Spatial variability of surface sediment basis on geostatistical analysis in the littoral area of Yellow River delta, China

Lin Zhang, Renxizi Ren, Shenliang Chen (Lead / Corresponding author), Ping Dong

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    Abstract

    A total of 155 surface sediment samples were collected from the littoral area of Yellow River Delta in 2007, and analyzed for texture and composition. Using geostatistic analysis, it is founded that there exist notable spatial autocorrelation of the clay and sand fractions in these samples with the autocorrelation scale being 44 km and 39 km, respectively. In comparison, the spatial autocorrelation of silt fraction is moderate, with the autocorrelation scale of 27 km. Analysis also reveals that the anisotropy of the sediment components is clear at the scale 60 km and the distribution of the depocenters of sand fraction (i.e. content up to 40%) is very heterogeneous. Boundaries between these sedimentary units and their substratum are very sharp.
    Original languageEnglish
    Pages (from-to)463-472
    Number of pages10
    JournalIndian Journal of Geo-Marine Sciences
    Volume43
    Issue number4
    Publication statusPublished - Apr 2014

    Keywords

    • Geostatistical method
    • Semivariogram
    • Sand fraction
    • Characteristic distance
    • Yellow River Delta

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