In this study, the effect of delayed multi-fault rupture on maximum tsunami runup was investigated. Rupture of faults mostly occurs in a delayed pattern; however, conventional models assume that rupture of faults occurs simultaneously. We simulated the effect of delayed rupture of faults on the maximum tsunami runup on the east coast of Korea with reference to the 1993 Hokkaido earthquake. The Cornell Multi-grid Coupled Tsunami Model (COMCOT) was used to generate the maximum tsunami runup database on the east coast of Korea. The delay time between faults was examined with a 1-min interval up to 10 min. The maximum tsunami runup showed a tendency to increase significantly in a specific space and time interval. The middle part of the east coast of Korea (from Gangneung to Samcheok) showed a significant increase in the maximum tsunami runup. In particular, the maximum tsunami runup due to delayed rupture can be larger than that of simultaneous rupture of faults by up to a factor of 1.8. To quantitatively evaluate the effect of delayed rupture, we performed a data-driven analysis using Bayesian network with the database generated from numerical tsunami modeling. It was found that the maximum tsunami runup is amplified at a specific delay time (e.g., 4 min and 9 min) between rupture of faults and this is closely related to the superposition of tsunami component generated by each fault. Our results demonstrate that the effect of delayed rupture should be considered in the prediction of tsunami runup.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Probabilistic Assessment of Delayed Multi-fault Rupture Effect on Maximum Tsunami Runup along the East Coast of Korea


    Additional title:

    KSCE J Civ Eng


    Contributors:

    Published in:

    Publication date :

    2022-01-01


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Mechanisms Of Scour Induced By Tsunami Runup

    Yeh, Harry / Tonkin, Susan / Heller, Eric et al. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 2004

    Free access

    Maximum Periodic Wave Runup on Smooth Slopes

    Walton, Todd L. / Ahrens, John P. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1990

    Free access

    Wave Runup on Rough Slopes

    Stoa, Philip N. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1979

    Free access

    Prediction of Irregular Wave Runup

    Ahrens, John P. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1977

    Free access

    Extreme Runup Statistics on Natural Beaches

    Resio, Donald T. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1987

    Free access