Evaluating volumetric glacier change methods using airborne laser scanning data

Auteur(s) et Affiliation(s)



Description :
In this study the AA. used high-resolution airborne laser scanning data from the Findelengletscher in the Swiss Alps to evaluate state-of-the-art volumetric glacier change methods. For the first time they have been able to simulate errors arising from different geodetic methods and spatial resolutions. The evaluation showed that, although the digital elevation models were perfectly co-registered, systematic and random method- and scale-dependent errors still occurred. These errors have an impact on the resulting volume changes at lower spatial resolutions and may lead to exponentially larger uncertainties. Volume changes from contour methods provided reasonably accurate results, while volumetric change assessments from central profile lines were especially prone to biases at any scale.


Type de document :
Article de périodique

Source :
Geografiska annaler. Series A. Physical geography, issn : 0435-3676, 2014, vol. 96, n°. 2, p. 135-145, nombre de pages : 11, Références bibliographiques : 26 ref.

Date :
2014

Editeur :
Pays édition : Suede, Stockholm, Svenska sällskapet för antropologi och geografi