Index Catalog // ScholarsArchive@OSU

The spectral backscattering properties of marine particles

Creator:: Whitmire, Amanda L.
Abstract:: The inherent and apparent optical properties of different ocean regimes are the basis for all optical remote sensing of the ocean. Ecological information derived from remote sensors therefore relies on having a detailed understanding of how particulate backscattering and absorption contribute to the bulk optical signal. The absorption characteristics of...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Amanda L. Whitmire for the degree of Doctor of Philosophy in Oceanography presented on

Evaluation of dungeness crab pots as platforms of opportunity for ocean-observing research

Creator:: Childress, Jeremy L.
Abstract:: Oregon Fishermen in Ocean Observing Research (OrFIOOR) is a cooperative research program between ocean scientists and fishermen in the Pacific Northwest. Dungeness crab fishermen attach sensor packages (temperature and dissolved oxygen) to crab pots. The pots serve as platforms of opportunity for ocean observing. This study examines three principle questions...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Jeremy L

Spectral backscattering properties of marine phytoplankton cultures

Creator:: Whitmire, Amanda L., Pegau, W. Scott, Karp-Boss, Lee, Boss, Emmanuel, and Cowles, Timothy J.
Abstract:: The backscattering properties of marine phytoplankton, which are assumed to vary widely with differences in size, shape, morphology and internal structure, have been directly measured in the laboratory on a very limited basis. This work presents results from laboratory analysis of the backscattering properties of thirteen phytoplankton species from five...
Resource Type:: Article
Full Text:: 37. J. M. Sullivan, M. S. Twardowski, P. L. Donaghay, and S. A. Freeman, “Use of optical scattering

Edge gradients provide evidence of ecological interactions in planktonic thin layers

Creator:: Benoit-Bird, Kelly J., Cowles, Timothy J., and Wingard, Christopher E.
Abstract:: Physical, optical, and acoustical data from Monterey Bay, California, USA, describing the distributions of phytoplankton, zooplankton, and small fish as well as gradients in the physical habitat were used to examine the interactions between vertically compressed plankton structures (thin layers), their consumers, and the local physical forces they experience. The...
Resource Type:: Article
Full Text:: . HOLLIDAY, C. F. GREENLAW, P. L. DONAGHAY, AND T. J. COWLES. 2007. Effects of mesoscale physical processes

The inherent optical properties of the oceans: from closure to prediction

Creator:: Barnard, Andrew Heath
Abstract:: Precise in situ measurement of the spectral absorption and scattering coefficients in several regions has revealed patterns in the distribution of the inherent optical properties on spatial scales that were previously unobtainable. The precision of the measurements was found to be consistent and unbiased across a variety of oceanic regimes...
Resource Type:: Dissertation
Full Text:: Dekshenieks, Percy Donaghay, and Chuck Trees. I thank Casey Moore for giving me the opportunity to learn

Bio-physical interactions of small pelagic fish schools and zooplankton prey in the California Current System over multiple scales

Creator:: Kaltenberg, Amanda May
Abstract:: Small pelagic fish represent a critical trophic link between plankton and large predators in marine upwelling ecosystems such as the California Current System. Populations of these fish are highly variable over time and are characterized by extreme fluctuations in abundance, which have significant ecosystem impacts. The causes driving this instability...
Resource Type:: Dissertation

Vertical distribution patterns of plankton and their relationship to physical factors over the continental shelf off Oregon

Creator:: Sutor, Malinda
Abstract:: Discrete layers of phytoplankton and zooplankton were observed over the Oregon continental shelf in summer and fall of 2001 and summer 2002 using optical and acoustical technologies and a pump sampling system. Layers of phytoplankton had steep vertical gradients which were associated with gradients in density and local peaks in...
Resource Type:: Dissertation
Full Text:: . H. Barnard, E. Boss, J. F. Case, T. J. Cowles, P. Donaghay, L. B. Eisner, D. J. Gifford, C. F

Relationships of in situ spectral absorption, pigment ratios and environmental parameters for phytoplankton assemblages in coastal waters

Creator:: Eisner, Lisa B.
Abstract:: In situ optical measurements of spectral absorption and beam attenuation provide information on the fine scale horizontal and vertical variations in phytoplankton pigments and other measures of phytoplankton photophysiology and ecology in coastal waters. Phytoplankton pigment ratios from discrete sample analyses with High Performance Liquid Chromatography were compared to in...
Resource Type:: Dissertation

Optical scattering and backscattering by organic and inorganic particulates in U.S. coastal waters

Creator:: Snyder, William A., Arnone, Robert A., Davis, Curtiss O., Goode, Wesley, Gould, Richard W., Ladner, Sherwin, Lamela, Gia, Rhea, William J., Stavn, Robert, Sydor, Michael, and Weidemann, Allen
Abstract:: We present the results of a study of optical scattering and backscattering of particulates for three coastal sites that represent a wide range of optical properties that are found in U.S. near-shore waters. The 6000 scattering and backscattering spectra collected for this study can be well approximated by a power-law...
Resource Type:: Article
Full Text:: ,” Appl. Opt. 38, 7442–7455 (1999). 6. M. S. Twardowski, E. Boss, J. M. Sullivan, and P. L. Donaghay

Spectral particulate attenuation and particle size distribution in the bottom boundary layer of a continental shelf

Creator:: Boss, Emmanuel, Pegau, W. Scott, Gardner, Wilford D., Zaneveld, J. Ronald, Barnard, Andrew H., Twardowski, Michael S., Chang, G. C., and Dickey, T. D.
Abstract:: Spectral attenuation and absorption coefficients of particulate matter and collocated hydrographic measurements were obtained in the Mid-Atlantic Bight during the fall of 1996 and the spring of 1997 as part of the Coastal Mixing and Optics experiment. Within the bottom boundary layer (BBL) the magnitude of the beam attenuation decreased...
Resource Type:: Article
Full Text:: . Twardowski, M. S., J. M. Sullivan, P. L. Donaghay, and J. R. V. Zaneveld, Microscale quantification of the

ScholarsArchive@OSU

The spectral backscattering properties of marine particles

Evaluation of dungeness crab pots as platforms of opportunity for ocean-observing research

Spectral backscattering properties of marine phytoplankton cultures

Edge gradients provide evidence of ecological interactions in planktonic thin layers

The inherent optical properties of the oceans: from closure to prediction

Bio-physical interactions of small pelagic fish schools and zooplankton prey in the California Current System over multiple scales

Vertical distribution patterns of plankton and their relationship to physical factors over the continental shelf off Oregon

Relationships of in situ spectral absorption, pigment ratios and environmental parameters for phytoplankton assemblages in coastal waters

Optical scattering and backscattering by organic and inorganic particulates in U.S. coastal waters

Spectral particulate attenuation and particle size distribution in the bottom boundary layer of a continental shelf

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