Acoustic Doppler current profiler velocity data collected during 2015 and 2016 in the Calumet Harbor, Illinois

Water velocities were measured in the Calumet Harbor for 5 dates in 2015 and 2016 using Teledyne Rio Grande 600 kHz acoustic Doppler current profilers (ADCP). The data were georeferenced with differential GPS receivers with submeter accuracy. These velocity data were collected in cooperation with the US Army Corps of Engineers-Chicago District. ADCP data were collected on the following dates and for the following purposes: May 12, 2015: Water velocities in the Calumet Harbor and Calumet River. Unsteady discharges in the Calumet River mouth. September 9, 2015: Water velocities in the Calumet Harbor and Calumet River mouth. October 5, 2015: Water velocities in the Calumet Harbor and Calumet River mouth. March 25, 2016: Water velocities in the Calumet Harbor and Calumet River mouth. May 6, 2016: Water velocities in the Calumet Harbor and Calumet River mouth. Datasets were processed using the Velocity Mapping Toolbox (Parsons and other, 2013) to derived temporally- and spatially-average water velocity values for each survey data. Refer to each dataset for specific details. 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.3367

本数据集于2015至2016年间，在5个观测日期使用Teledyne Rio Grande 600 kHz声学多普勒流速剖面仪（ADCP，acoustic Doppler current profilers）于卡卢梅特港（Calumet Harbor）测量水体流速。数据通过差分GPS接收机完成地理配准，定位精度达亚米级。本次流速数据采集工作与美国陆军工程兵团芝加哥分区（US Army Corps of Engineers-Chicago District）协作完成。

ADCP数据的采集日期及对应用途如下：
2015年5月12日：测定卡卢梅特港与卡卢梅特河（Calumet River）的水体流速，同步监测卡卢梅特河河口的非恒定流量。
2015年9月9日：测定卡卢梅特港与卡卢梅特河河口的水体流速。
2015年10月5日：测定卡卢梅特港与卡卢梅特河河口的水体流速。
2016年3月25日：测定卡卢梅特港与卡卢梅特河河口的水体流速。
2016年5月6日：测定卡卢梅特港与卡卢梅特河河口的水体流速。

本数据集采用流速绘图工具箱（Velocity Mapping Toolbox，Parsons等，2013）进行处理，以推导各次勘测数据的时间与空间平均水体流速值。具体细节请参阅各对应数据集。

参考文献：
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. 及 Riley, J. D. (2013)，《流速绘图工具箱（VMT）：移动载体ADCP测量数据的处理与可视化套件》，《Earth Surf. Process. Landforms》，38卷：1244–1260。DOI: 10.1002/esp.3367