Antarctica; Roi Baudouin; Sentinel-1; Speckle Tracking; Antarctic ice sheets; East antarctica; Ice flow; Ice shelves; Ice velocity; Roi baudouin; Spatio-temporal resolution; Speckle tracking; Computer Science Applications; Earth and Planetary Sciences (all)
Abstract :
[en] In contact with the ocean, the Antarctic Ice Sheet (AIS) starts to float and forms ice shelves. These ice shelves have an important role in the AIS stability, acting as active regulators of the upward ice streams. In this article, we extract from four years of Sentinel-1 SAR images ice velocity fields. Using speckle tracking, we determine the ice velocities at high spatial and temporal resolution over the particular case of the Roi Baudouin Ice Shelf-RBIS. The results show the strong influence of ice rises, as well as intra-annual temporal variability, a part being attributable to tides and inverse barometer effect. Apart from these variations, we observe no significant trend in any regions of the RBIS. Nevertheless, and following the recent RBIS calving event, we recommend continuing to monitor the region and observing any potential changes.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Glaude, Quentin ; Université de Liège - ULiège > Unités de recherche interfacultaires > Space sciences, Technologies and Astrophysics Research (STAR) ; Université Libre de Bruxelles, Laboratory of Glaciology, Bruxelles, Belgium
Pattyn, F.; Université Libre de Bruxelles, Laboratory of Glaciology, Bruxelles, Belgium
Barbier, Christian ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège)
Orban, Anne ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège)
Language :
English
Title :
Recent High Spatiotemporal-Resolution Observations and Evolution of Ice-Flow Fields Over the ROI Baudouin Ice Shelf, East Antarctica
Publication date :
22 September 2022
Event name :
IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium
Event place :
Kuala Lumpur, Mys
Event date :
17-07-2022 => 22-07-2022
Audience :
International
Main work title :
IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium
Publisher :
Institute of Electrical and Electronics Engineers Inc.
IEEE. GRSS - Institute of Electrical and Electronics Engineers. Geoscience and Remote Sensing Society
Funding text :
This research is supported by the French community of Belgium in the funding context of a FRIA grant, and carried out in the framework of the MIMO (Monitoring melt where Ice Meets Ocean) project funded by the Belgian Science Policy contracts Nos. SR/00/336. The Fondation Jaumotte-Demoulin et Fonds David et Alice Van Buuren is also acknowledged for the financial support.
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