Marine-terminating outlet glaciers experience a combination of seasonal and climate-driven change. Nearby glaciers exhibit very different retreat and advance behavior despite being situated in similar climatic conditions. This highlights the demand to essentially improve our understanding of the driving mechanisms and to provide a basis for parameterizations of oceanic forcing that are fed into mass-loss projections. Temporal changes of glacial flow velocities are presumably linked to the evolution of the subglacial hydrological system. Depending on the type of subglacial system, the temporal acceleration of the glacier is represented by different characteristics. While this is typically investigated only along a central flow line, the spatial distribution contains more information on the cause of the acceleration. In a similar way, the spatial pattern of acceleration due to changes at the calving front is likely driven by upstream propagation of changes in stresses. Hence, understanding the mechanisms in detail requires an analysis of different physical variables in high temporal and spatial resolution and combination with ice modelling. With the new generation of satellites the era of big data has started in glaciology, and new efficient methods to analyze change patterns are required. https://opara.zih.tu-dresden.de/xmlui/handle/123456789/5680 2026-04-05T09:16:14Z 2026-04-05T09:16:14Z Loebel, Erik Scheinert, Mirko Horwath, Martin Humbert, Angelika Sohn, Julia Heidler, Konrad Liebezeit, Charlotte Zhu, Xiao Xiang https://opara.zih.tu-dresden.de/xmlui/handle/123456789/6056 2024-01-18T15:17:04Z 2024-01-01T00:00:00Z

Manually delineated glacier calving front locations of 27 marine-terminating glaciers from 2013 to 2021 Loebel, Erik; Scheinert, Mirko; Horwath, Martin; Humbert, Angelika; Sohn, Julia; Heidler, Konrad; Liebezeit, Charlotte; Zhu, Xiao Xiang This dataset provides 898 manually delineated glacier calving front positions of 23 Greenland glaciers, two glaciers at the Antarctic Peninsula, one glacier in Svalbard and one glacier in Patagonia from 2013 to 2021. For manual delineation, we used optical Landsat-8 imagery. The dataset is composed of two parts. Firstly we provide ocean masks and frontal positions as Polygon or LineString Shapefiles respectively. Secondly, we provide 1220 input raster subsets (9 layers each) with their corresponding, manually delineated, segmentation masks. Input raster subsets have dimensions of 512 pixels by 512 pixels and are available in both png and georeferenced tif format. These machine learning ready raster subsets are optimized for training and validating artificial neural networks.

2024-01-01T00:00:00Z Loebel, Erik Baumhoer, Celia A. Dietz, Andreas Scheinert, Mirko Horwath, Martin https://opara.zih.tu-dresden.de/xmlui/handle/123456789/6044 2023-12-20T11:00:15Z 2023-01-01T00:00:00Z

Terminus area change of 17 key glaciers of the Antarctic Peninsula from 2013 to 2023 derived from remote sensing and deep learning Loebel, Erik; Baumhoer, Celia A.; Dietz, Andreas; Scheinert, Mirko; Horwath, Martin Glacier terminus area changes are derived using the rectilinear box method applied to time series of glacier calving front locations. Terminus changes are provided in text file and image format. The following glaciers are included in this data record: Birley Glacier, Bleriot Glacier, Cayley Glacier, Crane Glacier, Dinsmore-Bombardier-Edgeworth Glacier system, Drygalski Glacier, Fleming Glacier, Hariot Glacier, Hektoria-Green-Evans Glacier system, Hugi Glacier, Jorum Glacier, Murphy Wilkinson Glacier, Prospect Glacier, Sjogren Glacier, Stringfellow Glacier, Trooz Glacier and Widdowson Glacier.

2023-01-01T00:00:00Z Liebezeit, Charlotte Loebel, Erik https://opara.zih.tu-dresden.de/xmlui/handle/123456789/6029 2023-11-30T10:00:16Z 2023-01-01T00:00:00Z

Historical Greenland glacier calving front locations from 1973 until 2013 Liebezeit, Charlotte; Loebel, Erik This product contains 170 Greenland glacier calving front positions from the following glaciers: Hagen Bræ, Helheim Glacier, Kangiata Nunaata Sermia, Nioghalvfjerdsbræ, Tracy Glacier and Zachariae Isstrøm. The glacier calving front positions have been manually derived from multispectral Landsat-8 imagery and are stored in an ESRI shapefile format using the WGS 84 / NSIDC Sea Ice Polar Stereographic North (EPSG:3413) Coordinate Reference System. Hagen Bræ covers the years 1985-2013 and Nioghalvfjerdsbræ between 1985-1994 on a nearly yearly basis. For Zachariae Isstrøm, calving fronts are featured every year between 1985-1993. With two calving fronts per year, except for 1984, Helheim Glacier involves the years 1979-1988. Irregular coverage with up to 3 calving front locations in one year show Kangiata Nunaata Sermia between 1978-2012 and Tracy Glacier covering the years 1973-2013.

2023-01-01T00:00:00Z Loebel, Erik Scheinert, Mirko Horwath, Martin Humbert, Angelika Sohn, Julia Heidler, Konrad Liebezeit, Charlotte Zhu, Xiao Xiang https://opara.zih.tu-dresden.de/xmlui/handle/123456789/5823 2023-03-21T09:15:21Z 2023-01-01T00:00:00Z

Data product of Greenland glacier calving front locations delineated by deep learning, 2013 to 2021 Loebel, Erik; Scheinert, Mirko; Horwath, Martin; Humbert, Angelika; Sohn, Julia; Heidler, Konrad; Liebezeit, Charlotte; Zhu, Xiao Xiang Glacier calving front positions are derived by applying a deep learning method to multispectral Landsat-8 imagery. The product contains 9243 calving front positions across 23 Greenland outlet glaciers from March 2013 to December 2021. Calving front positions are stored in ESRI shapefile format. Due to the high temporal resolution of this data product, mostly achieving sub-weekly sampling outside polar night, it provides unique opportunities to study seasonal and sub-seasonal terminus changes. The quality of these automatically extracted calving front locations has been validated against three independent validation datasets and is comparable to that of manually digitised fronts. The following glaciers are included in this data product: Kangiata Nunaata Sermia, Helheim Glacier, Kangerdlussuaq Glacier, Jakobshavn Isbræ, Eqip Sermia, Store Glacier, Rink Isbræ, Daugaard Jensen Glacier, Ingia Isbræ, Upernavik Isstrøm, Waltershausen Glacier, Hayes Glacier, Sverdrup Glacier, Kong Oscar Glacier, Døcker Smith Glacier, Harald Molke Bræ, Tracy Glacier, Humboldt Glacier, Zachariae Isstrøm, Nioghalvfjerdsbræ, Hagen Bræ, Academy Glacier and Ryder Glacier.

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