A bathymetric and topographic compilation of the South Sandwich Island Volcanic Arc

A bathymetric and topographic compilation of the South Sandwich Islands
Volcanic Arc (55.1 S - 61.9 S, 24 W - 32 W) constructed in 2014,
comprising multiple data sources. The data are available as a 200m
resolution GeoTIFF grid of elevation data. The bathymetric compilation was
constructed in ArcGIS 10.0 using a hierarchical system of data priority,
gridded using the Topogrid function and cleaned using both manual and
semi-automated methods. This was then merged with terrestrial elevations
constructed from cleaned raw ASTER GDEM grids supplemented by coastlines and
form-lines taken from archival sketch-maps to produce a full hypsometric
elevation model. The dataset was compiled as part of the Geological Long Term
Mapping and Survey component of the British Antarctic Survey and forms the
basis of a map within the BAS GEOMAP 2 series.