Landsat : water quality surveillance of Roodeplaat Dam

 

Show simple item record

dc.contributor.advisor Rüther, Heinz en_ZA
dc.contributor.author Howman, Alison M en_ZA
dc.date.accessioned 2016-02-17T07:11:04Z
dc.date.available 2016-02-17T07:11:04Z
dc.date.issued 1986 en_ZA
dc.identifier.citation Howman, A. 1986. Landsat : water quality surveillance of Roodeplaat Dam. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/17068
dc.description Bibliography: pages 104-118. en_ZA
dc.description.abstract The need for accurate, synoptic, up to date information, concerning the quality of South African impoundments, prompted a study into the relationship between Landsat reflectance data and chlorophyll ~ and turbidity in Roodeplaat Dam. Surface and integrated chlorophyll a as well as surface and integrated turbidity were collected simultaneously with the satellite's overpass, from 32 sampling sites on the impoundment. Six days, between 81.10 .14 and 82 .11.16, were cloud free and the data were analysed in order to establish the relationship between the specific water quality conditions and the satellite reflectance data. Prior to the analysis certain factors required attention. Firstly, it was important to accurately align the sampling sites with their corresponding Landsat pixels. Secondly, the satellite reflectance data were corrected for influences of haze and the angle of the sun. Thirdly, the requirement that the water quality surface reference data be representative of the range of conditions in the impoundment was recognised. Lastly, the interrelationship between chlorophyll a and turbidity and the multicollinearity evident between the four reflectance bands, demanded that a multi-variate statistical technique be implemented, in order to adequately analyse the available data. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Applied Science en_ZA
dc.title Landsat : water quality surveillance of Roodeplaat Dam en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department School of Architecture, Planning and Geomatics en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Howman, A. M. (1986). <i>Landsat : water quality surveillance of Roodeplaat Dam</i>. (Thesis). University of Cape Town ,Faculty of Science ,School of Architecture, Planning and Geomatics. Retrieved from http://hdl.handle.net/11427/17068 en_ZA
dc.identifier.chicagocitation Howman, Alison M. <i>"Landsat : water quality surveillance of Roodeplaat Dam."</i> Thesis., University of Cape Town ,Faculty of Science ,School of Architecture, Planning and Geomatics, 1986. http://hdl.handle.net/11427/17068 en_ZA
dc.identifier.vancouvercitation Howman AM. Landsat : water quality surveillance of Roodeplaat Dam. [Thesis]. University of Cape Town ,Faculty of Science ,School of Architecture, Planning and Geomatics, 1986 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17068 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Howman, Alison M AB - The need for accurate, synoptic, up to date information, concerning the quality of South African impoundments, prompted a study into the relationship between Landsat reflectance data and chlorophyll ~ and turbidity in Roodeplaat Dam. Surface and integrated chlorophyll a as well as surface and integrated turbidity were collected simultaneously with the satellite's overpass, from 32 sampling sites on the impoundment. Six days, between 81.10 .14 and 82 .11.16, were cloud free and the data were analysed in order to establish the relationship between the specific water quality conditions and the satellite reflectance data. Prior to the analysis certain factors required attention. Firstly, it was important to accurately align the sampling sites with their corresponding Landsat pixels. Secondly, the satellite reflectance data were corrected for influences of haze and the angle of the sun. Thirdly, the requirement that the water quality surface reference data be representative of the range of conditions in the impoundment was recognised. Lastly, the interrelationship between chlorophyll a and turbidity and the multicollinearity evident between the four reflectance bands, demanded that a multi-variate statistical technique be implemented, in order to adequately analyse the available data. DA - 1986 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1986 T1 - Landsat : water quality surveillance of Roodeplaat Dam TI - Landsat : water quality surveillance of Roodeplaat Dam UR - http://hdl.handle.net/11427/17068 ER - en_ZA


Files in this item

This item appears in the following Collection(s)

Show simple item record