Modal sensitivity of rock glaciers to elastic changes from spectral seismic noise monitoring and modeling

Guillemot, Antoine; Baillet, Laurent; Garambois, Stéphane; Bodin, Xavier; Helmstetter, Agnès; Mayoraz, Raphaël; Larose, Eric

doi:https://doi.org/10.5194/tc-15-501-2021

Articles | Volume 15, issue 2

https://doi.org/10.5194/tc-15-501-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-15-501-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 2

Research article

|

02 Feb 2021

Research article |

| 02 Feb 2021

Modal sensitivity of rock glaciers to elastic changes from spectral seismic noise monitoring and modeling

Antoine Guillemot, Laurent Baillet, Stéphane Garambois, Xavier Bodin, Agnès Helmstetter, Raphaël Mayoraz, and Eric Larose

Data sets

France 2015, MT_CAMPAGNE French Landslide Observatory temporary experiments French RESIF seismological portal RESIF https://doi.org/10.15778/RESIF.1N2015

Short summary

Among mountainous permafrost landforms, rock glaciers are composed of boulders, fine frozen materials, water and ice in various proportions. Displacement rates of active rock glaciers can reach several m/yr, contributing to emerging risks linked to gravitational hazards. Thanks to passive seismic monitoring, resonance effects related to seasonal freeze–thawing processes of the shallower layers have been monitored and modeled. This method is an accurate tool for studying rock glaciers at depth.