Hyperspectral temperature and salt dependencies of absorption by water and heavy water in the 400-750 nm spectral range Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/79407z696

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The temperature and salt dependencies of absorption by liquid water (H₂O) and heavy water (D₂O) were determined using a hyperspectral absorption and attenuation meter (WET Labs, AC-S). Sodium chloride (NaCl) was used as a proxy for seawater salts. There was no significant temperature (ψₜ) or salt (ψₛ) dependency of absorption at wavelengths <550 nm. At wavelengths >550 nm, ψₜ exhibited peaks at ~604, 662, and 740 nm. A small negative trough in ψₛ occurred at ~590 nm, followed by a small positive peak ~620 nm, a larger negative trough at ~720 nm, and a strong positive peak at ~755 nm. The salt dependency of absorption by heavy water, ψₛᴴ, exhibited a negative power-law shape with very low ψₛᴴ, at wavelengths >550 nm. Our experiments with NaCl, clean open ocean seawater, and artificial seawater support the hypothesis that salts modify the absorption spectra of seawater by modifying the molecular matrix and vibrations of pure water.
Resource Type
DOI
Date Available
Date Issued
Citation
  • James M. Sullivan, Michael S. Twardowski, J. Ronald V. Zaneveld, Casey M. Moore, Andrew H. Barnard, Percy L. Donaghay, and Bruce Rhoades, "Hyperspectral temperature and salt dependencies of absorption by water and heavy water in the 400-750 nm spectral range," Applied Optics, 45, 5294-5309 (2006) http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-21-5294
Series
Rights Statement
Related Items
Funding Statement (additional comments about funding)
Publisher
Language
Replaces
Additional Information
  • This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2012-02-20T22:07:39ZNo. of bitstreams: 1ZaneveldRonaldCEOASHyperspectralTemperatureSalt.pdf: 870939 bytes, checksum: c4169c4bbb5dcedc88be298536146cd6 (MD5)
  • description.provenance : Made available in DSpace on 2012-02-20T22:07:39Z (GMT). No. of bitstreams: 1ZaneveldRonaldCEOASHyperspectralTemperatureSalt.pdf: 870939 bytes, checksum: c4169c4bbb5dcedc88be298536146cd6 (MD5) Previous issue date: 2006-07-20

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items