nieuwe zoekopdracht
[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina

Late Holocene canyon-carving floods in northern Iceland were smaller than previously reported
van der Bilt, W.G.M.; Barr, I.D.; Berben, S.M.P.; Hennekam, R.; Lane, T.; Adamson, K.; Bakke, J. (2021). Late Holocene canyon-carving floods in northern Iceland were smaller than previously reported. Commun. Earth Environ. 2: 86.

Bijhorende data:
In: Communications Earth & Environment. Springer Nature: London. e-ISSN 2662-4435, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Auteurs  Top 
  • van der Bilt, W.G.M.
  • Barr, I.D.
  • Berben, S.M.P.
  • Hennekam, R., meer
  • Lane, T.
  • Adamson, K.
  • Bakke, J.

    Catastrophic floods have formed deep bedrock canyons on Earth, but the relationship between peak discharge and bedrock erosion is not clearly understood. This hinders efforts to use geological evidence of these cataclysmic events to constrain their magnitude – a prerequisite for impact assessments. Here, we combine proxy evidence from slackwater sediments with topographic models and hydraulic simulations to constrain the Late Holocene flood history of the Jökulsá á Fjöllum river in northern Iceland. We date floods to 3.5, 1.5 and 1.35 thousand years ago and confirm that flow peaks during these events were at most a third of previous estimates. Nevertheless, exposure ages suggests that nearby knickpoints retreated by more than 2 km during these floods. These findings support a growing consensus that the extent of bedrock erosion is not necessarily controlled by discharge and that canyon-carving floods may be smaller than typically assumed.

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ, voor meer informatie contacteer .