Coupled simulation of landslide, tsunami, and ground displacement for the 2017 Nuugaatsiaq event in Greenland

Aochi, Hideo; Yamada, Masumi; Ho, Tung-Cheng; Le Cozannet, Gonéri; Hammann, Arno Christian; Mottram, Ruth

doi:10.5194/nhess-26-3291-2026

Articles | Volume 26, issue 7

https://doi.org/10.5194/nhess-26-3291-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-26-3291-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 7

Research article

|

17 Jul 2026

Research article |

| 17 Jul 2026

Coupled simulation of landslide, tsunami, and ground displacement for the 2017 Nuugaatsiaq event in Greenland

Hideo Aochi, Masumi Yamada, Tung-Cheng Ho, Gonéri Le Cozannet, Arno Christian Hammann, and Ruth Mottram

Supplement

https://doi.org/10.5194/nhess-26-3291-2026-supplement

Model code and software

Finite difference method code in C for 3D seismic wave propagation by Aochi and Madariaga (2003) (Version v1) Hideo Aochi https://doi.org/10.5281/zenodo.10225172

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Short summary

The 2017 Landslide-made tsunami in Greenland occurred in a context of global warming and heavily impacted local communities. We analyze this event using seismic data to reconstruct the whole chain of processes from the landslide to the tsunami. Our results validate a new approach to analyze crustal deformations caused by tsunami propagation in fjords, suggesting that alert systems based on seismic data are feasible, potentially allowing to reduce tsunami risks in polar regions.