Journal
CATENA
Volume 130, Issue -, Pages 69-81Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catena.2014.12.004
Keywords
Rhine; Palaeoflood; End-member modelling; Flood deposits; Grain-size distribution; Abandoned channel
Funding
- Deltares BGS
- TNO
- Utrecht University
Ask authors/readers for more resources
Objective: The objective of this research was to unlock the potential of fluvial archives to create flood chronologies, based on grain-size characteristics,of flood deposits located in two recently formed fluvio-lacustrine sequences. Methods: Grain-size data was compared with contemporaneous discharge measurements (for the Lower Rhine, The Netherlands). Regression relations between coarse-tail,grain-size parameters and measured discharge were established for the last similar to 240 years, and applied to the older parts of both cores - resulting in peak discharge estimates back to AD similar to 1550. Results: Grain-size descriptive parameters such as the 95th percentile and end-member modelling outcomes correlate well with discharge and turn out to be sensitive proxies for inferring flood magnitudes. Locally, geomorphological changes influence the relation between peak discharge magnitudes and flood bed coarseness, but these can be assessed, using continuous flood layer and background sedimentation measurements to standardize grain-size descriptive parameters. Conclusion/implications: Flood records distilled from sedimentary archives hold great potential for extending existing records of observed discharge and aid establishment of design discharge for flood protection measures and assessment of non-stationarity of the flooding regime due to climatic and anthropogenic forcing. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available