Controls on earthflow formation in the Teanaway  River basin, central Washington State, USA

Schanz, Sarah A.; Colee, A. Peyton

doi:https://doi.org/10.5194/esurf-10-761-2022

Articles | Volume 10, issue 4

https://doi.org/10.5194/esurf-10-761-2022

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

https://doi.org/10.5194/esurf-10-761-2022

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

Articles | Volume 10, issue 4

Research article

|

29 Jul 2022

Research article |

| 29 Jul 2022

Controls on earthflow formation in the Teanaway River basin, central Washington State, USA

Sarah A. Schanz and A. Peyton Colee

Supplement

https://doi.org/10.5194/esurf-10-761-2022-supplement

Data sets

Landslide location, surface roughness, and age for the Teanaway basin, USA Sarah Schanz and A. Peyton Colee https://doi.org/10.5281/zenodo.5885660

Model code and software

schanzs/JungleCk_diffusion: Jungle Creek diffusion (v1.0) Sarah Schanz https://doi.org/10.5281/zenodo.6871538

Short summary

We mapped and dated 187 earthflows to determine controls on earthflow formation and resulting topographic changes in the Teanaway basin, central Washington State, USA. Using a new relative dating technique and absolute dating, we find that 25 % of earthflows were active in the last ~500 years. Earthflows are lithologically controlled, actively narrow valleys, and increase sediment loads.