期刊名称:ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN:2194-9042
电子版ISSN:2194-9050
出版年度:2000
卷号:XXXIII Part B4 (/1-3)
页码:446-453
出版社:Copernicus Publications
摘要:This paper describes the three-dimensional reconstruction of the glaciation of two neighboring cirques from the Little Ice Age advance of 1850 up to the present (1997), and the visualization of its spatio -temporal changes during this time period by means of standard methods of cartography and modern computer animation. The glaciers (Goessnitzkees and Hornkees) are located in the Schober group (Hohe Tauern range, Central Alps, Austria). A total o f 9 different glacial stages were reconstructed. Computer-based analysis of the given time series was performed using a special digital database for glacier studies. Various numerical and graphical results show the course of deglaciation. Since the glaciers are largely covered by debris, a digital-photogrammetric procedure based on the Least Squares Matching (LSM) algorithm was developed in order to automate the generation of digital terrain models and the computation of three- dimensional flow vectors from the multi-year aerial photographs. This procedure facilitates the combination of aerial photographs of any scale and geo metry. Practical results prove the applicability of this method in glacier mapping. The computer animation ("glacier mo vie") of the glacier retreat has been implemented in the PC-based information system of the Austrian Hohe Tauern National Park for public access