Imperial College London

ProfessorMartinSiegert

Faculty of Natural SciencesThe Grantham Institute for Climate Change

Co-Director,Grantham Institute forClimate Change&Environment
 
 
 
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Contact

 

+44 (0)20 7594 9666m.siegert Website

 
 
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Assistant

 

Ms Gosia Gayer +44 (0)20 7594 9666

 
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Location

 

Grantham Directors OfficeSherfield BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Graham:2017:10.5194/essd-9-267-2017,
author = {Graham, F and Roberts, J and Galton-Fenzi, B and Young, D and Blankenship, D and Siegert, MJ},
doi = {10.5194/essd-9-267-2017},
journal = {Earth System Science Data},
pages = {267--279},
title = {A high-resolution synthetic bed elevation grid of the Antarctic continent},
url = {http://dx.doi.org/10.5194/essd-9-267-2017},
volume = {9},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Digital elevation models of Antarctic bed topography are smoothed and interpolated onto low-resolution ( > 1km) grids as current observed topography data are generally sparsely and unevenly sampled. This issue has potential implications for numerical simulations of ice-sheet dynamics, especially in regions prone to instability where detailed knowledge of the topography, including fine-scale roughness, is required. Here, we present a high-resolution (100m) synthetic bed elevation terrain for Antarctica, encompassing the continent, continental shelf, and seas south of 60°S. Although not identically matching observations, the synthetic bed surface – denoted as HRES – preserves topographic roughness characteristics of airborne and ground-based ice-penetrating radar data measured by the ICECAP (Investigating the Cryospheric Evolution of the Central Antarctic Plate) consortium or used to create the Bedmap1 compilation. Broad-scale ( > 5km resolution) features of the Antarctic landscape are incorporated using a low-pass filter of the Bedmap2 bed elevation data. HRES has applicability in high-resolution ice-sheet modelling studies, including investigations of the interaction between topography, ice-sheet dynamics, and hydrology, where processes are highly sensitive to bed elevations and fine-scale roughness. The data are available for download from the Australian Antarctic Data Centre (doi:10.4225/15/57464ADE22F50).
AU - Graham,F
AU - Roberts,J
AU - Galton-Fenzi,B
AU - Young,D
AU - Blankenship,D
AU - Siegert,MJ
DO - 10.5194/essd-9-267-2017
EP - 279
PY - 2017///
SN - 1866-3516
SP - 267
TI - A high-resolution synthetic bed elevation grid of the Antarctic continent
T2 - Earth System Science Data
UR - http://dx.doi.org/10.5194/essd-9-267-2017
UR - http://hdl.handle.net/10044/1/47944
VL - 9
ER -