Multibeam bathymetry and sediment depth data at select locations on the Des Plaines River near Joliet, Illinois, February 13–14, 2017

These data are high-resolution bathymetry (river bottom elevation) in XYZ format, generated from the February 13, 2017, topographic and hydrographic survey of the Des Plaines River in an area centered approximately 2.2 miles downstream of Brandon Road Lock and Dam at Joliet, Illinois. Hydrographic data were collected using a multibeam echo-sounder (MBES) with integrated inertial navigation solution (INS) mounted on a marine survey vessel. Data were collected as the vessel traversed the river along survey lines distributed throughout the area. Data collection software integrated and stored the depth data from the multibeam sonar and the horizontal and vertical position and attitude data of the vessel from the INS in real time. Data processing required computer software to extract bathymetry data from the raw data files and to summarize and map the information.

本数据集为格式为XYZ的高分辨率水深地形测量数据（bathymetry，对应河底高程），源自2017年2月13日对德斯普兰斯河（Des Plaines River）开展的地形与水文测量，测量区域以伊利诺伊州乔利埃特市布兰登路船闸大坝下游约2.2英里处为核心。本次水文数据采集依托搭载于海洋测量船的多波束测深仪（multibeam echo-sounder，MBES）与集成惯性导航系统（inertial navigation solution，INS）完成。测量船沿覆盖整个研究区域的测线航行以采集数据，数据采集软件可实时集成并存储多波束声呐获取的水深数据，以及惯性导航系统记录的测量船水平、垂直位置与姿态信息。后续数据处理需借助计算机软件从原始数据文件中提取水深地形数据，并对该信息进行汇总与成图。