Aleš Marjetič (Author), Jan Magyar (Author), Tomaž Ambrožič (Author), Polona Pavlovčič Prešeren (Author)

Abstract

Investigating the thickness of ice walls is a formidable pursuit, especially considering the dynamic nature of the environment and the rapid changes in ice conditions. With the use of terrestrial laser scanning (TLS), further compounded by the influence of unfrozen droplets on TLS measurements, this challenge is heightened, because the presence of droplets can adversely affect the accuracy and reliability of measurements. The study aimed to procure 3D models of the artificial climbing wall in Mlačca Gorge, Slovenia, to help climbers in charting diverse climbing routes prior to ascent. Concurrently, the research endeavor sought to deepen our understanding of TLS application in demanding icy terrain. This study unveils the outcomes of successive TLS measurements conducted during the winter of 2021, marked by the most significant thickening of the ice wall in the previous four years. Notably, the terrestrial surveys unveiled the pivotal influence of the laser scanner’s wavelength on beam reflectivity, in addition to the consequential roles played by the angle of incidence of the laser beam on the ice wall and atmospheric moisture concentration in the gorge.

Keywords

terrestrial laser scanning;georeferencing;ice climbing wall;thickness of ice;reflectance;angle of incidence;safety;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
UDC: 528(497.4)
COBISS: 222163459 Link will open in a new window
ISSN: 1938-4246
Views: 28
Downloads: 26
Average score: 0 (0 votes)
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Other data

Secondary language: Slovenian
Secondary abstract: Preučevanje debeline ledenih sten je zahtevno opravilo, zlasti zaradi dinamične narave okolja in hitrih sprememb v stanju ledu. Uporaba terestričnega laserskega skeniranja (TLS) dodatno oteži ta izziv, saj lahko prisotnost nezamrznjenih kapljic negativno vpliva na natančnost in zanesljivost meritev. Cilj študije je bil pridobiti 3D modele umetne plezalne stene v soteski Mlačca v Sloveniji, da bi plezalcem omogočili načrtovanje različnih plezalnih poti pred vzponom. Hkrati je raziskovalno delo stremelo k poglobljenemu razumevanju uporabe TLS v zahtevnih ledenih terenih. Študija predstavlja rezultate zaporednih TLS meritev, izvedenih med zimo leta 2021, ko je bila debelina ledene stene največja v zadnjih štirih letih. Terestrične meritve so razkrile ključen vpliv valovne dolžine laserskega skenerja na odbojnost žarka, poleg tega pa tudi pomembne vloge, ki jih igrajo vpadni kot laserskega žarka na ledeno površino ter koncentracija vlage v zraku v soteski.
Secondary keywords: terestrično lasersko skeniranje;georeferenciranje;ledna plezalna stena;debelina ledu;odbojnost;vpadni kot;varnost;
Type (COBISS): Article
Pages: str. 1-14
Volume: ǂVol. ǂ57
Issue: ǂiss. ǂ1, [article no.] 2437186
Chronology: 2025
DOI: 10.1080/15230430.2024.2437186
ID: 25691208