Back / Ocean waves / 08.10.2014

Real-time AWAC wave data used at Duck Field Research Facility

The US Army Corps of Engineers posted real-time data from one of four AWAC current profilers deployed in a cross-shelf array at the Duck Field Research Facility, North Carolina.

A significant challenge to numerical wave modeling is capturing the dynamics of wave transformation in coastal waters. To collect essential data sets and evaluate numerical wave model performance, the US Army Corps of Engineers developed a real-time cross-shore wave and current array across the energetic shelf environment in Duck. 

95 km array

The array consists of four AWAC wave and current profilers at 5–11 m depths, a pier-based meteorological station at 8 m depth, and two directional Waverider buoys at 17 m and 26 m depths. National Data Buoy Center (NDBC) station 44014 adds winds and directional waves at 48 m depth. With these sensors, the array spans 95 km and captures all phases of wave transformation from the outer continental shelf to within the surf zone. 

contour2d_awac03.png#asset:7927

Contour plot of AWAC wave energy as function of frequency and direction (from XWaves software).

specgraphplot_awac03.png#asset:7928

AWAC wave height and spectrograph plot from October 10–15, 2009 (from XWaves software).

waveVector_awac03.png#asset:7929

Wave vector plot showing the wave direction and significant height of individual wave systems as they evolve through time (from XWaves software).



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