Particle Distributions and Index of Refraction Estimation for Canadian Waters

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Authors
  1. Forand, J.L.
  2. Fournier, G.R.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
Extensive measurements were carried out of the optical properties of seawater off the East and West Coasts of Canada using a full-spectrum near-forward angle nephelometer (NEARSCAT). Using a new phase function adapted specifically to scattering from water borne particles, we analyse the data from coastal waters in the Straits of Juan de Fuca and in the Gulf of St-Lawrence. We show explicitly how the spectral properties can be combined with the angular properties to more reliably extract the Junge exponent of the particle size distribution and the mean index of refraction of the particles. We obtain a simple analytic expression for the normalized cumulative phase function that can be used to compute the backscatter ratio, and its explicit wavelength dependence. Accurate estimation of this wavelength dependence is required for accurate hyper-spectral image prediction.
Keywords
NEARSCAT;Oceanic phase function
Date of publication
01 Jul 1999
Number of Pages
14
Reprinted from
SPIE, vol 3761, 1999, p 34-44
DSTKIM No
CA000871
CANDIS No
512641
Format(s):
Hardcopy;Document Image stored on Optical Disk

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