UMRR Pool 06 Topobathy

Separate data for floodplain elevation and bathymetry were collected on the Upper Mississippi River System (UMRS) by the US Army Corps of Engineers (USACE), Upper Mississippi River Restoration (UMRR) program. While many information needs can be met by using these data separately, in many cases seamless elevation data across the river and its floodplain are needed. This seamless elevation surface was generated by merging lidar (i.e., floodplain elevation) and bathymetry data. Merging the data required special processing in the areas of transition between the two sources of data.

美国陆军工程兵团（US Army Corps of Engineers, USACE）下属密西西比河上游修复计划（Upper Mississippi River Restoration, UMRR），于密西西比河上游流域（Upper Mississippi River System, UMRS）采集了河漫滩高程与水深的独立测量数据集。尽管单独使用此类数据即可满足诸多信息需求，但在多数应用场景中，亟需覆盖河道及其河漫滩的无缝高程数据集。本数据集通过融合激光雷达（lidar，即河漫滩高程数据源）与水深测量数据，生成了上述无缝高程表面。在两种数据源的过渡区域，数据融合过程需进行特殊处理。