Bathymetry, Point

Data has been collected primarily using a depth measurement device, such as an echo-sounder, in combination with a GPS for horizontal positioning. Other survey methods, such as bathymetric lidar may also have been used. The survey method used in each body of water is shown in the Bathymetry Index. Additional Documentation Bathymetry User Guide (Word) Status On going: data is being continually updated Maintenance and Update Frequency As needed: data is updated as deemed necessary Contact Ontario Ministry of Natural Resources - GeospatialOntario, [e-mail]本数据集主要通过回声测深仪（echo-sounder）等水深测量设备，结合全球定位系统（GPS）完成水平定位以采集数据；此外亦可采用测深激光雷达（bathymetric lidar）等其他测量手段开展数据采集工作。 各水域所采用的测量方法已在《水深索引》（Bathymetry Index）中列明。 附加文档：《测深用户指南》（Bathymetry User Guide，Word格式） 当前状态：项目处于进行阶段，数据将持续更新完善。 维护与更新频率：按需更新，即根据实际工作需要对数据进行必要的更新操作。 联系方式：安大略省自然资源部地理空间安大略（GeospatialOntario），电子邮箱：[e-mail]