R., Helmberger D. V., Kanamori H., Hetland E., Moore A. W., Webb F. H., 2011, The 2011 Magnitude 9.0 Tohoku-Oki Earthquake: Mosaicking the Megathrust from seconds to centuries, Science 332, 1421. Singh S.K., Espindola J.M., Yamamoto J., Havskov J., 1982. Seismic potential of Acapulco-San Marcos region along the Mexican subduction zone, Geophysical Research Letters, 9, 6, 633-636. Singh S.K., Mortera F., 1991. Source time funtions of large Mexican Subduction Earthquakes, Morphology of the Benioff Zone, age of the plate, and Their Tectonic Implications, Journal of Geophysical Research, 96, B13, 21,487-21,502. Singh, S.K., Ordaz, M., 1994. Seismic release in Mexican subduction zone earthquakes, Bulletin of the Seismological Society of America, 84, 5, 1533-1550. Stolte C., McNally K.C., González-Ruiz J., Simila G.W., Reyes A., Rebollar C., Munguia L., Mendoza L., 1986. Fine structure of a post-failure wadati-Benioff zone, Geophysical Research Letters, 13, 577-580. Somerville, P. K. Irikra, R, Graves, S. Sawada, D. Wald N. Abrahamson, Y. Iwasaki, T. Kagawa, N. Smith y A. Kowada A., 1999. Characterizing crustal earthquake slip models for the prediction of strong ground motion, Seismological Research Letters, 70, 59-80. Suárez, G., Monfret, T., Wittlinger, G., David, C., 1990. Geometry of subduction and depth of the seismogenic zone in the Guerrero Gap, México. Nature, 345, 336-338. UNAM Seismology Group, 2015. Papanoa, Mexico earthquake of 18 April 2014 (M W 7.3), Geofisica Internacional, 54-4, 363-386. Wessel, P., Smith, W.H.F., 1991. Free software helps map and display data, EOS Transactions: American Geophysical Union, 72, 441. Zuñiga, F.R., Gutiérrez C., Nava, E. Lermo J., Rodriguez M., Coyoli R. 1993. Aftershocks of the San Marcos Earthquake of April 25, 1989 (Ms=6.9) and Some implications for the Acapulco-San Marcos, Mexico, Seismic Potential, PAGEOPH, 140, 2.
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