GNSS Data collected at Priestley Glacier November 2018
This is GNSS data of four stations covering the grounding zone of Priestley Glacier Antarctica.Tidal modulation of ice streams and their adjacent ice shelves is a real-world experiment to understand ice-dynamic processes. We observe the dynamics of Priestley Glacier, Antarctica, using Terrestrial Ra...
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Online Access: | https://dx.doi.org/10.1594/pangaea.936090 https://doi.pangaea.de/10.1594/PANGAEA.936090 |
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ftdatacite:10.1594/pangaea.936090 2023-05-15T13:44:13+02:00 GNSS Data collected at Priestley Glacier November 2018 Drews, Reinhard Wild, Christian T Marsh, Oliver Rack, Wolfgang Ehlers, Todd A Neckel, Niklas Helm, Veit 2021 application/zip https://dx.doi.org/10.1594/pangaea.936090 https://doi.pangaea.de/10.1594/PANGAEA.936090 en eng PANGAEA - Data Publisher for Earth & Environmental Science Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Antarctica GNSS GPS Grounding Line The European network for observing our changing planet ERA-PLANET Collection Collection of Datasets article 2021 ftdatacite https://doi.org/10.1594/pangaea.936090 2022-02-08T16:39:48Z This is GNSS data of four stations covering the grounding zone of Priestley Glacier Antarctica.Tidal modulation of ice streams and their adjacent ice shelves is a real-world experiment to understand ice-dynamic processes. We observe the dynamics of Priestley Glacier, Antarctica, using Terrestrial Radar Interferometry (TRI) and GNSS. Ocean tides are predominantly diurnal but horizontal GNSS displacements oscillate also semi-diurnally. The oscillations are strongest in the ice shelf and tidal signatures decay near-linearly in the TRI data over >10 km upstream of the grounding line. Tidal flexing is observed >6 km upstream of the grounding line including cm-scale uplift. Tidal grounding line migration is small and <40 % of the ice thickness. The frequency doubling of horizontal displacements relative to the ocean tides is consistent with variable ice-shelf buttressing demonstrated with a visco-elastic Maxwell model. Taken together, this supports previously hypothesized flexural ice softening in the grounding-zone through tides and offers new observational constraints for the role of ice rheology in ice-shelf buttressing. Article in Journal/Newspaper Antarc* Antarctica Ice Shelf Ice Shelves Priestley Glacier DataCite Metadata Store (German National Library of Science and Technology) Priestley ENVELOPE(161.883,161.883,-75.183,-75.183) Priestley Glacier ENVELOPE(163.367,163.367,-74.333,-74.333) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Antarctica GNSS GPS Grounding Line The European network for observing our changing planet ERA-PLANET |
spellingShingle |
Antarctica GNSS GPS Grounding Line The European network for observing our changing planet ERA-PLANET Drews, Reinhard Wild, Christian T Marsh, Oliver Rack, Wolfgang Ehlers, Todd A Neckel, Niklas Helm, Veit GNSS Data collected at Priestley Glacier November 2018 |
topic_facet |
Antarctica GNSS GPS Grounding Line The European network for observing our changing planet ERA-PLANET |
description |
This is GNSS data of four stations covering the grounding zone of Priestley Glacier Antarctica.Tidal modulation of ice streams and their adjacent ice shelves is a real-world experiment to understand ice-dynamic processes. We observe the dynamics of Priestley Glacier, Antarctica, using Terrestrial Radar Interferometry (TRI) and GNSS. Ocean tides are predominantly diurnal but horizontal GNSS displacements oscillate also semi-diurnally. The oscillations are strongest in the ice shelf and tidal signatures decay near-linearly in the TRI data over >10 km upstream of the grounding line. Tidal flexing is observed >6 km upstream of the grounding line including cm-scale uplift. Tidal grounding line migration is small and <40 % of the ice thickness. The frequency doubling of horizontal displacements relative to the ocean tides is consistent with variable ice-shelf buttressing demonstrated with a visco-elastic Maxwell model. Taken together, this supports previously hypothesized flexural ice softening in the grounding-zone through tides and offers new observational constraints for the role of ice rheology in ice-shelf buttressing. |
format |
Article in Journal/Newspaper |
author |
Drews, Reinhard Wild, Christian T Marsh, Oliver Rack, Wolfgang Ehlers, Todd A Neckel, Niklas Helm, Veit |
author_facet |
Drews, Reinhard Wild, Christian T Marsh, Oliver Rack, Wolfgang Ehlers, Todd A Neckel, Niklas Helm, Veit |
author_sort |
Drews, Reinhard |
title |
GNSS Data collected at Priestley Glacier November 2018 |
title_short |
GNSS Data collected at Priestley Glacier November 2018 |
title_full |
GNSS Data collected at Priestley Glacier November 2018 |
title_fullStr |
GNSS Data collected at Priestley Glacier November 2018 |
title_full_unstemmed |
GNSS Data collected at Priestley Glacier November 2018 |
title_sort |
gnss data collected at priestley glacier november 2018 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2021 |
url |
https://dx.doi.org/10.1594/pangaea.936090 https://doi.pangaea.de/10.1594/PANGAEA.936090 |
long_lat |
ENVELOPE(161.883,161.883,-75.183,-75.183) ENVELOPE(163.367,163.367,-74.333,-74.333) |
geographic |
Priestley Priestley Glacier |
geographic_facet |
Priestley Priestley Glacier |
genre |
Antarc* Antarctica Ice Shelf Ice Shelves Priestley Glacier |
genre_facet |
Antarc* Antarctica Ice Shelf Ice Shelves Priestley Glacier |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.936090 |
_version_ |
1766198935439802368 |