Journal of Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회논문집)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
권호 표지
DOI QR코드

DOI QR Code

The Effect of Fault Failure with Time Difference on the Runup Height of East Coast of Korea

시간차를 지닌 단층파괴 활동이 동해안 처오름 높이에 미치는 영향

  • Jung, Taehwa (Department of Civil and Environmental Engineering, Hanbat National University) ;
  • Son, Sangyoung (School of Civil, Environmental, and Architectural Engineering, Korea University)
  • 정태화 (한밭대학교 건설환경공학과) ;
  • 손상영 (고려대학교 건축사회환경공학부)
  • Received : 2020.07.23
  • Accepted : 2020.08.14
  • Published : 2020.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

The fault failure process with time difference affects the initial generation of waveforms of tsunamis, which consequently changes the runup height on the coast. To examine the effect of time difference in fault failure process on the runup height, a numerical simulation was conducted assuming a number of virtual subsea earthquakes in the west coast of Japan. Results revealed that maximum runup heights along the east coast of Korea were minimal when the subfaults were aligned parallel with the shoreline. Meanwhile, if they were located perpendicular to the shoreline, the superposition effect of the initial surface by each subfault was noticeable, resulting in an increase in maximum runup height on the coast.

시간차를 지닌 단층파괴 활동은 지진해일의 초기파형 생성에 영향을 끼치며, 이로 인해 해안에서의 처오름 높이에도 변화를 준다. 이러한 단층파괴 활동이 처오름 높이에 미치는 영향을 검토하기 위하여 일본 서해역에 다수의 가상 단층파괴를 가정하여 수치모의를 수행하였다. 소단층들이 해안선에 평행하게 위치한 경우에는 시간차를 지닌 단층파괴가 처오름 높이에 미치는 영향은 미미했으나, 해안선에 수직으로 위치해 있는 경우에는 초기파형의 중첩효과가 두드러지게 발생하여 해안선에서 처오름 높이가 증가하였다.

Keywords

References

  1. Ammon, C.J., Ji, C., Thio, H.-K., Robinson, D., Ni, S., Hjorleifsdottir, V., Kanamori, H., Lay, T., Das, S., Helmberger, D., Ichinose, G., Polet, J. and Wald, D. (2005). Rupture process of the 2004 Sumatra-Andaman earthquake. Science, 308, 1133-1139. https://doi.org/10.1126/science.1112260
  2. Dutykh, D. and Dias, F. (2007). Water waves generated by a moving bottom. Tsunami and Nonlinear Waves (ed. A. Kundu). Geo Sciences, New York, Springer, 63-94.
  3. Dutykh, D., Dias, F. and Kervella, Y. (2006). Linear theory of wave generation by a moving bottom. Comptes Rendus de l'Academie des Sciences Paris, Series I, 343, 499-504.
  4. Dutykh, D., Mitsotakis, D., Gardeil, X. and Dias, F. (2013). On the use of the finite fault solution for tsunami generation problem. Theoretical and Computational Fluid Dynamics, 27(1-2), 177-199. https://doi.org/10.1007/s00162-011-0252-8
  5. Fujii, Y. and Satake, K. (2007). Tsunami source of the 2004 Sumatra-Andaman earthquake inferred from tide gauge and satellite data. Bulletin of the Seismological Society of America, 97(1A), S192-S207. https://doi.org/10.1785/0120050613
  6. Grilli, S., Ioualalen, M., Asavanant, J., Shi, F., Kirby, J. and Watts, P. (2007). Source constraints and model simulation of the December 26, 2004, Indian Ocean tsunami. Journal of Waterway Port Coastal and Ocean Engineering, 133(6), 414-428. https://doi.org/10.1061/(ASCE)0733-950X(2007)133:6(414)
  7. Hammack, J.L. (1973). A note on tsunamis: their generation and propagation in an ocean of uniform depth. Journal of Fluid Mechanics, 60(4), 769-799. https://doi.org/10.1017/S0022112073000479
  8. Imai, K., Satake, K. and Furumura, T. (2010). Amplification of tsunami heights by delayed rupture of great earthquakes along the Nankai trough. Earth, Planets and Space, 62(4), 427-432. https://doi.org/10.5047/eps.2009.12.005
  9. Ishii, M., Shearer, P.M., Houston, H. and Vidale, J.E. (2005). Extent, duration and speed of the 2004 Sumatra-Andaman earthquake imaged by the Hi-Net array. Nature, 435(7044), 933. https://doi.org/10.1038/nature03675
  10. Jung, T.-H. and Son, S. (2018). Propagation of tsunamis generated by seabed motion with time-history and spatial distribution: an analytical approach. Journal of Korean Society of Coastal and Ocean Engineers, 30(6), 263-269 (in Korean). https://doi.org/10.9765/KSCOE.2018.30.6.263
  11. Jung, T.-H. and Son, S. (2020). The Effect of Surface Ruptures on the Propagation of Tsunamis: An Analysis of 1993 Hokkaido Earthquake. Journal of the Korean Society of Hazard Mitigation, 20(1), 365-371 (in Korean). https://doi.org/10.9798/KOSHAM.2020.20.1.365
  12. Kervella, Y., Dutykh, D. and Dias, F. (2007). Comparison between three-dimensional linear and nonlinear tsunami generation models. Theoretical and Computational Fluid Dynamics, 21, 245-269. https://doi.org/10.1007/s00162-007-0047-0
  13. Maercklin, N., Festa, G., Colombelli, S. and Zollo, A. (2012). Twin ruptures grew to build up the giant 2011 Tohoku, Japan, earthquake. Scientific Reports, 2, 709. https://doi.org/10.1038/srep00709
  14. Le Gal, M., Violeau, D., Ata, R. and Wang, X. (2018). Shallow water numerical models for the 1947 gisborne and 2011 Tohoku-Oki tsunamis with kinematic seismic generation. Coastal Engineering, 139, 1-15. https://doi.org/10.1016/j.coastaleng.2018.04.022
  15. Le Gal, M., Violeau, D. and Benoit, M. (2017). Influence of timescales on the generation of seismic tsunamis. European Journal of Mechanics B/Fluids, 65, 257-273. https://doi.org/10.1016/j.euromechflu.2017.03.008
  16. Ohmachi, T., Tsukiyama, H. and Matsumoto, H. (2001). Simulation of Tsunami induced by dynamic displacement of seabed due to seismic faulting. Bulletin of the Seismological Society of America, 91(6), 1898-1909. https://doi.org/10.1785/0120000074
  17. 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
  18. Rhie, J., Dreger, D., Burgmann, R. and Romanowicz, B. (2007). Slip of the 2004 Sumatra-Andaman earthquake from joint inversion of long-period global seismic waveforms and GPS static offsets. Bulletin of the Seismological Society of America, 97(1A), S115-S127. https://doi.org/10.1785/0120050620
  19. Satake, K., Fujii, Y., Harada, T. and Namegaya, Y. (2013). Time and space distribution of coseismic slip of the 2011 Tohoku earthquake as inferred from tsunami waveform data. Bulletin of the Seismological Society of America, 103(2B), 1473-1492. https://doi.org/10.1785/0120120122
  20. Suppasri, A., Imamura, F. and Koshimura, S. (2010). Effects of the rupture velocity of fault motion, ocean current and initial sea level on the transoceanic propagation of tsunami. Coastal Engineering Journal, 52(2), 107-132. https://doi.org/10.1142/S0578563410002142
  21. Wang, X. (2009). User manual for COMCOT version 1.7 (first draft). Cornel University, 65.
  22. Wang, X. and Power, W.L. (2011). COMCOT: a tsunami generation propagation and run-up model. GNS Science report.