Spatial distribution of layer-averaged velocity measured in the Calumet Harbor, Illinois (October 5, 2015)

Acoustic Doppler current profiler (ADCP) data were collected along a prescribed navigated course throughout Calumet Harbor on October 5, 2015 to determine the spatial distribution of layer-averaged velocities. The data were layer-averaged in 2-foot increments of depth from the bed to the water surface, and temporally-averaged over a 30-second window to reduce noise. Data were processed using the Velocity Mapping Toolbox (Parsons and other, 2013). Any data assigned a value of "-9999" are invalid or missing and should not be used for analysis. Parsons, D. R., Jackson, P. R., Czuba, J. A., Engel, F. L., Rhoads, B. L., Oberg, K. A., Best, J. L., Mueller, D. S., Johnson, K. K. and Riley, J. D. (2013), Velocity Mapping Toolbox (VMT): a processing and visualization suite for moving-vessel ADCP measurements. Earth Surf. Process. Landforms, 38: 1244–1260. doi: 10.1002/esp.33672015年10月5日，研究人员沿预设航行航线在卡卢梅特港（Calumet Harbor）全域采集声学多普勒流速剖面仪（Acoustic Doppler Current Profiler，ADCP）数据，以探明层平均流速的空间分布特征。数据以从河床至水面的2英尺深度间隔开展层平均处理，并通过30秒时长的时间窗口实施时间平均以降低噪声。数据采用流速绘图工具箱（Velocity Mapping Toolbox，Parsons等，2013）进行处理。所有赋值为"-9999"的数据均为无效或缺失数据，不得用于分析。Parsons, D. R., Jackson, P. R., Czuba, J. A., Engel, F. L., Rhoads, B. L., Oberg, K. A., Best, J. L., Mueller, D. S., Johnson, K. K. and Riley, J. D. (2013), 流速绘图工具箱（VMT）：移动载体ADCP测量的处理与可视化套件. Earth Surf. Process. Landforms, 38: 1244–1260. doi: 10.1002/esp.3367