Understanding and predicting wave erosion of marsh edges


Journal Article

Margin lateral erosion is arguably the main mechanism leading to marsh loss in estuaries and lagoons worldwide. Our understanding of the mechanisms controlling marsh edge erosion is currently quite limited and current predictive models rely on empirical laws with limited general applicability. We propose here a simple theoretical treatment of the problem based on dimensional analysis. The identification of the variables controlling the problem and the application of Buckingham's theorem show, purely on dimensional grounds, that the rate of edge erosion and the incident wave power density are linearly related. The predictive ability of the derived relationship is then evaluated, positively, using new long-term observations from the Venice lagoon (Italy) and by re-interpreting data available in previous literature. Copyright 2011 by the American Geophysical Union.

Full Text

Duke Authors

Cited Authors

  • Marani, M; D'Alpaos, A; Lanzoni, S; Santalucia, M

Published Date

  • November 1, 2011

Published In

Volume / Issue

  • 38 / 21

International Standard Serial Number (ISSN)

  • 0094-8276

Digital Object Identifier (DOI)

  • 10.1029/2011GL048995

Citation Source

  • Scopus