Morphometric terrain-classification systems developed in recent years have made comparatively little use of air-photo interpretation methods in providing their basic data. This is surprising in view of the very detailed landscape model which is provided by stereoscopic examination of air photos. In this study two morphometric classification systems were examined: the quanititative terrain data system and the characteristic plan-profile system, and modifications were made in their methodology so that the terrain parameters required by the systems could be obtained using air-photo interpretation methods. The applicability of the two systems, as modified, was tested in the Laurentian area of eastern Canada with reference to sample areas in three different rock types. Measurements of terrain attributes were obtained from panchromatic air photos at a scale of 1:34,400, and it was demonstrated that, in their modified form, the two systems provided a detailed, objective method of terrain analysis, which was sufficiently sensitive to respond to variations in surface texture resulting from structural and lithological differences. In their modified form the two terrain-classification systems are considerably more versatile since they can be applied where topographic map coverage is lacking or inadequate. /Author/TRRL/

  • Corporate Authors:


    Radarweg 29
    Amsterdam,   Netherlands  1043 NX
  • Authors:
    • Parry, J T
    • Beswick, J A
  • Publication Date: 1973

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 153-186
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00097811
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 10 1975 12:00AM