Zeising, Ole; Steinhage, Daniel; Humbert, Angelika (2021): Repeated pRES measurements and derived Lagrangian basal melt rates at Filchner Ice Shelf between 2015/16 and 2016/17 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.930735
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Abstract:
The dataset consists of raw data and estimated Lagrangian basal melt rates of 94 repeated phase-sensitive radar (pRES) point measurements, first recorded in December 2015/January 2016 and repeated in December 2016 at the Filchner Ice Shelf, Antarctica. These Lagrangian measurements allow the estimation of basal melt rates based on estimated vertical displacements of englacial and basal reflections.
The pRES is frequency-modulated continuous wave (FMCW) radar that transmits a tone sweep – called chirp – ranging from 200 to 400 MHz over a period of one second. In order to improve the signal-to-noise ratio, 100 chirps are transmitted within a single measurement. Background information of the pRES-system is published by Brennan et al. (2014) and Nicholls et al. (2015). The processing of the data is described in Stewart (2017) and Stewart et al. (2019).
Supplement to:
Zeising, Ole; Steinhage, Daniel; Nicholls, Keith W; Corr, Hugh F J; Stewart, Craig L; Humbert, Angelika (2022): Basal melt of the southern Filchner Ice Shelf, Antarctica. The Cryosphere, 16(4), 1469-1482, https://doi.org/10.5194/tc-16-1469-2022
Related to:
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
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
Stewart, Craig L (2018): Ice-ocean interactions beneath the north-western Ross Ice Shelf, Antarctica. Apollo-University Of Cambridge Repository, https://doi.org/10.17863/CAM.21483
Stewart, Craig L; Christoffersen, Poul; Nicholls, Keith W; Williams, Michael J M; Dowdeswell, Julian A (2019): Basal melting of Ross Ice Shelf from solar heat absorption in an ice-front polynya. Nature Geoscience, 12, 435-440, https://doi.org/10.1038/s41561-019-0356-0
Project(s):
Filchner Ice Shelf Project (FISP)
Coverage:
Median Latitude: -81.388740 * Median Longitude: -43.412784 * South-bound Latitude: -82.088500 * West-bound Longitude: -45.363700 * North-bound Latitude: -80.429600 * East-bound Longitude: -40.828000
Date/Time Start: 2015-12-31T13:22:00 * Date/Time End: 2016-12-21T14:08:00
Event(s):
ANT-Land_2015/16_FISP_pRES049 * Latitude: -82.072400 * Longitude: -45.103900 * Date/Time: 2015-12-31T13:22:00 * Location: Filchner Ice Shelf * Campaign: ANT-Land_2015/16_FISP * Basis: AWI Antarctic Land Expedition * Method/Device: Phase-sensitive radar (pRES)
ANT-Land_2015/16_FISP_pRES050 * Latitude: -82.074200 * Longitude: -44.909700 * Date/Time: 2015-12-31T14:35:00 * Location: Filchner Ice Shelf * Campaign: ANT-Land_2015/16_FISP * Basis: AWI Antarctic Land Expedition * Method/Device: Phase-sensitive radar (pRES)
ANT-Land_2015/16_FISP_pRES051 * Latitude: -82.075200 * Longitude: -44.649500 * Date/Time: 2015-12-31T15:39:00 * Location: Filchner Ice Shelf * Campaign: ANT-Land_2015/16_FISP * Basis: AWI Antarctic Land Expedition * Method/Device: Phase-sensitive radar (pRES)
Comment:
Data were measured in the field by Daniel Steinhage, and Angelika Humbert. Data processing was done by Ole Zeising, data analysis by Ole Zeising and Angelika Humbert. This dataset has been planned by Angelika Humbert as part of the Filchner Ice Shelf Project (FISP). If you have questions, please contact Ole Zeising (ole.zeising@awi.de) or co-authors.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Zeising, Ole | |||
| 2 | DATE/TIME | Date/Time | Zeising, Ole | Geocode – first measurement, UTC | ||
| 3 | LATITUDE | Latitude | Zeising, Ole | Geocode – first measurement | ||
| 4 | LONGITUDE | Longitude | Zeising, Ole | Geocode – first measurement | ||
| 5 | DATE/TIME | Date/Time | Zeising, Ole | Geocode – second measurement, UTC | ||
| 6 | LATITUDE | Latitude | Zeising, Ole | Geocode – second measurement | ||
| 7 | LONGITUDE | Longitude | Zeising, Ole | Geocode – second measurement | ||
| 8 | Station label | Station | Zeising, Ole | |||
| 9 | Duration, number of days | Duration | days | Zeising, Ole | Calculated | |
| 10 | Melt rate | Melt rate | m/a | Zeising, Ole | ||
| 11 | Melt rate, error | Melt rate e | ± | Zeising, Ole | Phase-sensitive radar (pRES) | |
| 12 | Comment | Comment | Zeising, Ole | Phase-sensitive radar (pRES) | ||
| 13 | Binary Object | Binary | Zeising, Ole | extractable via MATLAB code (Nicholls et al. 2015, Stewart 2017), contact K.W. Nicholls | 2015 raw data | |
| 14 | Binary Object (File Size) | Binary (Size) | Bytes | Zeising, Ole | extractable via MATLAB code (Nicholls et al. 2015, Stewart 2017), contact K.W. Nicholls | 2015 raw data |
| 15 | Binary Object | Binary | Zeising, Ole | extractable via MATLAB code (Nicholls et al. 2015, Stewart 2017), contact K.W. Nicholls | 2016 raw data | |
| 16 | Binary Object (File Size) | Binary (Size) | Bytes | Zeising, Ole | extractable via MATLAB code (Nicholls et al. 2015, Stewart 2017), contact K.W. Nicholls | 2016 raw data |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
534 data points