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Résultats de la recherche (15 résultats)

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  • Analysis of planimetric accuracy of airborne laser scanning surveys
  • This study explores the surface variability of alluvial fans from digital elevations model (DEM) derivatives generated from 1-m planimetric resolution airborne laser swath mapping data. Channel and interfluve dimensions of debris flow (DF) fans
  • and fans generated from predominantly fluvial flows and some older debris flows (mixed flow, MF) are extracted with the aid of a planimetric curvature classification. Significant differences are identified between the fan surface topography of DF and MF
  • Planimetric map of satellite images.
  • is discussed with respect to accuracy and repeatability. The methods covered include sedimentological evidence, botanical evidence, historical sources, planimetric resurvey, repeated cross-profiling, erosion pins and terrestrial photogrammetry. Prospects
  • Thresholds for channel change were investigated on two proglacial outwash fans, one silty, the other gravelly, over different temporal and spatial scales. Model outputs were defined in terms of planimetric change, braiding intensity, fan incision
  • In this paper, the AA. investigate the planimetric properties of the southwestern Kalahari linear dunefield. This study was carried out as part of a major project which is examining the surface processes, dynamics, morphological variability
  • controlling their development. The canonical solution identifies three significant patterns of association between basin planimetric properties and their causative and deterministic factors. The texture of dissection is strongly associated with soil
  • Eight planimetric maps were obtained using the method of Radial graphic Triangulation without changes in the axial points aiming to determine the variation of Scale in function of the increase in number of photos and the relief. The results schowed
  • Assessment of the planimetric morphology of barchan dunes
  • . This research uses oblique photographs taken daily, automatically. Digital immage-processing techniques created planimetric models of sandbar area from the photos for the period March 1993 - May 1995. This technique allowed daily tracking of sandbar areas
  • parameters it depends. A series of 14 experimental runs were performed in a laboratory physical model with uniform sand, varying the discharge and the longitudinal slope. Planimetric and altimetric configurations were monitored in order to assess
  • paysage des oblasts septentionaux et centraux du Centre de l'URSS, étudiée à l'aide du planimètre électronique. Les données cartométriques ont prouvé l'existence d'une limite nette entre les systèmes de paysage boréal et subarctique et ceux de paysage
  • channels of the Rhone Delta. By using methods such as sedimentological evidence, historical sources, planimetric resurvey, repeated longitudinal and cross-profiling and hydraulic data, the geomorphological and hydraulic responses to channel changes
  • A data base of documented sediment-transporting events in torrent catchments of Austria, Switzerland and northern Italy has been compiled, using common classification techniques. With this data the AA. test an empirical approach between planimetric
  • The aim of this study was to relate gully volume to planimetric parameters of irregularly shaped gullies developed in the sandstone substratum of the Fortuna geological formation. The AA. established relationships between gully volume and its