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The bio-optical detection of harmful algal blooms
Includes bibliographical references (p. 176-188).
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Oceanography
2014
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| _version_ | 1867613329870028801 |
|---|---|
| access_status_str | Open Access |
| author | Bernard, Stewart |
| author2 | Probyn, Trevor |
| author_browse | Bernard, Stewart Probyn, Trevor |
| author_facet | Probyn, Trevor Bernard, Stewart |
| author_sort | Bernard, Stewart |
| collection | Thesis |
| description | Includes bibliographical references (p. 176-188). |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/6461 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:34:25.395Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Oceanography |
| publisherStr | Department of Oceanography |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/6461 The bio-optical detection of harmful algal blooms Bernard, Stewart Probyn, Trevor Shillington, Frank Oceanography Includes bibliographical references (p. 176-188). An analytical framework for the simulation and quantitative interpretation of ocean colour data is presented, providing an inverse reflectance algorithm designed for the detection of harmful algal blooms. The adopted framework focuses on 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 the determinant variables of the IOPs associated with natural algal assemblages, and provide a means of simulating these IOPs. Algal size is an important determinant of optical properties, and the study demonstrates algal IOP simulation, using equivalent particle size distributions that can be simply parameterised with regard to effective cell diameter. Statistical analyses of causal variability are also conducted on absorption data from a variety of natural algal assemblages, revealing the relative importance of cell size, intracellular Chi a concentration, and accessory pigment complement. An improved understanding of algal angular scattering is regarded as key to the analytical modelling of ocean colour, and the use of two-layered spherical models for the simulation of algal scattering properties is investigated. Preliminary validation of the combined use of the equivalent size and two-layered models indicates that they are capable of adequately simulating the remote-sensing reflectance properties of high biomass bloom waters. 2014-08-13T19:48:22Z 2014-08-13T19:48:22Z 2005 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/6461 eng application/pdf Department of Oceanography Faculty of Science University of Cape Town |
| spellingShingle | Oceanography Bernard, Stewart The bio-optical detection of harmful algal blooms |
| thesis_degree_str | Doctoral |
| title | The bio-optical detection of harmful algal blooms |
| title_full | The bio-optical detection of harmful algal blooms |
| title_fullStr | The bio-optical detection of harmful algal blooms |
| title_full_unstemmed | The bio-optical detection of harmful algal blooms |
| title_short | The bio-optical detection of harmful algal blooms |
| title_sort | bio optical detection of harmful algal blooms |
| topic | Oceanography |
| url | http://hdl.handle.net/11427/6461 |
| work_keys_str_mv | AT bernardstewart thebioopticaldetectionofharmfulalgalblooms AT bernardstewart bioopticaldetectionofharmfulalgalblooms |