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Correction published on 26 March 2014, see Remote Sens. 2014, 6(4), 2743-2744.

Open AccessArticle
Remote Sens. 2013, 5(1), 1-18;

Evolution of Coral Rubble Deposits on a Reef Platform as Detected by Remote Sensing

Geocoastal Research Group, School of Geosciences, University of Sydney, Sydney, NSW 2006, Australia
Author to whom correspondence should be addressed.
Received: 10 October 2012 / Revised: 18 December 2012 / Accepted: 18 December 2012 / Published: 21 December 2012
Full-Text   |   PDF [1476 KB, uploaded 19 June 2014]


An investigation into the evolution of coral rubble deposits on a coral reef platform is assessed using high-resolution remote sensing data and geospatial analysis. Digital change detection analysis techniques are applied to One Tree Reef in the southern Great Barrier Reef by analysing aerial photographs and satellite images captured between 1964 and 2009. Two main types of rubble deposits were identified: (1) rubble flats that are featureless mass accumulations of coral rubble; and, (2) rubble spits that are shore-normal linear features. While both deposits prograde in a lagoon-ward direction, rubble spits move faster (~2 m/yr) than rubble flats (~0.5 m/yr). The volume of rubble, the underlying substrate, the energy regime, and storm frequency control the rate of progradation. Rubble flat occurrence is restricted to the high-energy (windward) margin of the coral reef platform, while rubble spits are distributed reef wide, both in modal high energy and modal low energy regions of the reef. Rubble spit deposition is considered to be a result of enlarged spur and groove morphology of the forereef, whereby wave energy is focused through the enlarged groove formations causing the preferential deposition of coral rubble in particular zones of the adjacent reef flat. One last control is thought to be the elevation of the reef crest whereby lower areas are more prone to rubble flat development. A vertical and ocean-ward accumulation of rubble is occurring on the windward margin of the reef leading to a build-up and build-out of the reef, governing the expansion of the reef footprint. This study shows for the first time the evolution of a coral reef rubble flat and rubble spits over decadal time scales as detected through remotely sensed images spanning 45 years. View Full-Text
Keywords: coral reefs; change detection; rubble flats; rubble spits; shingle rampart; lagoon infilling processes coral reefs; change detection; rubble flats; rubble spits; shingle rampart; lagoon infilling processes
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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    Correction (PDF, 218 KB)

    A correction was published on 26 Feburary 2014


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Shannon, A.M.; Power, H.E.; Webster, J.M.; Vila-Concejo, A. Evolution of Coral Rubble Deposits on a Reef Platform as Detected by Remote Sensing. Remote Sens. 2013, 5, 1-18.

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