Bed topography of Princess Elizabeth Land in East Antarctica

<p>We present a topographic digital elevation model (DEM) for Princess Elizabeth Land (PEL), East Antarctica. The DEM covers an area of <span class="inline-formula">∼900 000</span>&thinsp;<span class="inline-formula">km<sup>2</sup></span...

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Main Authors: X. Cui, H. Jeofry, J. S. Greenbaum, J. Guo, L. Li, L. E. Lindzey, F. A. Habbal, W. Wei, D. A. Young, N. Ross, M. Morlighem, L. M. Jong, J. L. Roberts, D. D. Blankenship, S. Bo, M. J. Siegert
Format: Article
Language:English
Published: Copernicus Publications 2020-11-01
Series:Earth System Science Data
Online Access:https://essd.copernicus.org/articles/12/2765/2020/essd-12-2765-2020.pdf
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author X. Cui
H. Jeofry
H. Jeofry
J. S. Greenbaum
J. S. Greenbaum
J. Guo
L. Li
L. E. Lindzey
F. A. Habbal
W. Wei
D. A. Young
N. Ross
M. Morlighem
L. M. Jong
L. M. Jong
J. L. Roberts
J. L. Roberts
D. D. Blankenship
S. Bo
M. J. Siegert
author_facet X. Cui
H. Jeofry
H. Jeofry
J. S. Greenbaum
J. S. Greenbaum
J. Guo
L. Li
L. E. Lindzey
F. A. Habbal
W. Wei
D. A. Young
N. Ross
M. Morlighem
L. M. Jong
L. M. Jong
J. L. Roberts
J. L. Roberts
D. D. Blankenship
S. Bo
M. J. Siegert
author_sort X. Cui
collection DOAJ
description <p>We present a topographic digital elevation model (DEM) for Princess Elizabeth Land (PEL), East Antarctica. The DEM covers an area of <span class="inline-formula">∼900 000</span>&thinsp;<span class="inline-formula">km<sup>2</sup></span> 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 (<span class="inline-formula">&gt;200</span>&thinsp;km wide) data-free zone. We use the mass conservation (MC) method to produce an ice thickness grid across faster flowing (<span class="inline-formula">&gt;30</span>&thinsp;<span class="inline-formula">m yr<sup>−1</sup></span>) 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&thinsp;m relative to ice surface elevations obtained from the Reference Elevation Model of Antarctica – REMA) are accessible from <a href="https://doi.org/10.5281/zenodo.4023343">https://doi.org/10.5281/zenodo.4023343</a> (Cui et al., 2020a) and <a href="https://doi.org/10.5281/zenodo.4023393">https://doi.org/10.5281/zenodo.4023393</a> (Cui et al., 2020b).</p>
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spelling doaj.art-3d085ce79f604eafb9c7d62b9f6764a82022-12-22T00:56:26ZengCopernicus PublicationsEarth System Science Data1866-35081866-35162020-11-01122765277410.5194/essd-12-2765-2020Bed topography of Princess Elizabeth Land in East AntarcticaX. Cui0H. Jeofry1H. Jeofry2J. S. Greenbaum3J. S. Greenbaum4J. Guo5L. Li6L. E. Lindzey7F. A. Habbal8W. Wei9D. A. Young10N. Ross11M. Morlighem12L. M. Jong13L. M. Jong14J. L. Roberts15J. L. Roberts16D. D. Blankenship17S. Bo18M. J. Siegert19Polar Research Institute of China, Jinqiao Road, Shanghai, ChinaFaculty of Science and Marine Environment, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, MalaysiaInstitute of Oceanography and Environment, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, MalaysiaInstitute for Geophysics, Jackson School of Geosciences, The University of Texas at Austin, Austin, Texas, USAScripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, USAPolar Research Institute of China, Jinqiao Road, Shanghai, ChinaPolar Research Institute of China, Jinqiao Road, Shanghai, ChinaDepartment of Ocean Engineering, Applied Physics Laboratory, University of Washington, Seattle, Washington, USAOden Institute for Computational Engineering and Sciences, University of Texas at Austin, Austin, Texas, USAInstitute for Geophysics, Jackson School of Geosciences, The University of Texas at Austin, Austin, Texas, USAInstitute for Geophysics, Jackson School of Geosciences, The University of Texas at Austin, Austin, Texas, USASchool of Geography, Politics and Sociology, Newcastle University, Newcastle upon Tyne, UKDepartment of Earth System Science, University of California Irvine, Irvine, California, USAAustralian Antarctic Division, Kingston, Tasmania, AustraliaInstitute for Marine and Antarctic Studies, University of Tasmania, Hobart, TasmaniaAustralian Antarctic Division, Kingston, Tasmania, AustraliaInstitute for Marine and Antarctic Studies, University of Tasmania, Hobart, TasmaniaInstitute for Geophysics, Jackson School of Geosciences, The University of Texas at Austin, Austin, Texas, USAPolar Research Institute of China, Jinqiao Road, Shanghai, ChinaGrantham Institute and Department of Earth Science and Engineering, Imperial College London, South Kensington, London, UK<p>We present a topographic digital elevation model (DEM) for Princess Elizabeth Land (PEL), East Antarctica. The DEM covers an area of <span class="inline-formula">∼900 000</span>&thinsp;<span class="inline-formula">km<sup>2</sup></span> 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 (<span class="inline-formula">&gt;200</span>&thinsp;km wide) data-free zone. We use the mass conservation (MC) method to produce an ice thickness grid across faster flowing (<span class="inline-formula">&gt;30</span>&thinsp;<span class="inline-formula">m yr<sup>−1</sup></span>) 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&thinsp;m relative to ice surface elevations obtained from the Reference Elevation Model of Antarctica – REMA) are accessible from <a href="https://doi.org/10.5281/zenodo.4023343">https://doi.org/10.5281/zenodo.4023343</a> (Cui et al., 2020a) and <a href="https://doi.org/10.5281/zenodo.4023393">https://doi.org/10.5281/zenodo.4023393</a> (Cui et al., 2020b).</p>https://essd.copernicus.org/articles/12/2765/2020/essd-12-2765-2020.pdf
spellingShingle X. Cui
H. Jeofry
H. Jeofry
J. S. Greenbaum
J. S. Greenbaum
J. Guo
L. Li
L. E. Lindzey
F. A. Habbal
W. Wei
D. A. Young
N. Ross
M. Morlighem
L. M. Jong
L. M. Jong
J. L. Roberts
J. L. Roberts
D. D. Blankenship
S. Bo
M. J. Siegert
Bed topography of Princess Elizabeth Land in East Antarctica
Earth System Science Data
title Bed topography of Princess Elizabeth Land in East Antarctica
title_full Bed topography of Princess Elizabeth Land in East Antarctica
title_fullStr Bed topography of Princess Elizabeth Land in East Antarctica
title_full_unstemmed Bed topography of Princess Elizabeth Land in East Antarctica
title_short Bed topography of Princess Elizabeth Land in East Antarctica
title_sort bed topography of princess elizabeth land in east antarctica
url https://essd.copernicus.org/articles/12/2765/2020/essd-12-2765-2020.pdf
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