Nearshore tsunami amplitudes across the Maldives archipelago due to worst-case seismic scenarios in the Indian Ocean

Rasheed, Shuaib; Warder, Simon C.; Plancherel, Yves; Piggott, Matthew D.

doi:https://doi.org/10.5194/nhess-24-737-2024

Articles | Volume 24, issue 3

https://doi.org/10.5194/nhess-24-737-2024

© Author(s) 2024. 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-24-737-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 3

Research article

|

05 Mar 2024

Research article |

| 05 Mar 2024

Nearshore tsunami amplitudes across the Maldives archipelago due to worst-case seismic scenarios in the Indian Ocean

Shuaib Rasheed, Simon C. Warder, Yves Plancherel, and Matthew D. Piggott

Data sets

Atoll Tsunami Amplitudes Explorer Earth Engine Apps https://zubba1989.users.earthengine.app/view/tsunamimv

Model code and software

Thetis coastal ocean model: discontinuous Galerkin discretization for the three-dimensional hydrostatic equations (https://thetisproject.org/download.html) T. Kärnä et al. https://doi.org/10.5194/gmd-11-4359-2018

Optimising tidal range power plant operation (https://github.com/thetisproject/thetis) A. Angeloudis et al. https://doi.org/10.1016/j.apenergy.2017.12.052

Short summary

Here we use a high-resolution bathymetry dataset of the Maldives archipelago, as well as corresponding high numerical model resolution, to carry out a scenario-based tsunami hazard assessment for the entire Maldives archipelago to investigate the potential impact of plausible far-field tsunamis across the Indian Ocean at the island scale. The results indicate that several factors contribute to mitigating and amplifying tsunami waves at the island scale.