Dynamic analysis of flowlike landslides at Brienz/Brinzauls, Graubünden, Switzerland

Aaron, Jordan; de Palézieux, Larissa; Langham, Jake; Gischig, Valentin; Thoeny, Reto; Figi, Daniel

doi:10.5194/nhess-26-449-2026

Articles | Volume 26, issue 1

https://doi.org/10.5194/nhess-26-449-2026

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

https://doi.org/10.5194/nhess-26-449-2026

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

Articles | Volume 26, issue 1

Research article

|

23 Jan 2026

Research article |

| 23 Jan 2026

Dynamic analysis of flowlike landslides at Brienz/Brinzauls, Graubünden, Switzerland

Jordan Aaron, Larissa de Palézieux, Jake Langham, Valentin Gischig, Reto Thoeny, and Daniel Figi

Data sets

Data For: Dynamic Analysis of Flowlike Landslides at Brienz/Brinzauls, Graubünden, Switzerland Jordan Aaron et al. https://doi.org/10.3929/ethz-c-000788974

Short summary

In mid-May, 2023, the village of Brienz/Brinzauls in the Swiss canton of Graubunden was evacuated, and one month later a flowlike landslide emplaced with velocities of ~25 m/s and narrowly missed impacting the village. Landslides at this site have emplaced with velocities that can vary by 5 order-of-magnitude, a puzzling observation which we analyse in the present work. Our results show that the range of scenarios usually considered in landslide risk analyses must be expanded.