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Comparison of polynomial models for land surface curvature calculation / J. Schmidt in International journal of geographical information science IJGIS, vol 17 n° 8 (december 2003)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 17 n° 8 (december 2003) . - pp 797 - 814 Titre : Comparison of polynomial models for land surface curvature calculation Type de document : Article/Communication Auteurs : J. Schmidt, Auteur ; I.S. Evans, Auteur ; J. Brinkmann, Auteur Année de publication : 2003 Article en page(s) : pp 797 - 814 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] courbure [Termes IGN] figuré du terrain [Termes IGN] géomorphologie [Termes IGN] modèle numérique de terrain [Termes IGN] pesanteur terrestre Résumé : (Auteur) Curvature is a fundamental surface property whose application, for example in geomorphology and hydrology, has long been recognised. Its measurement from Digital Terrain Models (DTMs) has received less attention than that of slope, and there is even disagreement about which definitions of curvature are most applicable. Here these problems are related to semantic problems in the definition of the land surface, and three distinct algorithms for the three main gravity-related components of curvature are compared for both artificial and real surfaces. Quadratic-based algorithms are shown to give more stable results. Higher-order local surfaces (e.g. partial quartic) can fit more complex landform features, but are reliable only for very accurate data. Numéro de notice : A2003-300 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810310001596058 En ligne : https://doi.org/10.1080/13658810310001596058 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22596 [article]

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