Drainage basin delineation for outlet glaciers of Northeast Greenland based on Sentinel-1 ice velocities and TanDEM-X elevations
The drainage divides of ice sheets separate the overall glaciated area into multiple sectors. These drainage basins are essential for partitioning mass changes of the ice sheet, as they specify the area over which basin specific measurements are integrated. The delineation of drainage basins on ice...
Published in: | Remote Sensing of Environment |
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Online Access: | https://epic.awi.de/id/eprint/50583/ https://epic.awi.de/id/eprint/50583/1/Krieger2020_Drainage_basin_delineation_for_outlet_glaciers_of_Northeast_Greenland_based_on_Sentinel-1_ice_velocities_and_TanDEM-X_elevations.pdf https://hdl.handle.net/10013/epic.7be2ace8-6488-4b18-92ff-0cac86cefa88 |
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ftawi:oai:epic.awi.de:50583 2024-09-15T17:47:05+00:00 Drainage basin delineation for outlet glaciers of Northeast Greenland based on Sentinel-1 ice velocities and TanDEM-X elevations Krieger, Lukas Floricioiu, Dana Neckel, Niklas 2020 application/pdf https://epic.awi.de/id/eprint/50583/ https://epic.awi.de/id/eprint/50583/1/Krieger2020_Drainage_basin_delineation_for_outlet_glaciers_of_Northeast_Greenland_based_on_Sentinel-1_ice_velocities_and_TanDEM-X_elevations.pdf https://hdl.handle.net/10013/epic.7be2ace8-6488-4b18-92ff-0cac86cefa88 unknown https://epic.awi.de/id/eprint/50583/1/Krieger2020_Drainage_basin_delineation_for_outlet_glaciers_of_Northeast_Greenland_based_on_Sentinel-1_ice_velocities_and_TanDEM-X_elevations.pdf Krieger, L. , Floricioiu, D. and Neckel, N. orcid:0000-0003-4300-5488 (2020) Drainage basin delineation for outlet glaciers of Northeast Greenland based on Sentinel-1 ice velocities and TanDEM-X elevations , Remote Sensing of Environment, 237 , p. 111483 . doi:10.1016/j.rse.2019.111483 <https://doi.org/10.1016/j.rse.2019.111483> , hdl:10013/epic.7be2ace8-6488-4b18-92ff-0cac86cefa88 EPIC3Remote Sensing of Environment, 237, pp. 111483 Article isiRev info:eu-repo/semantics/article 2020 ftawi https://doi.org/10.1016/j.rse.2019.111483 2024-06-24T04:23:24Z The drainage divides of ice sheets separate the overall glaciated area into multiple sectors. These drainage basins are essential for partitioning mass changes of the ice sheet, as they specify the area over which basin specific measurements are integrated. The delineation of drainage basins on ice sheets is challenging due to their gentle slopes accompanied by local terrain disturbances and complex patterns of ice movement. Until now, in Greenland the basins have been mostly delineated along the major ice divides, which results in large drainage sectors containing multiple outlet glaciers. However, when focusing on measuring glaciological parameters of individual outlet glaciers, more detailed drainage basin delineations are needed. Here we present for the first time a detailed and fully traceable approach that combines ice sheet wide velocity measurements by Sentinel-1 and the high resolution TanDEM-X global DEM to derive individual glacier drainage basins. We delineated catchments for the Northeast Greenland Ice Sheet with a modified watershed algorithm and present results for 31 drainage basins. Even though validation of drainage basins remains a difficult task, we estimated basin probabilities from Monte-Carlo experiments and applied the method to a variety of different ice velocity and DEM datasets finding discrepancies of up to 16 in the extent of catchment areas. The proposed approach has the potential to produce drainage areas for the entirety of the Greenland and Antarctic ice sheets. Article in Journal/Newspaper Antarc* Antarctic glacier Greenland Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Remote Sensing of Environment 237 111483 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The drainage divides of ice sheets separate the overall glaciated area into multiple sectors. These drainage basins are essential for partitioning mass changes of the ice sheet, as they specify the area over which basin specific measurements are integrated. The delineation of drainage basins on ice sheets is challenging due to their gentle slopes accompanied by local terrain disturbances and complex patterns of ice movement. Until now, in Greenland the basins have been mostly delineated along the major ice divides, which results in large drainage sectors containing multiple outlet glaciers. However, when focusing on measuring glaciological parameters of individual outlet glaciers, more detailed drainage basin delineations are needed. Here we present for the first time a detailed and fully traceable approach that combines ice sheet wide velocity measurements by Sentinel-1 and the high resolution TanDEM-X global DEM to derive individual glacier drainage basins. We delineated catchments for the Northeast Greenland Ice Sheet with a modified watershed algorithm and present results for 31 drainage basins. Even though validation of drainage basins remains a difficult task, we estimated basin probabilities from Monte-Carlo experiments and applied the method to a variety of different ice velocity and DEM datasets finding discrepancies of up to 16 in the extent of catchment areas. The proposed approach has the potential to produce drainage areas for the entirety of the Greenland and Antarctic ice sheets. |
format |
Article in Journal/Newspaper |
author |
Krieger, Lukas Floricioiu, Dana Neckel, Niklas |
spellingShingle |
Krieger, Lukas Floricioiu, Dana Neckel, Niklas Drainage basin delineation for outlet glaciers of Northeast Greenland based on Sentinel-1 ice velocities and TanDEM-X elevations |
author_facet |
Krieger, Lukas Floricioiu, Dana Neckel, Niklas |
author_sort |
Krieger, Lukas |
title |
Drainage basin delineation for outlet glaciers of Northeast Greenland based on Sentinel-1 ice velocities and TanDEM-X elevations |
title_short |
Drainage basin delineation for outlet glaciers of Northeast Greenland based on Sentinel-1 ice velocities and TanDEM-X elevations |
title_full |
Drainage basin delineation for outlet glaciers of Northeast Greenland based on Sentinel-1 ice velocities and TanDEM-X elevations |
title_fullStr |
Drainage basin delineation for outlet glaciers of Northeast Greenland based on Sentinel-1 ice velocities and TanDEM-X elevations |
title_full_unstemmed |
Drainage basin delineation for outlet glaciers of Northeast Greenland based on Sentinel-1 ice velocities and TanDEM-X elevations |
title_sort |
drainage basin delineation for outlet glaciers of northeast greenland based on sentinel-1 ice velocities and tandem-x elevations |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/50583/ https://epic.awi.de/id/eprint/50583/1/Krieger2020_Drainage_basin_delineation_for_outlet_glaciers_of_Northeast_Greenland_based_on_Sentinel-1_ice_velocities_and_TanDEM-X_elevations.pdf https://hdl.handle.net/10013/epic.7be2ace8-6488-4b18-92ff-0cac86cefa88 |
genre |
Antarc* Antarctic glacier Greenland Ice Sheet |
genre_facet |
Antarc* Antarctic glacier Greenland Ice Sheet |
op_source |
EPIC3Remote Sensing of Environment, 237, pp. 111483 |
op_relation |
https://epic.awi.de/id/eprint/50583/1/Krieger2020_Drainage_basin_delineation_for_outlet_glaciers_of_Northeast_Greenland_based_on_Sentinel-1_ice_velocities_and_TanDEM-X_elevations.pdf Krieger, L. , Floricioiu, D. and Neckel, N. orcid:0000-0003-4300-5488 (2020) Drainage basin delineation for outlet glaciers of Northeast Greenland based on Sentinel-1 ice velocities and TanDEM-X elevations , Remote Sensing of Environment, 237 , p. 111483 . doi:10.1016/j.rse.2019.111483 <https://doi.org/10.1016/j.rse.2019.111483> , hdl:10013/epic.7be2ace8-6488-4b18-92ff-0cac86cefa88 |
op_doi |
https://doi.org/10.1016/j.rse.2019.111483 |
container_title |
Remote Sensing of Environment |
container_volume |
237 |
container_start_page |
111483 |
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1810495649787936768 |