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  • The use of orthophotographs and orthophoto maps in high mountain cartography in Proceedings of a Symposium on High Mountain Cartography.
  • A satellite orthophoto map of part of the Eastern Alps is produced to explain the use of orthophotographs in mapping topographic features. - (DWG)
  • The aim of this research is to establish a methodology for the systematic study of saline wetlands in southern Monegros. A wetlands inventory was produced and updated using satellite data, field observations, and orthophotographs, together
  • where a continuous area of cropland has been treated with SWC structures since at least 1956. Their extent is evaluated from orthophotographs in 1956 and their extent as well as their condition from a field survey in 2005. Furthermore, the thresholds