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    Assessment of Acid Sulphate Soil both on surface and in subsurface using hyperspectral data

    Access Status
    Fulltext not available
    Authors
    Shi, Xianzhong
    Aspandiar, Mehrooz
    Oldmeadow, David
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Shi, X. and Aspandiar, M. and Oldmeadow, D. 2013. Assessment of Acid Sulphate Soil both on surface and in subsurface using hyperspectral data. Canadian Journal of Remote Sensing. 39 (6): pp. 468-480.
    Source Title
    Canadian Journal of Remote Sensing
    DOI
    10.5589/m13-054
    ISSN
    1712-7971
    School
    Department of Applied Geology
    URI
    http://hdl.handle.net/20.500.11937/33846
    Collection
    • Curtin Research Publications
    Abstract

    Acid sulphate soils (ASS) are widely spread around the world and are potentially harmful to the environment due to their strong acidity producing ability and their capability to release trace metals. Secondary iron-bearing minerals produced by ASS, have diagnostic spectral features in the visible-near infrared to short-wave infrared spectral range and can be good indicators to the severity of the effects of ASS. Therefore, it is possible to detect ASS using hyperspectral sensing by mapping these indicative iron-bearing minerals. Iron oxides, hydroxides, hydroxysulphates, as well as noniron-bearing minerals, were mapped using airborne Hyperspectral Mapper data. Subsequently, a soil pH map of the surface was deduced according to the relationship between the indicative mineral species and measured pH values. Furthermore, this study investigated the presence of ASS in the subsurface by the proximal hyperspectral sensing HyLogger system, together with soil coring and soil property measurements. This allowed the acquisition of mineralogy, pH, and other soil properties at different subsurface depths. Thus, comprehensive understanding and estimation of ASS, both on the surface and in the subsurface, were attained.

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    • Using hyperspectral data and PLSR modelling to assess acid sulphate soil in subsurface
      Shi, Xianzhong; Aspandiar, Mehrooz; Oldmeadow, David (2014)
      Purpose - Acid sulphate soil (ASS) has raised increasing environmental concerns because of its capability to produce strong acidity and consequent trace metal release. It is difficult to assess the occurrence and severity ...
    • Reflectance spectral characterization and mineralogy of acid sulphate soil in subsurface using hyperspectral data
      Shi, Xianzhong; Aspandiar, Mehrooz; Oldmeadow, D. (2014)
      Acid sulphate soil (ASS) is a kind of soil which is harmful to the environment. ASS is hard to efficiently assess efficiently in the subsurface, although it is detectable on the surface by remote sensing. This paper aims ...
    • Assessment of acid sulfate soil using hyperspectral data in South Yunderup, Western Australia
      Shi, X.; Aspandiar, Mehrooz; Lau, I. (2013)
      Acid sulphate soils (ASS) are harmful to the environment, but it is detectable because they contain secondary iron bearing minerals which have diagnostic spectral features in reflectance spectral ranges, and these iron ...
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