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Mapping of Subaqueous Landforms for Near-Shore Landslide Susceptibility Assessment Along Norwegian Fjords

  • Louise HansenEmail author
  • Jean-Sebastien L’Heureux
  • Oddvar Longva
  • Raymond S. Eilertsen
  • Reidulv Bøe
Chapter

Abstract

Landslides in unconsolidated sediments along the shoreline of Norwegian fjords are recurrent phenomena and can have large consequences. With high-resolution bathymetric mapping it is possible to get a quick overview over regional patterns of subaqueous, near- shore conditions. Test programs at the Geological Survey of Norway have mapped submarine near shore areas along selected Norwegian fjords. Subaqueous features were identified and classified to obtain a comprehensive overview over near-shore processes and deposits. The focus was identification of mass-wasting processes and features of relevance for the stability of fjord sediments. The mapping shows that traces of, for example, mass-wasting processes are more widespread than previously known. The maps can be combined with terrestrial data and used for near-shore landslide susceptibility assessment and hazard mapping, but are also considered as relevant for other purposes.

Keywords

Landslides Mapping Susceptibility Fjord Shoreline Subaqueous landforms 

Notes

Acknowledgements

A recent project on method development for mapping of areas susceptible to shoreline landslides was financed by the Norwegian Water Resources and Energy Directorate (NVE).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Louise Hansen
    • 1
    Email author
  • Jean-Sebastien L’Heureux
    • 1
  • Oddvar Longva
    • 1
  • Raymond S. Eilertsen
    • 2
  • Reidulv Bøe
    • 1
  1. 1.Geological Survey of Norway (NGU)TrondheimNorway
  2. 2.Geological Survey of Norway (NGU)TromsøNorway

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