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    Selection of test and reference areas for the Indian Deepsea Environment Experiment (INDEX)

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    Mar_Georesour_Geotechnol_18_177.pdf (812.7Kb)
    Date
    2000
    Author
    Sharma, R.
    Nath, B.N.
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    Abstract
    The Indian Deepsea Environment Experiment (INDEX) was conducted in the Central Indian Ocean Basin, to assess the effects of a simulated disturbance on the marine ecosystem and to collect data to predict the effects of large-scale mining. To select the Test and Reference areas for benthic disturbance, detailed studies were carried out for a better understanding of the topographic undulations and nodule distribution in five preselected areas of 10 x 10 nautical miles each. Flat topography was one of the important considerations for selection of the areas, because this would allow further dispersion of sediment plume and offer easier maneuverability of the benthic disturber. Relatively low nodule abundances were also preferred, to prevent clogging of the suction device used for resuspension of sediment. On the basis of morphological analysis and nodule distribution, two areas. Tl and Al, were selected as the best suited pair for the disturbance and monitoring experiment
    URI
    http://drs.nio.org/drs/handle/2264/1678
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