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| Titel |
Merging Terrestrial Laser Scanning Technology with Photogrammetric and Total Station Data for the Determination of Avalanche Modeling Parameters |
| VerfasserIn |
Alexander Prokop, Peter Schön, Florian Singer, Gaëtan Pulfer, Mohamed Naaim, Emmanuel Thibert |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250111579
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| Publikation (Nr.) |
 EGU/EGU2015-11713.pdf |
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| Zusammenfassung |
| Dynamic avalanche modeling requires as input the volumes and areas of the snow released,
entrained and deposited, as well as the fracture heights. Determining these parameters requires high-resolution spatial snow surface data from before and after the avalanche. In snow and avalanche
research, terrestrial laser scanners are used increasingly to efficiently and accurately map snow
surfaces and depths over an area of several km². In practice however, several problems may occur,
which must be recognized and accounted for during post-processing and interpretation, especially
under the circumstances of surveying an artificially triggered avalanche at a test site, where time pressure
due to operational time constraints may also cause less than ideal circumstances and
surveying setups. Thus, we combine terrestrial laser scanning with photogrammetry, total station
measurements and field snow observations to document and accurately survey an artificially triggered
avalanche at the Col du Lautaret test site (2058 m) in the French Alps. The ability of TLS to determine
avalanche modeling input parameters efficiently and accurately is shown, and we demonstrate how,
merging TLS with the other methods facilitates and improves data post-processing and interpretation.
Finally, we present for this avalanche the data required for the parameterization and validation of
dynamic avalanche models and discuss using newest data, how the new laser scanning device generation (e.g Riegl VZ6000) further improves such surveying campaigns. |
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