The impact of global climate change on the runoff and ecological sustainability of the Breede River

Simple item page
dc.contributor.advisorHewitson, Bruceen_ZA
dc.contributor.advisorArcher, Emmaen_ZA
dc.contributor.authorSteynor, Anna Cen_ZA
dc.date.accessioned2014-08-29T12:43:11Z
dc.date.available2014-08-29T12:43:11Z
dc.date.issued2004en_ZA
dc.descriptionIncludes bibliographical references (leaves 106-111).en_ZA
dc.description.abstractThe Breede River catchment in the South Western Cape is already under pressure for its water resources due to its supporting a variety of different land uses. The predominant land use in this catchment is agriculture, which demands the majority of river water for irrigation. The Department of Water Affairs and Forestry are currently investigating the future demand for water from the river, in this respect it is important to know what effect climate change will have on the change in river flow. Self Organising Maps (SOMs) are used to identify changes in the circulation systems contributing to the rainfall of the region and from this the potential change is assessed for the Breede River flow under future climate change. It is assessed that the runoff in the Breede River is expected to change under all the models of ECHAM4, CSIRO and HadAM. The magnitude of this alteration is calculated by using the change in the SOM node frequencies between the present and the future data. This is then subtracted from the present runoff data supplied by DWAF. A source of runoff decrease in the future is agricultural irrigation. The increase in irrigation under climate change is determined by inserting future climate data into an agricultural model. Once the increased amount of water used in irrigation is determined, it is subtracted from the projected future runoff. From this it is determined whether the river will be ecologically sustainable under climate change.en_ZA
dc.identifier.apacitationSteynor, A. C. (2004). <i>The impact of global climate change on the runoff and ecological sustainability of the Breede River</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Environmental and Geographical Science. Retrieved from http://hdl.handle.net/11427/6754en_ZA
dc.identifier.chicagocitationSteynor, Anna C. <i>"The impact of global climate change on the runoff and ecological sustainability of the Breede River."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Environmental and Geographical Science, 2004. http://hdl.handle.net/11427/6754en_ZA
dc.identifier.citationSteynor, A. 2004. The impact of global climate change on the runoff and ecological sustainability of the Breede River. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Steynor, Anna C AB - The Breede River catchment in the South Western Cape is already under pressure for its water resources due to its supporting a variety of different land uses. The predominant land use in this catchment is agriculture, which demands the majority of river water for irrigation. The Department of Water Affairs and Forestry are currently investigating the future demand for water from the river, in this respect it is important to know what effect climate change will have on the change in river flow. Self Organising Maps (SOMs) are used to identify changes in the circulation systems contributing to the rainfall of the region and from this the potential change is assessed for the Breede River flow under future climate change. It is assessed that the runoff in the Breede River is expected to change under all the models of ECHAM4, CSIRO and HadAM. The magnitude of this alteration is calculated by using the change in the SOM node frequencies between the present and the future data. This is then subtracted from the present runoff data supplied by DWAF. A source of runoff decrease in the future is agricultural irrigation. The increase in irrigation under climate change is determined by inserting future climate data into an agricultural model. Once the increased amount of water used in irrigation is determined, it is subtracted from the projected future runoff. From this it is determined whether the river will be ecologically sustainable under climate change. DA - 2004 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2004 T1 - The impact of global climate change on the runoff and ecological sustainability of the Breede River TI - The impact of global climate change on the runoff and ecological sustainability of the Breede River UR - http://hdl.handle.net/11427/6754 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/6754
dc.identifier.vancouvercitationSteynor AC. The impact of global climate change on the runoff and ecological sustainability of the Breede River. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Environmental and Geographical Science, 2004 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/6754en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Environmental and Geographical Scienceen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherEnvironmental and Geographical Scienceen_ZA
dc.titleThe impact of global climate change on the runoff and ecological sustainability of the Breede Riveren_ZA
dc.typeThesis
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
thesis_sci_2004_steynor_ac.pdf
Size:
4.44 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Other Theses