OSA's Digital Library

Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 9, Iss. 4 — Apr. 1, 2014

Optically significant particle sizes in seawater

Emlyn J. Davies, David McKee, David Bowers, George W. Graham, and W. Alex M. Nimmo-Smith  »View Author Affiliations


Applied Optics, Vol. 53, Issue 6, pp. 1067-1074 (2014)
http://dx.doi.org/10.1364/AO.53.001067


View Full Text Article

Enhanced HTML    Acrobat PDF (1341 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Small particles (<10μm) are often considered to play the dominant role in controlling scattering and absorption due to their relatively large numbers, which are typically found in the ocean. Here we present an approach for quantifying the size range of particles that contribute significantly to bulk inherent optical properties. We present a numerical assessment of the variability in optically significant particle sizes for simplistic populations that conform to the assumptions of homogeneous, spherical particles, and power-law size distributions. We use numerical predictions from Mie theory to suggest minimum and maximum particle sizes required for accurate predictions and observations of ocean optics for different particle size distributions (PSDs). When considering observed ranges of PSDs, our predictions suggest the need for measurements of optical properties and particles to capture information from particle sizes between diameters of 0.05–2000 μm in order to properly constrain relationships between particles and their associated optical properties. Natural particle populations in the ocean may present more complex PSDs that could be analyzed using the method presented here to establish optically significant size classes.

© 2014 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(290.4020) Scattering : Mie theory
(290.5850) Scattering : Scattering, particles
(290.7050) Scattering : Turbid media
(010.4458) Atmospheric and oceanic optics : Oceanic scattering

ToC Category:
Scattering

History
Original Manuscript: October 15, 2013
Revised Manuscript: December 19, 2013
Manuscript Accepted: January 15, 2014
Published: February 12, 2014

Virtual Issues
Vol. 9, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Emlyn J. Davies, David McKee, David Bowers, George W. Graham, and W. Alex M. Nimmo-Smith, "Optically significant particle sizes in seawater," Appl. Opt. 53, 1067-1074 (2014)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-53-6-1067


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. D. Eisma, “Flocculation and de-flocculation of suspended matter in estuaries,” Netherlands J. Sea Res. 20, 183–199 (1986).
  2. T. G. Milligan, “Particle (floc) size measurements with benthos 373 plankton silhouette camera,” J. Sea Res. 1, 93–100 (1996).
  3. R. A. Reynolds, D. Stramski, A. M. Wright, and S. B. Wozniak, “Measurements and characterization of particle size distributions in coastal waters,” J. Geophys. Res. 115, C08024 (2010).
  4. G. W. Graham, E. J. Davies, W. A. M. Nimmo-Smith, D. G. Bowers, and K. M. Braithwaite, “Interpreting LISST-100X measurements of particles with complex shape using digital in-line holography,” J. Geophys. Res. 117, C05034 (2012).
  5. D. McKee and A. Cunningham, “Identification and characterization of two optical water types in the Irish Sea from in-situ inherent optical properties and seawater constituents,” Estuar. Coast. Shelf Sci. 68, 305–316 (2006). [CrossRef]
  6. G. Chang and A. L. Whitmire, “Effects of bulk particle characteristics on backscattering and optical closure,” Opt. Express 17, 2132–2142 (2009). [CrossRef]
  7. D. Risović, “Two component model of the sea particle size distribution,” Deep Sea Res. Part I 40, 1459–1473 (1993).
  8. M. Jonasz and G. Fournier, “Approximation of the size distribution of marine particles by a sum of log-normal functions,” Limnol. Oceanogr. 41, 744–754 (1996). [CrossRef]
  9. D. Stramski and D. A. Kiefer, “Light scattering by microorganisms in the open ocean,” Prog. Oceanogr. 28, 343–383 (1991). [CrossRef]
  10. M. Babin, A. Morel, V. Fournier-Sicre, F. Fell, and D. Stramski, “Light scattering properties of marine particles in coastal and open ocean waters as related to the particle mass concentration,” Limnol. Oceanogr. 48, 843–859 (2003). [CrossRef]
  11. M. Jonasz and G. R. Fournier, Light Scattering by Particles in Water: Theoretical and Experimental Foundations (Elsevier Academic, 2007).
  12. W. H. Slade and E. Boss, “Calibrated near-forward volume scattering function obtained from the LISST particle sizer,” Opt. Express 14, 8, 3602–3615 (2006). [CrossRef]
  13. C. F. Bohren and D. R. Huffman, Absorption and Scattering of Light by Small Particles (Wiley, 1983).
  14. E. Aas, “Refractive index of phytoplankton derived from its metabolite composition,” J. Plankton Res. 12, 2223–2249 (1996).
  15. H. C. van de Hulst, Light Scattering by Small Particles (Dover, 1955).
  16. A. Khelifa and P. S. Hill, “Models for effective density and settling velocity of flocs,” J. Hydraul. Res. 44, 390–401 (2006).
  17. E. Boss, W. H. Slade, and P. S. Hill, “Effect of particulate aggregation in aquatic environments on the beam attenuation and its utility as a proxy for particulate mass,” Opt. Express 17, 9408–9420 (2009).
  18. G. Dall’Olmo, T. K. Westberry, M. J. Behrenfeld, E. Boss, and W. H. Slade, “Significant contribution of large particle to optical backscattering in the open ocean,” Biogeosciences 6, 947–967 (2009).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited