Articles | Volume 22, issue 5
https://doi.org/10.5194/nhess-22-1665-2022
https://doi.org/10.5194/nhess-22-1665-2022
Research article
 | 
18 May 2022
Research article |  | 18 May 2022

Tsunami hazard in Lombok and Bali, Indonesia, due to the Flores back-arc thrust

Raquel P. Felix, Judith A. Hubbard, Kyle E. Bradley, Karen H. Lythgoe, Linlin Li, and Adam D. Switzer

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Cited articles

Afif, H. and Cipta, A.: Tsunami hazard map in eastern Bali, AIP Conf. Proc., 1658, 050001, https://doi.org/10.1063/1.4915041, 2015. 
Ammon, C. J., Kanamori, H., and Lay, T.: A great earthquake doublet and seismic stress transfer cycle in the central Kuril islands, Nature, 451, 561–565, https://doi.org/10.1038/nature06521, 2008. 
Beckers, J. and Lay, T.: Very broadband seismic analysis of the 1992 Flores, Indonesia, earthquake (Mw=7.9), J. Geophys. Res., 100, 18179–18193, https://doi.org/10.1029/95jb01689, 1995. 
Bilek, S. L.: Invited review paper: Seismicity along the South American subduction zone: Review of large earthquakes, tsunamis, and subduction zone complexity, Tectonophysics, 495, 2–14, https://doi.org/10.1016/j.tecto.2009.02.037, 2010. 
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Short summary
The Flores Thrust lies along the north coasts of Bali and Lombok. We model how an earthquake on this fault could trigger a tsunami that would impact the regional capital cities of Mataram and Denpasar. We show that for 3–5 m of slip on the fault (a Mw 7.5–7.9+ earthquake), the cities would experience a wave ca. 1.6–2.7 and ca. 0.6–1.4 m high, arriving in < 9 and ca. 23–27 min, respectively. They would also experience subsidence of 20–40 cm, resulting in long-term exposure to coastal hazards.
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