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

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

doi:https://doi.org/10.5194/nhess-22-1665-2022

Articles | Volume 22, issue 5

https://doi.org/10.5194/nhess-22-1665-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Tsunamis: from source processes to coastal hazard and...

https://doi.org/10.5194/nhess-22-1665-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 5

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

Supplement

https://doi.org/10.5194/nhess-22-1665-2022-supplement

Data sets

The animation of the tsunami propagation for the 5 m coseismic slip Raquel P. Felix, Judith A. Hubbard, Kyle E. Bradley, Karen H. Lythgoe, Linlin Li and Adam D. Switzer https://doi.org/10.21979/N9/DZLM5D

The inundation model for Mataram, Lombok Raquel P. Felix, Judith A. Hubbard, Kyle E. Bradley, Karen H. Lythgoe, Linlin Li and Adam D. Switzer https://doi.org/10.21979/N9/QKNSKO

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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 M_w 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.