globalchange  > 气候变化与战略
DOI: 10.5194/tc-15-3699-2021
论文题名:
Analyzing glacier retreat and mass balances using aerial and UAV photogrammetry in the Ötztal Alps, Austria
作者: Geissler J.; Mayer C.; Jubanski J.; Münzer U.; Siegert F.
刊名: Cryosphere
ISSN: 19940416
出版年: 2021
卷: 15, 期:8
起始页码: 3699
结束页码: 3717
语种: 英语
英文摘要: We use high-resolution aerial photogrammetry to investigate glacier retreat in great spatial and temporal detail in the Ötztal Alps, a heavily glacierized area in Austria. Long-term in situ glaciological observations are available for this region as well as a multitemporal time series of digital aerial images with a spatial resolution of 0.2g m acquired over a period of 9 years. Digital surface models (DSMs) are generated for the years 2009, 2015, and 2018. Using these, glacier retreat, extent, and surface elevation changes of all 23 glaciers in the region, including the Vernagtferner, are analyzed. Due to different acquisition dates of the large-scale photogrammetric surveys and the glaciological data, a correction is successfully applied using a designated unmanned aerial vehicle (UAV) survey across a major part of the Vernagtferner. The correction allows a comparison of the mass balances from geodetic and glaciological techniques - both quantitatively and spatially. The results show a clear increase in glacier mass loss for all glaciers in the region, including the Vernagtferner, over the last decade. Local deviations and processes, such as the influence of debris cover, crevasses, and ice dynamics on the mass balance of the Vernagtferner, are quantified. Since those local processes are not captured with the glaciological method, they underline the benefits of complementary geodetic surveying. The availability of high-resolution multi-temporal digital aerial imagery for most of the glaciers in the Alps provides opportunities for a more comprehensive and detailed analysis of climate-change-induced glacier retreat and mass loss. © Copyright:
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164688
Appears in Collections:气候变化与战略

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作者单位: 3D RealityMaps GmbH, Dingolfinger Str. 9, Munich, 81673, Germany; Bavarian Academy of Science, Geodesy and Glaciology, Alfons-Goppel Str. 11, Munich, 80539, Germany; Department of Earth and Environmental Sciences, Section Geology (Remote Sensing), Ludwig-Maximilians-Universität München, Luisenstr. 37, Munich, 80333, Germany; Faculty of Environment and Natural Resources, Albert-Ludwigs-Universität Freiburg, Friedrichstr. 39, Freiburg, 79098, Germany; Faculty of Biology, GeoBio Center, Ludwig-Maximilians-Universität München, Richard-Wagner-Str. 10, Munich, 80333, Germany

Recommended Citation:
Geissler J.,Mayer C.,Jubanski J.,et al. Analyzing glacier retreat and mass balances using aerial and UAV photogrammetry in the Ötztal Alps, Austria[J]. Cryosphere,2021-01-01,15(8)
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