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Automated estimation of seabed morphodynamic parameters
Terseleer, N.; Degrendele, K.; Kint, L.; Roche, M.; Van den Eynde, D.; Van Lancker, V.R.M. (2019). Automated estimation of seabed morphodynamic parameters, in: Lefebvre, A. et al. International conference MARID VI - Marine and River Dune Dynamics 2019, 1 - 3 April 2019, Bremen, Germany: book of abstracts. pp. 219-224
In: Lefebvre, A.; Garlan, T.; Winter, C. (Ed.) (2019). International conference MARID VI - Marine and River Dune Dynamics 2019, 1 - 3 April 2019, Bremen, Germany: book of abstracts. MARUM – Center for Marine Environmental Sciences, University of Bremen/SHOM: Bremen. ISBN 978-2-11-139488-9. 267 pp., meer

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Documenttype: Congresbijdrage

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Auteurs  Top 
  • Roche, M., meer
  • Van den Eynde, D., meer
  • Van Lancker, V.R.M., meer

Abstract
    An automatic procedure is described to estimate seabed morphodynamic parameters (main bedform wavelength, height, migration direction and magnitude) from repeated multibeam echosounder (MBES) bathymetric data. The method explores successive bathymetric profiles to assess seabed morphodynamics based on wavelet analysis and cross-correlation. It is applied on 143 successive MBES surveys from a monitoring program in 10 areas of marine aggregate extraction in the Belgian part of the North Sea, resulting in 355 observations of morphodynamic parameters. These can be used to explore specific patterns such as the decrease in dune height in areas experiencing more extraction. Altogether, this method appears efficient to quickly and automatically map seabed bedforms, investigate their temporal dynamics, and points towards interesting features for further analysis.

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