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Three-parameter active in situ optical measurements: theory, instrumentation, and results from coastal waters

McKee, D. and Cunningham, A. and Jones, K. (2002) Three-parameter active in situ optical measurements: theory, instrumentation, and results from coastal waters. Journal of Optics A: Pure and Applied Optics, 4 (4). S66-S70. ISSN 1464-4258

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Abstract

A submersible optical instrument has been designed and constructed which simultaneously measures chlorophyll fluorescence, beam attenuation and wide-angle light scattering in sea water. A theoretical framework is presented which shows that this instrument configuration is capable of quantitatively measuring concentrations of gelbstoff, suspended particles and phytoplankton when all three components are present in a mixture, provided the relevant set of calibration coefficients are known. The inherent variability of natural materials means that the numerical values of these calibration coefficients usually have to be determined at the site of instrument deployment. However, trials in optically complex waters indicate that the instrument can be usefully employed to interpolate between chemical measurements in order to increase the spatial and temporal coverage of survey data while minimizing the resources required for sample analysis.

Item type: Article
ID code: 23312
Keywords: fluorometry, nephelometry, transmissometry, multiparametric analysis, coastal waters, Optics. Light, Physics, Atomic and Molecular Physics, and Optics
Subjects: Science > Physics > Optics. Light
Science > Physics
Department: Faculty of Science > Physics
Faculty of Science > Pure and Applied Chemistry
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 07 Jul 2010 11:55
    Last modified: 05 Sep 2014 04:37
    URI: http://strathprints.strath.ac.uk/id/eprint/23312

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