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Characterisation of Coastal Sediment Properties from Spectral Reflectance Data

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dc.contributor.author Mohamed, Mohamed Abd Elbasit
dc.date.accessioned 2023-09-13T09:22:37Z
dc.date.available 2023-09-13T09:22:37Z
dc.date.issued 2022
dc.identifier.uri https://www.mdpi.com/2076-3417/12/13/6826
dc.identifier.uri http://hdl.handle.net/20.500.12821/515
dc.description.abstract Remote sensing of coastal sediments for the purpose of automated mapping of their physical properties (grain size, mineralogy and carbonate content) across space has not been widely applied globally or in South Africa. This paper describes a baseline study towards achieving this aim by examining the spectral reflectance signatures of field sediment samples from a beach–dune system at Oyster Bay, Eastern Cape, South Africa. Laboratory measurements of grain size and carbonate content of field samples (n = 134) were compared to laboratory measurements of the spectral signature of these samples using an analytical spectral device (ASD), and the results interrogated using different statistical methods. These results show that the proportion of fine sand, CaCO3 content and the distributional range of sediment grain sizes within a sample (here termed span) are the parameters with greatest statistical significance—and thus greatest potential interpretive value—with respect to their spectral signatures measured by the ASD. These parameters are also statistically associated with specific wavebands in the visible and near infrared, and the shortwave infrared parts of the spectrum. These results show the potential of spectral reflectance data for discriminating elements of grain size properties of coastal sediments, and thus can provide the baseline towards achieving automated spatial mapping of sediment properties across coastal beach–dune environments using hyperspectral remote sensing techniques. en_US
dc.language.iso en en_US
dc.publisher Multidisciplinary Digital Publishing Institute (MDPI) en_US
dc.subject grain size analysis; coastal sediments; analytical spectral device; hyperspectral data en_US
dc.title Characterisation of Coastal Sediment Properties from Spectral Reflectance Data en_US
dc.type Article en_US


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