UMRR Pool 19 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（USACE）密西西比河上游修复（UMRR）项目组在密西西比河上游水系（Upper Mississippi River System, UMRS）采集了独立的漫滩高程与水深地形测量（bathymetry）数据。尽管单独使用此类数据可满足多数信息需求，但在诸多应用场景中，亟需获取横跨河道及其漫滩的无缝高程数据集。该无缝高程表面通过融合激光雷达（lidar，即漫滩高程数据）与水深地形测量数据生成。在两类数据源的过渡区域，数据融合工作需开展特殊处理。