Article
 

A comparison of methods for the measurement of the absorption coefficient in natural waters

Público Deposited

Conteúdo disponível para baixar

Baixar PDF
https://ir.library.oregonstate.edu/concern/articles/6t053h54g

Descriptions

Attribute NameValues
Creator
Abstract
  • In the spring of 1992 an optical closure experiment was conducted at Lake Pend Oreille, Idaho. A primary objective of the experiment was to compare techniques for the measurement of the spectral absorption coefficient and other inherent optical properties of natural waters. Daily averages of absorption coefficients measured using six methods are compared at wavelengths of 456, 488, and 532 nm. Overall agreement was within 40% at 456 nm and improved with increasing wavelength to 25% at 532 nm. These absorption measurements were distributed over the final 9 days of the experiment, when bio-optical conditions in Lake Pend Oreille (as indexed by the beam attenuation coefficient cp(660) and chlorophyll a fluorescence profiles) were representative of those observed throughout the experiment. However, profiles of stimulated chlorophyll a fluorescence and beam transmission showed that bio-optical properties in the lake varied strongly on all time and space scales. Therefore environmental variability contributed significantly to deviations between daily mean absorption coefficients measured using the different techniques.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Pegau, W., et al. (1995), A comparison of methods for the measurement of the absorption coefficient in natural waters, J. Geophys. Res., 100(C7), 13201-13220.
Journal Title
Journal Volume
  • 100
Declaração de direitos
Publisher
Language
Replaces

Relações

Parents:

This work has no parents.

Itens

Miniatura Título Data de carga Acesso Ações
file details Pegau_et_al_JGR_1995.pdf 2017-07-21 Público Baixar