Sun, Sainan; Pattyn, Frank (2024): ApRES time series from Roi Baudouin Ice Shelf, 2016/02-2017/01 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.964065
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Abstract:
The ApRES (Brennan et al., 2014; Nicholls et al., 2015) was deployed from January to December in 2016 on the RBIS about 90 km from the ice shelf front and 5 km seaward from the grounded ice on the fast-flowing portion of the West Ragnhild glacier, which is the third largest outlet glacier along the Dronning Maud Land Coast (Callens et al., 2014). The ice thickness at the site was ∼300 m in the trough of a channel (Drews, 2015) but increases up to 600 m in the grounding zone upstream, and ice flow velocities in this region range between 250 and 300 m/a (Rignot et al., 2013). By transmitting an electromagnetic signal and receiving the echo, the radar system can detect the ice base (ice-ocean interface) as well as relatively weak internal reflecting layers that are due to changes in ice permittivity. Between two consecutive measurements, the relative vertical motion of internal layers and the base can therefore be tracked. The displacements of the internal layers determine how the thickness of the column evolves due to vertical strain and bottom melting.
Related to:
Sun, Sainan; Hattermann, Tore; Pattyn, Frank; Nicholls, Keith W; Drews, Reinhard; Berger, Sophie (2019): Topographic Shelf Waves Control Seasonal Melting Near Antarctic Ice Shelf Grounding Lines. Geophysical Research Letters, 46(16), 9824-9832, https://doi.org/10.1029/2019GL083881
References:
Brennan, Paul V; Lok, Lai Bun; Nicholls, Keith W; Corr, Hugh F J (2014): Phase‐sensitive FMCW radar system for high‐precision Antarctic ice shelf profile monitoring. IET Radar, Sonar & Navigation, 8(7), 776-786, https://doi.org/10.1049/iet-rsn.2013.0053
Drews, Reinhard; Matsuoka, Kenichi; Martín, Carlos; Callens, Denis; Bergeot, N; Pattyn, Frank (2015): Evolution of Derwael Ice Rise in Dronning Maud Land, Antarctica, over the last millennia. Journal of Geophysical Research-Earth Surface, 120(3), 564-579, https://doi.org/10.1002/2014JF003246
Nicholls, Keith W; Corr, Hugh F J; Stewart, Craig L; Lok, Lai Bun; Brennan, Paul V; Vaughan, David G (2015): A ground-based radar for measuring vertical strain rates and time-varying basal melt rates in ice sheets and shelves. Journal of Glaciology, 61(230), 1079-1087, https://doi.org/10.3189/2015JoG15J073
Rignot, Eric; Jacobs, Stanley S; Mouginot, Jeremie P; Scheuchl, Bernd (2013): Ice-Shelf Melting Around Antarctica. Science, 341(6143), 266-270, https://doi.org/10.1126/science.1235798
Funding:
Belgian Federal Science Policy Office (BELSPO), grant/award no. SD/CA/06A: Constraining Ice Mass Change in Antarctica, IceCon
Coverage:
Latitude: -71.435280 * Longitude: 29.823330
Date/Time Start: 2016-02-02T16:33:00 * Date/Time End: 2017-01-18T17:34:00
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Sun, Sainan | Geocode | ||
| 2 | netCDF file | netCDF | Sun, Sainan | |||
| 3 | netCDF file (File Size) | netCDF (Size) | Bytes | Sun, Sainan |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
1195 data points