Using an acoustic ground discrimination system to map coral reef benthic classes

White, W. H., Harborne, A. R., Sotheran, I. S., Walton, R. and Foster-Smith, R. L. (2003) Using an acoustic ground discrimination system to map coral reef benthic classes. International Journal of Remote Sensing, 24 13: 2641-2660. doi:10.1080/0143116031000066981

Author White, W. H.
Harborne, A. R.
Sotheran, I. S.
Walton, R.
Foster-Smith, R. L.
Title Using an acoustic ground discrimination system to map coral reef benthic classes
Journal name International Journal of Remote Sensing   Check publisher's open access policy
ISSN 0143-1161
Publication date 2003-07
Sub-type Article (original research)
DOI 10.1080/0143116031000066981
Volume 24
Issue 13
Start page 2641
End page 2660
Total pages 20
Place of publication Colchester, Essex, United Kingdom
Publisher Taylor & Francis
Language eng
Formatted abstract
An Acoustic Ground Discrimination System (AGDS) can extract information on the nature of the seabed. Compared to satellite or airborne sensors, AGDS is rarely used in tropical environments but is easy to operate and produces a modest amount of digital data. This study aimed to assess acoustic surveys of coral reef benthic classes using a RoxAnn ™ AGDS in the Philippines. Benthic classes were categorised into four levels of detail using hierarchical classification of field data. Using independent data, subsequent maps were shown to have overall accuracies of: 85% at coarse resolution (three classes), 61% and 54% at two intermediate levels (five and four classes) and 28% at fine resolution (10 classes). These accuracies are assumed to be conservative because of constraints during this study including semi-quantitative data for discriminating class types, benthic changes between AGDS and accuracy assessment surveys and lack of differential global positioning system (GPS). Despite these limitations, AGDS accuracy levels were comparable to those achieved by satellites and it has advantages including greater water penetration and independence from cloud cover. Acoustic data are, therefore, proposed as useful tools for tropical habitat mapping and complementary to satellite and airborne sensors.
Keyword Remote sensing
Benthic environment
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 27 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 31 times in Scopus Article | Citations
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Created: Fri, 04 May 2012, 16:41:46 EST by Alastair Harborne on behalf of School of Biological Sciences