Ultra-wideband radar data upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier), Northeast Greenland ...
Here we present ultra-wideband radio-echo sounding data in northeast Greenland upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier; 79NG). The radar data were acquired with AWI's multi-channel ultra-wideband (UWB) radar system in 2018. Most radar lines are located clo...
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ftdatacite:10.1594/pangaea.949391 2024-06-09T07:46:09+00:00 Ultra-wideband radar data upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier), Northeast Greenland ... Franke, Steven Helm, Veit Steinhage, Daniel Binder, Tobias Jansen, Daniela 2022 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.949391 https://doi.pangaea.de/10.1594/PANGAEA.949391 en eng PANGAEA https://dx.doi.org/10.1038/s41561-022-01082-2 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 AWI UWB Greenland Greenland ice sheet Ice dynamics radio-echo sounding RES Event label Date/Time of event File content Documentation file Binary Object Binary Object File Size Aircraft P6_211_RESURV79_2018 POLAR 6 Dataset dataset 2022 ftdatacite https://doi.org/10.1594/pangaea.94939110.1038/s41561-022-01082-2 2024-05-13T12:44:57Z Here we present ultra-wideband radio-echo sounding data in northeast Greenland upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier; 79NG). The radar data were acquired with AWI's multi-channel ultra-wideband (UWB) radar system in 2018. Most radar lines are located close to the ice divide; where ice flow velocity is almost zero and increases eastwards to as much as 15 meters per year. The survey was designed to closely investigate a set of folds. Twelve RES profiles were flown, at 7.5 km spacing, and oriented perpendicular to the 100° true North trend of the fold axes. The radar data has been used to decipher the regional ice-flow history of the northeastern Greenland Ice Sheet based on its internal stratigraphy. We applied a three-dimensional reconstruction of time-equivalent horizons to map folds deep below the surface that we then attribute to the deformation caused by now-extinct ice streams. We propose that locally this ancient ice flow regime was much more focused and reached ... : We present two radar data products: CSARP_qlook (unfocused) and CSARP_standard (SAR focused). For both, the files contain the radar data in the .mat format as well as pdf files of each segment with flight tracks and a radargram for each frame. Furthermore, we include an excel spreadsheet (rds_param_2018_Greenland_Polar6_FINEGIS.xls, see Further details link) which contains all radar data processing parameters.--CSARP_qlook: This product uses unfocused synthetic aperture radar processing for each channel and assumes that all reflections arrive at the receiver from nadir. The data are coherently stacked in slow time, and no correction for propagation delay changes is applied. Here, no motion compensation is applied. Finally, the signals from all eight channels are averaged incoherently. The range resolution is the same as for all other products. The trace spacing is ∼ 27–30 m.--CSARP_standard: This data product uses focused synthetic aperture radar processing (fk migration) on each channel individually. The ... Dataset glacier Greenland Ice Sheet DataCite Metadata Store (German National Library of Science and Technology) Greenland |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
AWI UWB Greenland Greenland ice sheet Ice dynamics radio-echo sounding RES Event label Date/Time of event File content Documentation file Binary Object Binary Object File Size Aircraft P6_211_RESURV79_2018 POLAR 6 |
spellingShingle |
AWI UWB Greenland Greenland ice sheet Ice dynamics radio-echo sounding RES Event label Date/Time of event File content Documentation file Binary Object Binary Object File Size Aircraft P6_211_RESURV79_2018 POLAR 6 Franke, Steven Helm, Veit Steinhage, Daniel Binder, Tobias Jansen, Daniela Ultra-wideband radar data upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier), Northeast Greenland ... |
topic_facet |
AWI UWB Greenland Greenland ice sheet Ice dynamics radio-echo sounding RES Event label Date/Time of event File content Documentation file Binary Object Binary Object File Size Aircraft P6_211_RESURV79_2018 POLAR 6 |
description |
Here we present ultra-wideband radio-echo sounding data in northeast Greenland upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier; 79NG). The radar data were acquired with AWI's multi-channel ultra-wideband (UWB) radar system in 2018. Most radar lines are located close to the ice divide; where ice flow velocity is almost zero and increases eastwards to as much as 15 meters per year. The survey was designed to closely investigate a set of folds. Twelve RES profiles were flown, at 7.5 km spacing, and oriented perpendicular to the 100° true North trend of the fold axes. The radar data has been used to decipher the regional ice-flow history of the northeastern Greenland Ice Sheet based on its internal stratigraphy. We applied a three-dimensional reconstruction of time-equivalent horizons to map folds deep below the surface that we then attribute to the deformation caused by now-extinct ice streams. We propose that locally this ancient ice flow regime was much more focused and reached ... : We present two radar data products: CSARP_qlook (unfocused) and CSARP_standard (SAR focused). For both, the files contain the radar data in the .mat format as well as pdf files of each segment with flight tracks and a radargram for each frame. Furthermore, we include an excel spreadsheet (rds_param_2018_Greenland_Polar6_FINEGIS.xls, see Further details link) which contains all radar data processing parameters.--CSARP_qlook: This product uses unfocused synthetic aperture radar processing for each channel and assumes that all reflections arrive at the receiver from nadir. The data are coherently stacked in slow time, and no correction for propagation delay changes is applied. Here, no motion compensation is applied. Finally, the signals from all eight channels are averaged incoherently. The range resolution is the same as for all other products. The trace spacing is ∼ 27–30 m.--CSARP_standard: This data product uses focused synthetic aperture radar processing (fk migration) on each channel individually. The ... |
format |
Dataset |
author |
Franke, Steven Helm, Veit Steinhage, Daniel Binder, Tobias Jansen, Daniela |
author_facet |
Franke, Steven Helm, Veit Steinhage, Daniel Binder, Tobias Jansen, Daniela |
author_sort |
Franke, Steven |
title |
Ultra-wideband radar data upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier), Northeast Greenland ... |
title_short |
Ultra-wideband radar data upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier), Northeast Greenland ... |
title_full |
Ultra-wideband radar data upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier), Northeast Greenland ... |
title_fullStr |
Ultra-wideband radar data upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier), Northeast Greenland ... |
title_full_unstemmed |
Ultra-wideband radar data upstream of the northern catchment of the Nioghalvfjerdsbrae (79°North Glacier), Northeast Greenland ... |
title_sort |
ultra-wideband radar data upstream of the northern catchment of the nioghalvfjerdsbrae (79°north glacier), northeast greenland ... |
publisher |
PANGAEA |
publishDate |
2022 |
url |
https://dx.doi.org/10.1594/pangaea.949391 https://doi.pangaea.de/10.1594/PANGAEA.949391 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_relation |
https://dx.doi.org/10.1038/s41561-022-01082-2 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.1594/pangaea.94939110.1038/s41561-022-01082-2 |
_version_ |
1801375902627528704 |