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Sediment Failure Affecting Muddy Contourites on the Continental Slope Offshore Northern Norway: Lessons Learned and Some Outstanding Issues

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Submarine Mass Movements and their Consequences

Abstract

The formerly glaciated continental margin off Norway has experienced a relatively large number of submarine landslides of varying sizes, volumes, and ages originating from contourites deposited on the continental slope. We review: (i) the origin and occurrence of weak layers involved, (ii) sediment disintegration and initial flow, and (iii) sediment run-out and resulting deposits. The following major knowledge gaps, critical for further progress in this field are identified: information on lithology and sediment properties of material recovered from below the depth of conventional coring, and in situ measurements of sediment physical properties at the depth of weak layers.

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Acknowledgement

This is a contribution to the LOSLOPE project funded by the Research Council of Norway . We acknowledge the skills, guidance and inspiration from Profs. T.O. Vorren and M. Ivanov, both contributed to the initiation of this work, but sadly passed away before the project came to conclusion. We are grateful for constructive reviews from C. Berndt and B.O. Hjelstuen.

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Correspondence to Jan Sverre Laberg .

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Laberg, J.S., Baeten, N.J., Vanneste, M., Forsberg, C.F., Forwick, M., Haflidason, H. (2016). Sediment Failure Affecting Muddy Contourites on the Continental Slope Offshore Northern Norway: Lessons Learned and Some Outstanding Issues. In: Lamarche, G., et al. Submarine Mass Movements and their Consequences. Advances in Natural and Technological Hazards Research, vol 41. Springer, Cham. https://doi.org/10.1007/978-3-319-20979-1_28

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