Very-high resolution digital terrain analysis for eco-pedological and hydrological purposes

Description

Topography is among the most important components of the landscape. It plays an important role in re-distribution of matter and flows. State-of-the-Art remote sensing and GIS (geographic information system) technologies allow the fast and cost-efficient topographic quantitative analysis at very-high (sub-meter) resolution. This includes unmanned aerial vehicle (UAV) survey data coupled with high-accuracy ground surveys using differential global navigation satellite system (GNSS).

Main deliverables

  • Raw aerial survey images taken by UAV
  • Very-high resolution digital surface models (DSM) and digital terrain models (DTM) resulted from the stereo-photogrammetric processing of the raw aerial survey data enhanced using high-accuracy ground control points
  • High-accuracy orthorectified aerial images (orthophoto-maps) of the area of interests
  • Hydrological analysis of DTM (flow directions, plain- and profile curvature, flow accumulations, basin/catchment delineation).

Application

  • High-resolution digital soil mapping: data up-scaling
  • Monitoring of vegetation productivity and dynamics at the local scale
  • Monitoring of natural hazards (landslides, mud flows, ground displacements)