Observations of coastal sediment erosion using in-line holography

Hongyue Sun, R. Perkins, John Watson, Michael Antony Player, D. M. Paterson

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper demonstrates how in-line particle field holography may be used to study erosion processes in coastal sediments, in particular to visualize the morphologies of eroded sediment particles and to investigate how organic matter affects the floc size and erosion threshold in incipient sediment erosion. In-line holography produces 3D images and provides higher resolution over larger recording volume compared with other imaging techniques.
The study examines the dependence of the observed shearing stress, particle size distributions and morphologies of particles on the duration of desiccation of the sediment bed, and on the concentration of extra-cellular polymeric substance. Both artificial sediment (produced from cleaned sediments by the addition of natural extra-cellular polymeric substance) and intact sediment were used. The required hydrodynamic shear stress to produce erosion on the sediment beds was generated using a cohesive strength meter (CSM). Characterization of the eroded particle properties was carried out using 2D image analysis.

Original languageEnglish
Article numberPII S1464-4285(04)75656-1
Pages (from-to)703-710
Number of pages8
JournalJournal of Optics A: Pure and Applied Optics
Volume6
Issue number7
DOIs
Publication statusPublished - Jul 2004

Keywords

  • in-line holography
  • sediment erosion process
  • image processing
  • hydrodynamic shearing stress
  • intertidal sediments
  • shear stress
  • plankton
  • hologrammetry
  • particles

Cite this

Observations of coastal sediment erosion using in-line holography. / Sun, Hongyue; Perkins, R.; Watson, John; Player, Michael Antony; Paterson, D. M.

In: Journal of Optics A: Pure and Applied Optics, Vol. 6, No. 7, PII S1464-4285(04)75656-1 , 07.2004, p. 703-710.

Research output: Contribution to journalArticle

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