| Description |
To assess cross-shore sediment transport prediction techniques in coastal models for a wave-dominated sandy coast, the U.S. Geological Survey Woods Hole Coastal and Marine Science Center collected data to measure wave-induced and mean current water velocities near the seabed and the response of the seabed to these forces. A four-legged bottom landing frame (quadpod) containing oceanographic instruments was deployed on the seafloor in the nearshore zone of Cape Cod Bay off Sandy Neck Beach, Barnstable, MA on March 10, 2021 and recovered April 7, 2021, to coincide with a climatologically active period for storms. The quadpod was mounted with upward- and downward-looking 5-beam acoustic doppler current profilers (Nortek Signatures) to measure velocity throughout the water column and calculate wave statistics, two acoustic doppler velocimeters (Nortek Vectors) to measure water velocity near the seabed, a conductivity and temperature recorder (SeaBird Microcat) to measure temperature and salinity, a wave and tide pressure logger (SeaBird Seagauge), a digital rotary sonar (Imagenex) to image the seabed, and an acoustic backscatter sensor (Aquatec Aquascat) to profile acoustic backscatter near the seabed. Time-series data was processed using USGS software (stglib), producing network Common Data Format (netCDF) files, compliant to Climate and Forecast (CF) data convention. Additionally, sediment samples were collected for grain-size analysis. These data will be used in a coupled ocean-atmosphere-wave-sediment transport model at different grid scales to encompass storm events, regional waves and currents, and fine-resolution wave-breaking to increase our understanding of the drivers that control sediment movement in Cape Cod Bay and help coastal zone managers to better address shoreline change issues. [More]
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