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Journal of Applied Remote Sensing

Evaluation of satellite remote sensing for operational monitoring of sediment plumes produced by dredging at Hay Point, Queensland, Australia
Author(s): Anisul Islam; L. Wang; C. Smith; R. Reddy; A. Lewis; A. Smith
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Paper Abstract

This study describes the potential of multi-temporal Landsat Thematic Mapper (TM), Enhanced Thematic Mapper Plus (ETM+) and Moderate Resolution Imaging Spectroradiometer (MODIS) data for the operational monitoring of sediment plume produced by dredging between 8 May and 31 October 2006 at Hay Point, Northern Queensland, Australia. The methodology involved atmospheric correction of the TM, ETM+ and MODIS images, the development and verification of a Total Suspended Sediment (TSS) model, and the evaluation of the image derived TSS maps for tracking sediment plume movements and its influence on the fringing coral environment. TSS empirical models are developed from TM/ETM+ Band 3 with R2 = 0.92 and from MODIS Band 12 with R2 = 0.61. The accuracy of the TSS model for TM/ETM+ is {plus minus} 3.2 (mg l-1) and for MODIS is {plus minus} 16.0 (mg l-1). The estimated sediment plume displacement and rate of dispersion show high correlation with the tidal amplitude. Wind speed greater than 6 m s-1 increases the sediment plume movements during the ebb tide. The frequency of the plume extending beyond the fringing coral islands during dredging operations is in agreement with the field observed coral mortality due to sediment accumulation.

Paper Details

Date Published: 1 December 2007
PDF: 15 pages
J. Appl. Rem. Sens. 1(1) 011506 doi: 10.1117/1.2834768
Published in: Journal of Applied Remote Sensing Volume 1, Issue 1
Show Author Affiliations
Anisul Islam, Geoscience Australia (Australia)
L. Wang, Geoscience Australia (Australia)
C. Smith, Geoscience Australia (Australia)
R. Reddy, Geoscience Australia (Australia)
A. Lewis, Geoscience Australia (Australia)
A. Smith, Great Barrier Reef Marine Park Authority (Australia)

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