Charles Darwin University

CDU eSpace
Institutional Repository

 
CDU Staff and Student only
 

A composite DOP approach to excluding bottom reflectance in mapping water parameters of shallow coastal zones from TM imagery

Islam, A, Gao, J, Ahmad, W, Neil, D and Bell, P (2004). A composite DOP approach to excluding bottom reflectance in mapping water parameters of shallow coastal zones from TM imagery. Remote Sensing of Environment,92(1):40-51.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 8 times in Scopus Article | Citations

Google Scholar Search Google Scholar

Title A composite DOP approach to excluding bottom reflectance in mapping water parameters of shallow coastal zones from TM imagery
Author Islam, A
Gao, J
Ahmad, W
Neil, D
Bell, P
Journal Name Remote Sensing of Environment
Publication Date 2004
Volume Number 92
Issue Number 1
ISSN 0034-4257   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-3242707675
Start Page 40
End Page 51
Total Pages 12
Place of Publication London, UK
Publisher Elsevier
Field of Research 0406 - Physical Geography and Environmental Geoscience
0499 - Other Earth Sciences
0909 - Geomatic Engineering
HERDC Category C1 - Journal Article (DEST)
Abstract In this paper we proposed a composite depth of penetration (DOP) approach to excluding bottom reflectance in mapping water quality parameters from Landsat thematic mapper (TM) data in the shallow coastal zone of Moreton Bay, Queensland, Australia. Three DOPs were calculated from TM1, TM2 and TM3, in conjunction with bathymetric data, at an accuracy ranging from +/-5% to +/-23%. These depths were used to segment the image into four DOP zones. Sixteen in situ water samples were collected concurrently with the recording of the satellite image. These samples were used to establish regression models for total suspended sediment (TSS) concentration and Secchi depth with respect to a particular DOP zone. Containing identical bands and their transformations for both parameters, the models are linear for TSS concentration, logarithmic for Secchi depth. Based on these models, TSS concentration and Secchi depth were mapped from the satellite image in respective DOP zones. Their mapped patterns are consistent with the in situ observed ones. Spatially, overestimation and underestimation of the parameters are restricted to localised areas but related to the absolute value of the parameters. The mapping was accomplished more accurately using multiple DOP zones than using a single zone in shallower areas. The composite DOP approach enables the mapping to be extended to areas as shallow as
Keywords water quality
depth of penetration
quantitative remote sensing
shallow coastal zone
multispectral imagery
quality
sea
DOI http://dx.doi.org/10.1016/j.rse.2004.05.006   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
Additional Notes School of Science and Primary Industries. Department of Earth Science
 
Versions
Version Filter Type
Access Statistics: 155 Abstract Views  -  Detailed Statistics
Created: Wed, 28 Nov 2007, 14:16:08 CST