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    Internal constitution of manganese nodules from the Central Indian Ocean basin

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    Indian_J_Mar_Sci_20_17.pdf (228.5Kb)
    Date
    1991
    Author
    Ghosh, A.K.
    Mukhopadhyay, R.
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    Abstract
    Morphological, chemical, physical and acoustic properties of Mn-nodules in the the Indian Ocean are inter-linked and depend much on local and regional oceanic environments. These nodules are anisotropic and sound propagation is faster parallel to their elongation. Denser nodules show low attenuation. Density and P-wave velocity in nodules increase significantly on saturation with water. Nodule density is related directly to nodule size, P-wave velocity and Mn/Fe ratio; and inversely to water content, attenuation and Co concentration. Nodules with rough surface from siliceous clay region record highest density, P-wave velocity and Mn/Fe ratio.
    URI
    http://drs.nio.org/drs/handle/2264/3270
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