Radiometric characterisation of vineyard soils, Western Cape, South Africa

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dc.contributor.advisorNewman, Richard T.
dc.contributor.advisorLindsay, Robbie
dc.contributor.authorMlwilo, Nolasco Anton
dc.contributor.otherDept. of Physics
dc.contributor.otherFaculty of Arts
dc.date.accessioned2013-08-08T10:03:06Z
dc.date.accessioned2024-05-14T13:26:43Z
dc.date.available2011/10/14 14:12
dc.date.available2011/10/14
dc.date.available2013-08-08T10:03:06Z
dc.date.available2024-05-14T13:26:43Z
dc.date.issued2010
dc.descriptionPhilosophiae Doctor - PhDen_US
dc.description.abstractThis study is aimed at investigating the feasibility of using the radiometric technique as an alternative to traditional methods for determining soil physico-chemical parameters which are important for terroir characterization. In-situ and ex-situ radiometric analyses of soil from three vineyard blocks of Simonsig Wine Estate in the Stellenbosch district (Western Cape, South Africa) were studied. A mobile MEDUSA gamma-ray detection system comprising a CsI(Na) crystal (length 15 cm, diameter 7 cm) and associated electronics mounted on a portable trolley were used for partial terroir characterisation. Thereafter activity concentrations of 40K, 232Th series and 238U series in soil (top ~30 cm) from the measured MEDUSA spectra (0 - 3 MeV) were extracted by means of the full-spectrum analysis (FSA) method. A lead-shielded HPGe detector was used for analyzing collected soil samples while soil physico-chemical parameters were analysed using standard methods at research and commercial laboratories.en_US
dc.description.countrySouth Africa
dc.identifier.urihttps://hdl.handle.net/10566/15026
dc.language.isoenen_US
dc.publisherUniversity of the Western Capeen_US
dc.rights.holderUniversity of the Western Capeen_US
dc.subjectGamma-ray spectroscopyen_US
dc.subjectIn-situ measurementsen_US
dc.subjectMEDUSA detectoren_US
dc.subjectHyperpure Germanium detectoren_US
dc.subjectSediment characterisationen_US
dc.subjectPhysico-chemical soil propertiesen_US
dc.subjectDetector efficiencyen_US
dc.subjectVineyardsen_US
dc.subjectFull spectrum analysisen_US
dc.subjectRadiometric mappingen_US
dc.titleRadiometric characterisation of vineyard soils, Western Cape, South Africaen_US
dc.typeThesisen_US

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