Articles | Volume 22, issue 3
Nat. Hazards Earth Syst. Sci., 22, 891–907, 2022
https://doi.org/10.5194/nhess-22-891-2022
Nat. Hazards Earth Syst. Sci., 22, 891–907, 2022
https://doi.org/10.5194/nhess-22-891-2022
Research article
17 Mar 2022
Research article | 17 Mar 2022

Submarine landslide source modeling using the 3D slope stability analysis method for the 2018 Palu, Sulawesi, tsunami

Chatuphorn Somphong et al.

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Cited articles

Ahmed, A., Ugai, K., and Yang, Q. Q.: Assessment of 3D Slope Stability Analysis Methods Based on 3D Simplified Janbu and Hovland Methods, Int. J. Geomech., 12, 81–89, https://doi.org/10.1061/(asce)gm.1943-5622.0000117, 2012. 
Aida, I.: Reliability of a tsunami source model derived from fault parameters, J. Phys. Earth., 26, 57–73, 1978. 
Arikawa, T., Muhari, A., Okumura, Y., Dohi, Y., Afriyanto, B., Sujatmiko, K. A., and Imamura, F.: Coastal Subsidence Induced Several Tsunamis During the 2018 Sulawesi Earthquake, J. Disaster Res., 13, sc20181204, https://doi.org/10.20965/jdr.2018.sc20181204, 2018. 
Badan Geologi: DI BALIK PESONA PALU: Anomali Perilaku Gelombang Tsunami, Badan Geologi, Baundung Indonesia, 2018 (in Indonesian). 
LOESCHEN Badan Geologi: DI BALIK PESONA PALU: Anomali Perilaku Gelombang Tsunami, Badan Geologi, Baundung Indonesia, 2018 (in Indonesian). 
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Short summary
The majority of past research used hypothesized landslides to simulate tsunamis, but they were still unable to properly explain the observed data. In this study, submarine landslides were simulated by using a slope-failure-theory-based numerical model for the first time. The findings were verified with post-event field observational data. They indicated the potential presence of submarine landslide sources in the southern part of the bay and were consistent with the observational tsunamis.
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