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| Titel |
Using a laser measurement system for monitoring morphological changes on the Strug rock fall, Slovenia |
| VerfasserIn |
M. Mikoš  , A. Vidmar, M. Brilly |
| 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 ; 5, no. 1 ; Nr. 5, no. 1 (2005-01-28), S.143-153 |
| Datensatznummer |
250002200
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| Publikation (Nr.) |
 copernicus.org/nhess-5-143-2005.pdf |
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| Zusammenfassung |
| A medium-ranged high performance handheld reflectorless laser measurement
system, was used for a morphological survey on the Strug rock fall in W
Slovenia in the period from August 2003 to August 2004. The purpose was to
evaluate its potential for monitoring ground surface changes in rock fall
source areas and to help evaluating morphological changes by measuring
distance from fixed points. In the area, 21 fixed geodetic points have been
established. Altogether, seven measurement sets with more than 5500 points
have been gathered in the rock fall area. Choosing a point cloud with a
density of less than 1 point per 10m2 on a very rough rock fall
surface failed to be a good solution. The changes on larger areas were shown
by displacements of selected significantly large-sized rock blocks with a
volume of several m3. Because only smaller changes were observed
between the single field series, the rock fall surface generally remained
unchanged. Local surface changes of the order of 1 m or more, were clearly
shown by measurements in the selected referenced cross sections. The usage
of these cross sections gave a possibility to evaluate volumetric changes on
the surface. The laser measurement system provided a good replacement for
the classical terrestrial geodetic survey equipment, especially when
performing remote monitoring of morphological changes in rock fall hazard
zones, however, the case is different when fixed points are to be measured
precisely. |
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