REN Zhiyuan, YUAN Ye, WANG Peitao, FAN Tingting, WANG Juncheng, HOU Jingming. The September 16, 2015 Mw 8.3 Illapel, Chile Earthquake: characteristics of tsunami wave from near-field to far-field[J]. Acta Oceanologica Sinica, 2017, 36(5): 73-82. doi: 10.1007/s13131-017-1005-3
Citation: REN Zhiyuan, YUAN Ye, WANG Peitao, FAN Tingting, WANG Juncheng, HOU Jingming. The September 16, 2015 Mw 8.3 Illapel, Chile Earthquake: characteristics of tsunami wave from near-field to far-field[J]. Acta Oceanologica Sinica, 2017, 36(5): 73-82. doi: 10.1007/s13131-017-1005-3

The September 16, 2015 Mw 8.3 Illapel, Chile Earthquake: characteristics of tsunami wave from near-field to far-field

doi: 10.1007/s13131-017-1005-3
  • Received Date: 2016-03-06
  • On September 16, 2015, an earthquake with magnitude of Mw 8.3 occurred 46 km offshore from Illapel, Chile, generating a 4.4-m local tsunami measured at Coquimbo. In this study, the characteristics of tsunami are presented by a combination of analysis of observations and numerical simulation based on sources of USGS and NOAA. The records of 16 DART buoys in deep water, ten tidal gauges along coasts of near-field, and ten coastal gauges in the far-field are studied by applying Fourier analyses. The numerical simulation based on nonlinear shallow water equations and nested grids is carried out to provide overall tsunami propagation scenarios, and the results match well with the observations in deep water and but not well in coasts closed to the epicenter. Due to the short distance to the epicenter and the shelf resonance of southern Peru and Chile, the maximum amplitude ranged from 0.1 m to 2 m, except for Coquimbo. In deep water, the maximum amplitude of buoys decayed from 9.8 cm to 0.8 cm, suggesting a centimeter-scale Pacific-wide tsunami, while the governing period was 13-17 min and 32 min. Whereas in the far-field coastal region, the tsunami wave amplified to be around 0.2 m to 0.8 m, mostly as a result of run-up effect and resonance from coast reflection. Although the tsunami was relatively moderate in deep water, it still produced non-negligible tsunami hazards in local region and the coasts of far-field.
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  • An Chao, Sepúlveda I, Liu P L F. 2014. Tsunami source and its validation of the 2014 Iquique, Chile, earthquake. Geophysical Research Letters, 41(11):3988-3994
    Aránguiz R, González G, González J, et al. 2016. The 16 September 2015 Chile Tsunami from the post-tsunami survey and numerical modeling perspectives. Pure and Applied Geophysics, 173(2):333-348
    Arcos M E M, LeVeque R J. 2015. Validating velocities in the GeoClaw tsunami model using observations near Hawaii from the 2011 Tohoku tsunami. Pure and Applied Geophysics, 172(3-4):849-867
    Catalán P A, Aránguiz R, González G, et al. 2015. The 1 April, 2014 Pisagua tsunami:observations and modeling. Geophysical Research Letters, 42(8):2918-2925
    Contreras-López M, Winckler P, Sepúlveda I, et al. 2016. Field survey of the 2015 Chile Tsunami with emphasis on coastal wetland and conservation areas. Pure and Applied Geophysics, 173(2):349-367
    DeMets C, Gordon R G, Argus D F. 2010. Geologically current plate motions. Geophysical Journal International, 181(1):1-80
    Heidarzadeh M, Satake K. 2013. Waveform and spectral analyses of the 2011 Japan tsunami records on tide gauge and DART stations across the Pacific Ocean. Pure and Applied Geophysics, 170(6-8):1275-1293
    Heidarzadeh M, Murotani S, Satake K, et al. 2016. Source model of the 16 September 2015 Illapel, Chile, Mw 8.4 earthquake based on teleseismic and tsunami data. Geophysical Research Letters, 43(2):643-650
    Heidarzadeh M, Satake K, Murotani S, et al. 2015. Deep-water characteristics of the trans-Pacific tsunami from the 1 April 2014 Mw 8.2 Iquique, Chile Earthquake. Pure and Applied Geophysics, 172(3-4):719-730
    Kendrick E, Bevis M, Smalley Jr R, et al. 2001. An integrated crustal velocity field for the central Andes. Geochemistry, Geophysics, Geosystems, 2(11):doi: 10.1029/2001GC000191
    LeVeque R J, George D L, Berger M J. 2011. Tsunami modelling with adaptively refined finite volume methods. Acta Numerica, 20:211-289
    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
    Okal E A. 2011. Tsunamigenic earthquakes:past and present milestones. Pure and Applied Geophysics, 168(6-7):969-995
    Rabinovich A B, Candella R N, Thomson R E. 2013. The open ocean energy decay of three recent trans-Pacific tsunamis. Geophysical Research Letters, 40(12):3157-3162
    Ren Zhiyuan, Liu Hua, Wang Benlong, et al. 2014. An investigation on multi-buoy inversion method for tsunami warning system in South China Sea. Journal of Earthquake and Tsunami, 8(3):1440004
    Ren Zhiyuan, Wang Benlong, Fan Tingting, et al. 2013. Numerical analysis of impacts of 2011 Japan Tohoku tsunami on China Coast. Journal of Hydrodynamics, Serise B, 25(4):580-590
    Ren Zhiyuan, Zhao Xi, Liu Hua. 2015. Dispersion effects on tsunami propagation in South China Sea. Journal of Earthquake and Tsunami, 9(5):1540001
    Tang Liujuan, Titov V V, Moore C, et al. 2016. Real-time assessment of the 16 September 2015 Chile Tsunami and implications for near-field forecast. Pure and Applied Geophysics, 173(2):369-387
    Watada S, Kusumoto S, Satake K. 2014. Traveltime delay and initial phase reversal of distant tsunamis coupled with the self-gravitating elastic Earth. Journal of Geophysical Research:Solid Earth, 119(5):4287-4310
    Ye Lingling, Lay T, Kanamori H, et al. 2016. Rapidly estimated seismic source parameters for the 16 September 2015 Illapel, Chile Mw 8.3 Earthquake. Pure and Applied Geophysics, 173(2):321-332
    Yu Fujiang, Yuan Ye, Zhao Lianda, et al. 2011. Evaluation of potential hazards from teletsunami in China:tidal observations of a teletsunami generated by the Chile 8.8 Mw earthquake. Chinese Science Bulletin, 56(11):1108-1116
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