Earthquake-induced landslides in Norway

Sørensen, Mathilde B.; Haga, Torbjørn; Nesje, Atle

doi:https://doi.org/10.5194/nhess-23-1577-2023

Articles | Volume 23, issue 4

https://doi.org/10.5194/nhess-23-1577-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Earthquake-induced hazards: ground motion amplification and...

https://doi.org/10.5194/nhess-23-1577-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 4

Research article

|

27 Apr 2023

Research article |

| 27 Apr 2023

Earthquake-induced landslides in Norway

Mathilde B. Sørensen, Torbjørn Haga, and Atle Nesje

Data sets

NNSN earthquake catalog NNSN https://nnsn.geo.uib.no/nnsn/#/data/events/search

UIB-NORSAR EIDA node web interface NNSN https://eida.geo.uib.no/webdc3/

Scandinavian Earthquake Archive ICG https://www.geo.uib.no/seismo/REPORTS/Scandinavian_earthquake_archive/

SeKlima observations and weather statistics NCCS https://seklima.met.no/

Short summary

Most Norwegian landslides are triggered by rain or snowmelt, and earthquakes have not been considered a relevant trigger mechanism even though some cases have been reported. Here we systematically search historical documents and databases and find 22 landslides induced by eight large Norwegian earthquakes. The Norwegian earthquakes induce landslides at distances and over areas that are much larger than those found for global datasets.