Bed topography of Princess Elizabeth Land in East Antarctica
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Published:2020-11-14
Issue:4
Volume:12
Page:2765-2774
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ISSN:1866-3516
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Container-title:Earth System Science Data
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language:en
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Short-container-title:Earth Syst. Sci. Data
Author:
Cui XiangbinORCID, Jeofry Hafeez, Greenbaum Jamin S.ORCID, Guo Jingxue, Li Lin, Lindzey Laura E., Habbal Feras A., Wei WeiORCID, Young Duncan A.ORCID, Ross NeilORCID, Morlighem MathieuORCID, Jong Lenneke M.ORCID, Roberts Jason L., Blankenship Donald D., Bo Sun, Siegert Martin J.ORCID
Abstract
Abstract. We present a topographic digital elevation model (DEM) for Princess Elizabeth Land (PEL), East Antarctica. The DEM covers an area of ∼900 000 km2 and was built from radio-echo sounding data collected during four campaigns since 2015. Previously, to generate the Bedmap2 topographic product, PEL's bed was characterized from low-resolution satellite gravity data across an otherwise large (>200 km wide) data-free zone. We use the mass conservation (MC) method to produce an ice thickness grid across faster flowing (>30 m yr−1) regions of the ice sheet and streamline diffusion in slower flowing areas. The resulting ice thickness model is integrated with an ice surface model to build the bed DEM. Together with BedMachine Antarctica and Bedmap2, this new bed DEM completes the first-order measurement of subglacial continental Antarctica – an international mission that began around 70 years ago. The ice thickness data and bed DEMs of PEL (resolved horizontally at 500 m relative to ice surface elevations obtained from the Reference Elevation Model of Antarctica – REMA) are accessible from https://doi.org/10.5281/zenodo.4023343 (Cui et al., 2020a) and https://doi.org/10.5281/zenodo.4023393 (Cui et al., 2020b).
Funder
National Natural Science Foundation of China British Council G. Unger Vetlesen Foundation Australian Antarctic Division
Publisher
Copernicus GmbH
Subject
General Earth and Planetary Sciences
Reference37 articles.
1. Bamber, J. L., Gomez-Dans, J. L., and Griggs, J. A.: A new 1 km digital elevation model of the Antarctic derived from combined satellite radar and laser data – Part 1: Data and methods, The Cryosphere, 3, 101–111, https://doi.org/10.5194/tc-3-101-2009, 2009. 2. Bingham, R. G. and Siegert, M. J.: Radar-derived bed roughness characterization of Institute and Möller ice streams, West Antarctica, and comparison with Siple Coast ice streams, Geophys. Res. Lett., 34, L21504, https://doi.org/10.1029/2007GL031483, 2007. 3. Blankenship, D. D., Kempf, S. D., Young, D. A., Richter, T. G., Schroeder, D. M., Greenbaum, J. S., Holt, J. W., van Ommen, T., Warner, R. C., Roberts, J. L., Young, N. W., Lemeur, E., and Siegert, M. J.: IceBridge HiCARS 1 L2 geolocated ice thickness, Version 1. Boulder, Colorado, USA, NASA National Snow and Ice Data Center Distributed Active Archive Center, https://doi.org/10.5067/F5FGUT9F5089, 2016. 4. Blankenship, D. D., Kempf, S. D., Young, D. A., Richter, T. G., Schroeder, D. M., Ng, G., Greenbaum, J. S., van Ommen, T., Warner, R. C., Roberts, J. L., Young, N. W., Lemeur, E., and Siegert, M. J.: IceBridge HiCARS 2 L2 geolocated ice thickness, version 1. Boulder, Colorado, USA, NASA National Snow and Data Center Distributed Active Archive Center, https://doi.org/10.5067/9EBR2T0VXUDG, 2017. 5. Cui, X., Greenbaum, J. S., Beem, L. H., Guo, J., Ng, G., Li, L., Blankenship, D., and Sun, B.: The First Fixed-wing Aircraft for Chinese Antarctic Expeditions: Airframe, modifications, Scientific Instrumentation and Applications, J. Environ. Eng. Geophys., 23, 1–13, 2018.
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