Intercomparison of shallow water bathymetry, hydro-optics, and benthos mapping techniques in Australian and Caribbean coastal environments

Dekker, Arnold G., Phinn, Stuart R., Anstee, Janet, Bissett, Paul, Brando, Vittorio E., Casey, Brandon, Fearns, Peter, Hedley, John, Klonowski, Wojciech, Lee, Zhong P., Lynch, Merv, Lyons, Mitchell, Mobley, Curtis and Roelfsema, Chris (2011) Intercomparison of shallow water bathymetry, hydro-optics, and benthos mapping techniques in Australian and Caribbean coastal environments. Limnology and Oceanography: Methods, 9 9: 396-425. doi:10.4319/lom.2011.9.396

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Author Dekker, Arnold G.
Phinn, Stuart R.
Anstee, Janet
Bissett, Paul
Brando, Vittorio E.
Casey, Brandon
Fearns, Peter
Hedley, John
Klonowski, Wojciech
Lee, Zhong P.
Lynch, Merv
Lyons, Mitchell
Mobley, Curtis
Roelfsema, Chris
Title Intercomparison of shallow water bathymetry, hydro-optics, and benthos mapping techniques in Australian and Caribbean coastal environments
Journal name Limnology and Oceanography: Methods   Check publisher's open access policy
ISSN 1541-5856
Publication date 2011-09-01
Year available 2011
Sub-type Article (original research)
DOI 10.4319/lom.2011.9.396
Open Access Status Not Open Access
Volume 9
Issue 9
Start page 396
End page 425
Total pages 30
Place of publication Waco, TX, United States
Publisher American Society of Limnology and Oceanography
Language eng
Formatted abstract
Science, resource management, and defense need algorithms capable of using airborne or satellite imagery to accurately map bathymetry, water quality, and substrate composition in optically shallow waters. Although a variety of inversion algorithms are available, there has been limited assessment of performance and no work has been published comparing their accuracy and efficiency. This paper compares the absolute and relative accuracies and computational efficiencies of one empirical and five radiative-transfer-based published approaches applied to coastal sites at Lee Stocking Island in the Bahamas and Moreton Bay in eastern Australia. These sites have published airborne hyperspectral data and field data. The assessment showed that (1) radiative-transfer-based methods were more accurate than the empirical approach for bathymetric retrieval, and the accuracies and processing times were inversely related to the complexity of the models used; (2) all inversion methods provided moderately accurate retrievals of bathymetry, water column inherent optical properties, and benthic reflectance in waters less than 13 m deep with homogeneous to heterogeneous benthic/substrate covers; (3) slightly higher accuracy retrievals were obtained from locally parameterized methods; and (4) no method compared here can be considered optimal for all situations. The results provide a guide to the conditions where each approach may be used (available image and field data and processing capability). A re-analysis of these same or additional sites with satellite hyperspectral data with lower spatial and radiometric resolution, but higher temporal resolution would be instructive to establish guidelines for repeatable regional to global scale shallow water mapping approaches
Keyword Dissolved Organic-Matter
Remote-Sensing Imagery
Lee-Stocking Island
Moreton Bay
Coral-Reef
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Geography, Planning and Environmental Management Publications
Official 2012 Collection
 
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