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| Titel |
Quantifying discontinuity orientation and persistence on high mountain rock slopes and large landslides using terrestrial remote sensing techniques |
| VerfasserIn |
M. Sturzenegger, D. Stead |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 9, no. 2 ; Nr. 9, no. 2 (2009-03-03), S.267-287 |
| Datensatznummer |
250006699
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| Publikation (Nr.) |
 copernicus.org/nhess-9-267-2009.pdf |
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| Zusammenfassung |
| This paper describes experience gained in the application of terrestrial
digital photogrammetry and terrestrial laser scanning for the
characterization of the structure of high mountain rock slopes and large
landslides. A methodology allowing the creation and registration of 3-D
models with limited access to high mountain rock slopes is developed and its
accuracy verified. The importance of occlusion, ground resolution, scale and
reflectivity are discussed. Special emphasis is given to the concept of
observation scale and resulting scale bias and its influence on
discontinuity characterization. The step-path geometry of persistent
composite surfaces and its role in remote sensing measurements are
described. An example of combined terrestrial digital photogrammetry and
terrestrial laser scanning applied in the generation of a 3-D model of the
South Peak of Turtle Mountain, the location of the Frank Slide, is
presented. The advantages gained from the combined use of these techniques
and the potential offered through long-range terrestrial digital
photogrammetry, using high focal length lenses up to 400 mm is illustrated.
Special emphasis is given to the potential of this specific technique, which
has to the authors knowledge rarely been documented in the geotechnical
literature. |
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