Exploring inferred geomorphological sediment thickness as  a new site proxy to predict ground-shaking amplification at  regional scale: application to Europe and eastern Türkiye

Loviknes, Karina; Cotton, Fabrice; Weatherill, Graeme

doi:https://doi.org/10.5194/nhess-24-1223-2024

Articles | Volume 24, issue 4

https://doi.org/10.5194/nhess-24-1223-2024

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

Special issue:

Harmonized seismic hazard and risk assessment for Europe

https://doi.org/10.5194/nhess-24-1223-2024

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

Articles | Volume 24, issue 4

Research article

|

05 Apr 2024

Research article |

| 05 Apr 2024

Exploring inferred geomorphological sediment thickness as a new site proxy to predict ground-shaking amplification at regional scale: application to Europe and eastern Türkiye

Karina Loviknes, Fabrice Cotton, and Graeme Weatherill

Data sets

Topographic slope as a proxy for seismic site-conditions (VS30) and amplification around the globe Trevor I. Allen and David J. Wald https://doi.org/10.3133/ofr20071357

European Site Response Model Datasets Viewer (v1.0) G. A. Weatherill et al. https://doi.org/10.7414/EUC-EUROPEAN-SITE-MODEL-DATA-VIEWER

Global 1-km Gridded Thickness of Soil, Regolith, and Sedimentary Deposit Layers J. D. Pelletier et al. https://doi.org/10.3334/ORNLDAAC/1304

Model code and software

Mapping site proxies and proxy-based site amplification predictions (Version 02) Karina Loviknes et al. https://doi.org/10.5281/zenodo.10686867

Short summary

Earthquake ground shaking can be strongly affected by local geology and is often amplified by soft sediments. In this study, we introduce a global geomorphological model for sediment thickness as a protentional parameter for predicting this site amplification. The results show that including geology and geomorphology in site-amplification predictions adds important value and that global or regional models for sediment thickness from fields beyond engineering seismology are worth considering.