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Evaluation and combination of techniques used to determine the nautical bottom: a call for rheology based instruments
Claeys, S. (2006). Evaluation and combination of techniques used to determine the nautical bottom: a call for rheology based instruments, in: Evolutions in hydrography, 6th - 9th November 2006, Provincial House Antwerp, Belgium: Proceedings of the 15th International Congress of the International Federation of Hydrographic Societies. Special Publication (Hydrographic Society), 55: pp. 141-144
In: (2006). Evolutions in hydrography, 6th - 9th November 2006, Provincial House Antwerp, Belgium: Proceedings of the 15th International Congress of the International Federation of Hydrographic Societies. Special Publication (Hydrographic Society), 55. International Federation of Hydrographic Society: London. 234 + cd-rom pp., more
In: Special Publication (Hydrographic Society). Hydrographic Society: London. ISSN 0309-8303, more
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Document type: Conference paper
Keywords
    Aquatic sciences > Marine sciences > Earth sciences > Oceanography > Physical oceanography > Hydrography
    Dimensions > Depth > Water depth
    Equipment > Measuring devices
    Physics > Mechanics > Rheology
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Abstract
    The rheology properties of the underwater sediment will influence the possibility of Navigation through it (or just above it). The rheology of the fluid/partially consolidated Mud is a very complex issue. Most of the techniques to determine the nautical bottom Are based on density information because of the relatively easy way of measuring. The problem is that the Relation density - rheology can not be used as such. More correct and direct ways to relate the rheological Parameters to the sludge are: in-situ sampling (of disturbed and undisturbed samples) combined with Performing laboratory rotoviscosimeter tests on these samples or direct in-situ rheological measurements With body-profiling rotoviscosimeter. Relating this information to the structural information from the Acoustical profiling methods is a step forward, but because of its complexity, it is seldom used. An accurate And easy to use online rheology properties measuring instrument (measuring shear-strength (rigidity and Viscosity)) is still to be designed.
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