@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} }
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 -
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