St. Clair River 2012 Hydrographic Survey

Fort Gratiot to Algonac approximately 1 meter spacing collected with R2Sonic in the 400kHz range velocity profiler GPS/POS MV positioning pitch and roll compensation Survey meets requirements of EM1110-1003 30 November 2013 X, Y, Z x-coordinate Michigan State Plane South Meters y-coordinate Michigan State Plane South Meters z-bottom elevation of river, meters, relative to IGLD85本数据集采集自格雷蒂奥特堡（Fort Gratiot）至阿尔戈纳克（Algonac）区域，采样间距约1米。数据采用工作于400kHz频段的R2Sonic测速剖面仪采集，搭载GPS/POS MV定位系统并完成俯仰与横摇补偿。本测量作业符合2013年11月30日发布的EM1110-1003标准要求。数据集包含X、Y、Z坐标信息：X、Y坐标采用密歇根州平面坐标系南分区（Michigan State Plane South），单位为米；Z坐标为河床底部高程，单位为米，基准面为IGLD85（International Great Lakes Datum 1985）。