Linking pattern to process in reef sediment dynamics at Lady Musgrave Island, southern Great Barrier Reef

Hamylton, Sarah M., Carvalho, Rafael C., Duce, Stephanie, Roelfsema, Chris M. and Vila-Concejo, Ana (2016) Linking pattern to process in reef sediment dynamics at Lady Musgrave Island, southern Great Barrier Reef. Sedimentology, 63 6: 1634-1650. doi:10.1111/sed.12278

Author Hamylton, Sarah M.
Carvalho, Rafael C.
Duce, Stephanie
Roelfsema, Chris M.
Vila-Concejo, Ana
Title Linking pattern to process in reef sediment dynamics at Lady Musgrave Island, southern Great Barrier Reef
Journal name Sedimentology   Check publisher's open access policy
ISSN 0037-0746
Publication date 2016-05-20
Sub-type Article (original research)
DOI 10.1111/sed.12278
Open Access Status Not Open Access
Volume 63
Issue 6
Start page 1634
End page 1650
Total pages 17
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell Publishing
Collection year 2017
Language eng
Abstract Linking surficial sediment patterns in reef environments to the processes that underlie their depositional dynamics enables predictions to be made of how environmental changes will influence reef-associated sedimentary landforms, such as islands and beaches. Geomorphic linkages between sediment deposition patterns and the biophysical processes that drive them are often poorly resolved, particularly at broad landscape scales where tangible statements can be made about structural changes to landforms. The present study applies geospatial techniques to link patterns in reef sediment dynamics at Lady Musgrave Island to the underlying processes driving them. In situ calcification is characterized by developing a high resolution map of the surficial calcium carbonate producing communities inhabiting the reef platform, and associated sediments across the reef flat are analysed for grain size, kurtosis, sorting and threshold bed shear stress to explore transport pathways across the reef flat and lagoon. Wave energy is modelled across the entire reef platform as a potential driver of sediment dynamics, and morphometric linkages are empirically defined between wave energy and grain size. Findings indicate that carbonate sediments are primarily sourced from calcifying communities colonizing the outer periphery of the reef platform and that sediment grain size can be reliably linked to wave energy by virtue of a linear model.
Keyword Carbonate sediments
Grain size
Great Barrier Reef
Lagoon infill
Reef Island
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Early view

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Geography, Planning and Environmental Management Publications
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Created: Fri, 26 Feb 2016, 14:32:03 EST by Mr Chris Roelfsema on behalf of School of Geography, Planning & Env Management