Zeising, Ole; Steinhage, Daniel; Berger, Sophie; Drews, Reinhard; Ershadi, M Reza; Fromm, Tanja; Hattermann, Tore; Pattyn, Frank; Eisen, Olaf: Time series of autonomous phase-sensitive radar (ApRES) measurements at location EIS8 on Ekström Ice Shelf, Antarctica from January 2021 to November 2021 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.972020 (dataset in review), In: Zeising, O et al.: Time series of autonomous phase-sensitive radar (ApRES) measurements and determined basal melt rates at location EIS8 on Ekström Ice Shelf, Antarctica from January 2021 to November 2021 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.972019 (dataset in review)
Abstract:
The dataset consists of raw data from autonomous phase-sensitive radar (ApRES) measurements. The ApRES was operated with two broadband frame antennas at the Ekström Ice Shelf since April 2020 with one measurement every hour. These Lagrangian measurements allow the estimation of basal melt rates based on estimated vertical displacements of englacial and basal reflections. The ApRES is an autonomous operating 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, 20 chirps were transmitted within a single measurement. These measurements were repeated every hour. A raw data file contains up to 4 measurements. Background of the pRES-system is published by Nicholls et al. (2015). The processing of the data is described in Zeising et al., (submitted to The Cryosphere). The time series contains a data gap from 1 April to 16 May 2021.
Related to:
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
Zeising, Ole; Hattermann, Tore; Kaleschke, Lars; Berger, Sophie; Drews, Reinhard; Ershadi, M Reza; Fromm, Tanja; Pattyn, Frank; Steinhage, Daniel; Eisen, Olaf (submitted): Weakening of meltwater plume reduces basal melting in summer at Ekström Ice Shelf, Antarctica. The Cryosphere Discussions, https://doi.org/10.5194/egusphere-2024-2109
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. ANT-2021_MIMO-EIS: MIMO-EIS
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_ANT_8: Quasi-Long-Term Observatory Glaciology at Neumayer station
Coverage:
Latitude: -70.820000 * Longitude: -8.730000
Date/Time Start: 2021-01-10T00:00:00 * Date/Time End: 2021-11-25T00:00:00
Event(s):
EIS-8_ApRES_2021 * Latitude: -70.820000 * Longitude: -8.730000 * Date/Time Start: 2021-01-10T00:00:00 * Date/Time End: 2021-11-25T00:00:00 * O2A Registry URI: registry.o2a-data.de * Location: Ekström Ice Shelf * Campaign: ANT-Land_2022_MIMO-EIS (Monitoring Melt where Ice Meets Ocean) * Basis: NEUMAYER III * Method/Device: Autonomous phase-sensitive radio-echo sounder (ApRES)
Comment:
If you have questions, please contact Ole Zeising (ole.zeising@awi.de) or co-authors.
Data were measured in the field by: Noah Trumpik, Ina Wehner (2019/20 & 2020/21); Timo Dornhöfer, Lorenz Marten (2020/21 & 2021/22); Falk Oraschewski, Martin Petri, Maximilian Betz (2022/23); Hameed Moqadam, Fyntan Shaw (2023/24).
Data processing was done by Ole Zeising.
This dataset has been planned by Olaf Eisen as part of the MIMO-EIS Project.
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
9.1 GBytes