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首页> 美国政府科技报告 >Multi-Scale (cm to km) Hydrodynamic and Morphologic Interactions in Tidal Inlets, Dynamics of Sandwaves with Combined Wave - Current Forcing and Mine Burial Processes, and Instrumentation for Measuring Nearshore Morphologic Change and Hydrodynamic Forcing
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Multi-Scale (cm to km) Hydrodynamic and Morphologic Interactions in Tidal Inlets, Dynamics of Sandwaves with Combined Wave - Current Forcing and Mine Burial Processes, and Instrumentation for Measuring Nearshore Morphologic Change and Hydrodynamic Forcing

机译：潮汐入口的多尺度（cm至km）水动力学和形态学相互作用，组合波浪强迫和矿井埋藏过程的砂波动力学，以及测量近岸形态变化和水动力强迫的仪器

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Our long terms goals are to understand sediment transport processes, the relevant physical forcing processes and the resulting morphologic evolution of river mouths and tidal inlets and shoals. Specific goals include understanding bedform characteristics (ripple to sandwave and sandbar scale) in relation to wave- and current-forced mean and turbulent flow. Objectives: 1. Quantify morphological change associated with storms and tidal forcing, and quantify the physical mechanisms causing the change (i.e., the specific wave- current-bathymetry interactions leading to divergence of sediment transport). 2. Measure the currents, sediment-transport processes and bedform evolution in the bottom boundary layer in the energetic ebb-tidal shoals, where nonlinear interactions between waves and tidal currents are critically important to the sediment transport and the morphological response to changing forcing conditions. 3. Develop instrumentation to make essential measurements for objectives 1 and 2. This includes a surface running REMUS-100 with a carrier phase GPS antenna that will remain exposed, and a multi-beam system for bathymetric surveys. Our Dopplers profilers are also in the process of being upgraded to bistatic convergent beam sampling for better resolution of near bed turbulence.

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