Airborne ultra-wideband radar sounding over the shear margins and along flow lines at the onset region of the Northeast Greenland Ice Stream
We present a high-resolution airborne radar data set (EGRIP-NOR-2018) for the onset region of the Northeast Greenland Ice Stream (NEGIS). The radar data were acquired in May 2018 with the Alfred Wegener Institute's multichannel ultra-wideband (UWB) radar mounted on the Polar 6 aircraft. Radar p...
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ftdoajarticles:oai:doaj.org/article:0428f022c4164c9eb6e745826e89dae2 2023-05-15T16:03:53+02:00 Airborne ultra-wideband radar sounding over the shear margins and along flow lines at the onset region of the Northeast Greenland Ice Stream S. Franke D. Jansen T. Binder J. D. Paden N. Dörr T. A. Gerber H. Miller D. Dahl-Jensen V. Helm D. Steinhage I. Weikusat F. Wilhelms O. Eisen 2022-02-01T00:00:00Z https://doi.org/10.5194/essd-14-763-2022 https://doaj.org/article/0428f022c4164c9eb6e745826e89dae2 EN eng Copernicus Publications https://essd.copernicus.org/articles/14/763/2022/essd-14-763-2022.pdf https://doaj.org/toc/1866-3508 https://doaj.org/toc/1866-3516 doi:10.5194/essd-14-763-2022 1866-3508 1866-3516 https://doaj.org/article/0428f022c4164c9eb6e745826e89dae2 Earth System Science Data, Vol 14, Pp 763-779 (2022) Environmental sciences GE1-350 Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.5194/essd-14-763-2022 2022-12-31T15:10:27Z We present a high-resolution airborne radar data set (EGRIP-NOR-2018) for the onset region of the Northeast Greenland Ice Stream (NEGIS). The radar data were acquired in May 2018 with the Alfred Wegener Institute's multichannel ultra-wideband (UWB) radar mounted on the Polar 6 aircraft. Radar profiles cover an area of ∼24 000 km 2 and extend over the well-defined shear margins of the NEGIS. The survey area is centered at the location of the drill site of the East Greenland Ice-Core Project (EastGRIP), and several radar lines intersect at this location. The survey layout was designed to (i) map the stratigraphic signature of the shear margins with radar profiles aligned perpendicular to ice flow, (ii) trace the radar stratigraphy along several flow lines, and (iii) provide spatial coverage of ice thickness and basal properties. While we are able to resolve radar reflections in the deep stratigraphy, we cannot fully resolve the steeply inclined reflections at the tightly folded shear margins in the lower part of the ice column. The NEGIS is causing the most significant discrepancies between numerically modeled and observed ice surface velocities. Given the high likelihood of future climate and ocean warming, this extensive data set of new high-resolution radar data in combination with the EastGRIP ice core will be a key contribution to understand the past and future dynamics of the NEGIS. The EGRIP-NOR-2018 radar data products can be obtained from the PANGAEA data publisher ( https://doi.pangaea.de/10.1594/PANGAEA.928569 Franke et al. , 2021 a ). Article in Journal/Newspaper East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core Directory of Open Access Journals: DOAJ Articles Greenland Earth System Science Data 14 2 763 779 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 S. Franke D. Jansen T. Binder J. D. Paden N. Dörr T. A. Gerber H. Miller D. Dahl-Jensen V. Helm D. Steinhage I. Weikusat F. Wilhelms O. Eisen Airborne ultra-wideband radar sounding over the shear margins and along flow lines at the onset region of the Northeast Greenland Ice Stream |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
We present a high-resolution airborne radar data set (EGRIP-NOR-2018) for the onset region of the Northeast Greenland Ice Stream (NEGIS). The radar data were acquired in May 2018 with the Alfred Wegener Institute's multichannel ultra-wideband (UWB) radar mounted on the Polar 6 aircraft. Radar profiles cover an area of ∼24 000 km 2 and extend over the well-defined shear margins of the NEGIS. The survey area is centered at the location of the drill site of the East Greenland Ice-Core Project (EastGRIP), and several radar lines intersect at this location. The survey layout was designed to (i) map the stratigraphic signature of the shear margins with radar profiles aligned perpendicular to ice flow, (ii) trace the radar stratigraphy along several flow lines, and (iii) provide spatial coverage of ice thickness and basal properties. While we are able to resolve radar reflections in the deep stratigraphy, we cannot fully resolve the steeply inclined reflections at the tightly folded shear margins in the lower part of the ice column. The NEGIS is causing the most significant discrepancies between numerically modeled and observed ice surface velocities. Given the high likelihood of future climate and ocean warming, this extensive data set of new high-resolution radar data in combination with the EastGRIP ice core will be a key contribution to understand the past and future dynamics of the NEGIS. The EGRIP-NOR-2018 radar data products can be obtained from the PANGAEA data publisher ( https://doi.pangaea.de/10.1594/PANGAEA.928569 Franke et al. , 2021 a ). |
format |
Article in Journal/Newspaper |
author |
S. Franke D. Jansen T. Binder J. D. Paden N. Dörr T. A. Gerber H. Miller D. Dahl-Jensen V. Helm D. Steinhage I. Weikusat F. Wilhelms O. Eisen |
author_facet |
S. Franke D. Jansen T. Binder J. D. Paden N. Dörr T. A. Gerber H. Miller D. Dahl-Jensen V. Helm D. Steinhage I. Weikusat F. Wilhelms O. Eisen |
author_sort |
S. Franke |
title |
Airborne ultra-wideband radar sounding over the shear margins and along flow lines at the onset region of the Northeast Greenland Ice Stream |
title_short |
Airborne ultra-wideband radar sounding over the shear margins and along flow lines at the onset region of the Northeast Greenland Ice Stream |
title_full |
Airborne ultra-wideband radar sounding over the shear margins and along flow lines at the onset region of the Northeast Greenland Ice Stream |
title_fullStr |
Airborne ultra-wideband radar sounding over the shear margins and along flow lines at the onset region of the Northeast Greenland Ice Stream |
title_full_unstemmed |
Airborne ultra-wideband radar sounding over the shear margins and along flow lines at the onset region of the Northeast Greenland Ice Stream |
title_sort |
airborne ultra-wideband radar sounding over the shear margins and along flow lines at the onset region of the northeast greenland ice stream |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/essd-14-763-2022 https://doaj.org/article/0428f022c4164c9eb6e745826e89dae2 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core |
genre_facet |
East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core |
op_source |
Earth System Science Data, Vol 14, Pp 763-779 (2022) |
op_relation |
https://essd.copernicus.org/articles/14/763/2022/essd-14-763-2022.pdf https://doaj.org/toc/1866-3508 https://doaj.org/toc/1866-3516 doi:10.5194/essd-14-763-2022 1866-3508 1866-3516 https://doaj.org/article/0428f022c4164c9eb6e745826e89dae2 |
op_doi |
https://doi.org/10.5194/essd-14-763-2022 |
container_title |
Earth System Science Data |
container_volume |
14 |
container_issue |
2 |
container_start_page |
763 |
op_container_end_page |
779 |
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1766399577618907136 |