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| Voineson, Guillaume. |
| Beyond the simple measurement of the altimetry, the recording of the whole signal of the echoes measured by the autonomous sounder S-ALTUS may lead to extra information about the superficial sediment. This study wants to assess the potency of the SALTUS to identify the nature of the bottom sediment and also to detect a superficial layer using the shape of the signal. An accurate measurement of the technical attributes of the S-ALTUS was carried out in an acoustic pool. Then, few tests were made on different thickness of a first sediment layer set on an other sediment base (fine sand on coarse sand, soft mud on sand, soft mud on hard mud, sand on hard mud, etc..). A cross-correlation between the emitted signal and the backscattered echo sometimes allows... |
| Tipo: Text |
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| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/00067/17818/15346.pdf |
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| Bassoullet, Philippe; Verney, Romaric; Kervella, Youen; Kervella, Stephane; Jestin, Herve; Voineson, Guillaume. |
| Quantitative evaluation of erosion/deposition events of surficial sediments is crucial to understand the processes and establish sedimentary budgets in coastal areas The ALTUS system was designed for more than a decade, to meet this objective The possibilities offered by this altimeter (short-term or several months measurements) are particularly fitted for validation of sedimentary transport numerical models The recent integration of a large capacity memory card has allowed to optimize the system Indeed it is well established that wave activity is one of the key parameters for the erosion and hence govern sediment transport in intertidal/shallow water areas The ALTUS system in addition to bottom level variation recordings allows access to wave... |
| Tipo: Text |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00019/13036/10170.pdf |
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