Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 38 for “"Bio-optical"”.
-
A bio-optical probe of tryptophyl exposure
… (M.S.)--Michigan State University. Dept. of Biophysics, 1974
-
The bio-optical detection of harmful algal blooms
… establishing quantitative relationships between optically important algal intracellular properties and inherent optical properties (IOPs), such as the absorption and backscattering coefficients, and the resultant effects on remote-sensing reflectance. A principal aim of the study is to establish …
-
Distinguishing cyanobacteria from algae using bio-optical remote sensing
… species) on the basis of their distinctive bio-optical features is tested using a novel in situ bio-optical dataset and remotely sensed data from the Medium Resolution Imaging Spectrometer (MERIS). The in situ dataset was collected between 2010 and 201 2 from three optically-diverse South …
-
Bio-Optical Properties of the Arctic Waters: Empirical and Theoretical Observations
<p>Bio-optical observations were made during August 2000 in the Beaufort and Chukchi Seas. Chlorophyll <em>a</em> concentration (Chl) ranged from 0.068 to 18.51 mg chl m<sup>−3</sup>. Both total particulate and phytoplankton absorption at 443 nm were closely correlated with chlorophyll …
-
Bio-optical investigation of phytoplankton production in the southern Benguela ecosystem
This study aims to evaluate various existing models for the estimation of PP in the southern Benguela ecosystem, and to investigate the photophysiological responses of phytoplankton to changes in environmental conditions.
-
A Coupled Bio-Optical and Mixed Layer Model for the Equatorial Pacific
<p>A one dimensional coupled bio-optical and mixed layer model is developed and applied to problems involving the role of phytoplankton-induced turbidity (PIT) on the vertical structure and heating of the upper ocean in the Equatorial Pacific Ocean. The bio-optical and mixed layer model for …
-
The chemical and bio-optical characterisation of gelbstoff in southern African waters : a preliminary analysis
This study will attempt to begin the bio-optical characterisation of gelbstoff in southern African waters. Gelbstoff is a collective term, in itself perhaps an indication of a poorly understood phenomenon, given to a complex group of macromolecular organic compounds. It is the common bio-optical …
-
A bio-optical approach to phytoplankton community sturcture, physiology and primary production on the Weddell Gyre
… detailed understanding of the sensitivity of the biological carbon pump to variability in physical forcing mechanisms in order to predict its continuing role. However, due to the remote and tempestuous nature of this region, in situ measurements of phytoplankton variability are scarce. …
-
The Observation, Modeling, and Retrieval of Bio-Optical Properties for Coastal Waters of the Southern Chesapeake Bay
… an inverse method to retrieve the inherent optical properties (IOPs) and biogeochemical parameters (e.g. chlorophyll <em>a</em> concentration and salinity) appropriate to monitor the water quality and biogeochemical processes from remote sensing of the coastal waters in the southern …
-
Development of bio-optical algorithms to estimate chlorophyll in the Great Salt Lake and New England lakes using in situ hyperspectral measurements
… integrating the chemical, physical and biological state of a lake. Assessment of chlorophyll conditions in lakes can be greatly enhanced by the use of remote sensing, allowing information to be gathered at spatial and temporal scales not possible with traditional limnological sampling …
-
A study of the New York / New Jersey coastal water : bio-optical characteristics of the harbor estuary and the effects of heavy metals on brown tide alga of the bight
… is not as well understood. Growth rate and bioaccumulation from exposure to trace metals demonstrated that nickel promoted brown tide growth and that the occurrence of the blooms may significantly influence the fate of cadmium and zinc. On the other hand, in the NY/NJ Harbor Estuary diatom …
-
Specific applications of satelite remote sensing to the Benguela ecosystem
… previously undertaken. The standard for SeaWiFS bio-optical algorithms and processing parameters are not ideal for the highly productive Benguela waters. Hence, a detailed investigation was undertaken, and the processing parameters modified for more optical application to Benguela waters. …
-
Multi-sensor mooring development and its use to characterise physical processes relevant to harmful algal bloom dynamics in the St Helena Bay area, South Africa
… The instrument package on the buoy provides bio-optical data analogous to remote sensing reflectance, temperature and current profile data, and fluorescence. The locally developed mooring and observing system is the only real-time, bio-optical mooring in southern Africa. Its development, and …
-
The use of sun-induced fluorescence to remotely characterise phytoplankton dynamics
… dynamics in the southern Benguela via in situ bio-optical moorings, and through the use of satellite sensors.
-
Qualitative and quantitative analyses of Lake Baikal's surface-waters using ocean colour satellite data (SeaWiFS)
… of the most difficult issues when dealing with optical water remote-sensing is its acceptance as a useful application for environmental research. This problem is, on the one hand, concerned with the optical complexity and variability of the investigated natural media, and therefore the question …
-
Ocean color modeling: Parameterization and interpretation
… dissolved and particulate substances, known as "optically-active constituents," in the upper water column. The goal of ocean color modeling is to interpret an ocean color spectrum quantitatively to estimate the suite of optically-active constituents near the surface. In recent years, ocean color …
-
Evaluation of a semi-analytical approach to the retrieval of water quality parameters from optical data in European coastal Case-II waters
… the validity of radiative transfer theory and bio-optical models that have been developed primarily for open ocean waters. To obtain water quality parameters from reflectance measurements we employ a non-linear inversion method (Gauss-Newton). Algorithm parameters are established to ensure …
-
Modeling Nutrient and Plankton Processes in the California Coastal Transition Zone
<p>Two time- and space-dependent, physical-bio-optical models have been developed for the California Coastal Transition Zone (CTZ) region with the overall objective of understanding and quantifying the processes th at contribute to the spatial and temporal development of nutrient and plankton …
Page 1 of 2