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dc.contributor.authorAllan, Mathew Grant
dc.contributor.authorHamilton, David P.
dc.contributor.authorHicks, Brendan J.
dc.contributor.authorBrabyn, Lars
dc.identifier.citationAllan, M.G., Hamilton, D.P., Hicks, B.J. & Brabyn, L. (2011). Landsat remote sensing of chlorophyll a concentrations in central North Island lakes of New Zealand. International Journal of Remote Sensing, 32(7), 2037-2055.en_NZ
dc.description.abstractWe investigated the use of Landsat Enhanced Thematic Mapper (ETM) imagery to synoptically quantify chlorophyll a (chl a) concentrations. Two adjoining pairs of images of the central North Island were acquired on two different days in summer and spring 2002. 6sv atmospheric correction was compared to the cosine of the solar zenith angle correction (COST) dark object subtraction (DOS) atmospheric correction. The highest correlation between 6sv ln(Band 3) water surface reflectance and ln(chl a) was found in the 24 January 2002 image (r² = 0.954). 6sv atmospheric correction was preferable to COST-DOS as it gave more realistic reflectance values at a clear-water reference site and produced the highest correlation coefficient. The results from this investigation suggest that remote sensing provides a valuable tool to assess temporal and spatial distributions of chl a in unmonitored areas within lakes and that predictions may also be extended to unmonitored lakes within the domain of satellite image capture.en_NZ
dc.publisherTaylor & Francisen_NZ
dc.subjectLandsat Enhanced Thematic Mapperen_NZ
dc.subjectNew Zealanden_NZ
dc.titleLandsat remote sensing of chlorophyll a concentrations in central North Island lakes of New Zealanden_NZ
dc.typeJournal Articleen_NZ
dc.relation.isPartOfInternational Journal of Remote Sensingen_NZ

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