Autonomous Underwater Vehicle Water-Quality, Bathymetric, and Sonar Measurements in the Black River near Elyria, Ohio, 2021

These datasets were collected in support of the U.S. Environmental Protection Agency Region 5 at the Chemical Recovery Site in Elyria, Ohio, within the East Branch Black River on March 22, 2021. Water-quality and bathymetric data were measured and logged at 1-second intervals (AUV_CRS_Combined_032221.csv). Water-quality data collected during eight different missions were measured with a YSI EXO1 sonde mounted in the nose cone of the IVER3 EcoMapper Autonomous Underwater Vehicle (AUV) and include specific conductivity (in microsiemens per centimeter at 25 degrees Celsius), water temperature (degrees Celsius), dissolved oxygen (milligrams per liter), and pH (standard units). Bathymetric data were measured using an on-board depth sounder and pressure transducer. Sound navigation and ranging (sonar) imaging was conducted using a StarFish 452F side-scan sonar unit at 450 kilohertz at a range of 30 meters and are provided within this release as GeoTIFFs.

本数据集为支持美国环境保护局第五区域（U.S. Environmental Protection Agency Region 5）的相关工作而采集，采集地点位于俄亥俄州伊利里亚市黑河东支流的化学品回收场址，采集时间为2021年3月22日。水质与水深地形数据以1秒间隔进行测量并记录，相关整合数据存储于AUV_CRS_Combined_032221.csv文件中。8次不同任务中采集的水质数据，由搭载于IVER3 EcoMapper型自主水下航行器（Autonomous Underwater Vehicle，AUV）鼻锥内的YSI EXO1型水文探头完成测量，检测指标包括25℃下的比电导率（单位：微西门子/厘米）、水温（单位：摄氏度）、溶解氧（单位：毫克/升）以及pH值（标准单位）。水深地形数据通过搭载式测深仪与压力传感器获取。声呐（Sound Navigation and Ranging）成像采用StarFish 452F型侧扫声呐设备完成，工作频率为450千赫，探测量程为30米，本次发布的声呐成像数据以GeoTIFF格式提供。