کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4686502 1635551 2008 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Terrain maps displaying hill-shading with curvature
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Terrain maps displaying hill-shading with curvature
چکیده انگلیسی
This study illustrates how second derivative maps, in conjunction with hill-shading, can cartographically enhance topographic detail. A simple conic model indicates that image-tone edges where slope or aspect varies by less than 0.5° are visible on curvature maps. Hill-shaded images combined with curvature enhance the continuity of naturally occurring tonal edges, especially in strongly illuminated areas. Variations in planimetric and profile curvature seem to be especially effective at highlighting convergent and divergent drainages and variations in erosion rate between or within sedimentary units, respectively. Shading curvature with consideration given to illumination models can add detail to hill-shaded terrain maps in a manner similar to cognitive models employed by map viewers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geomorphology - Volume 102, Issues 3–4, 15 December 2008, Pages 567-577
نویسندگان
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