The Geography of Oxia Planum 01 Geography and Quad Grids

This data set provides a grid of quads and projection information to be used for rover operations and the informal geographic naming convention for the regional geography of Oxia Planum. Both subject to update prior to the landed mission.Contents This data set contains 4 shapefiles and 1 zipped folder.OxiaPlanum_GeographicFeatures_2021_08_26. Point shapefile with the names of geographic features last updated at the date indicatedOxiaPlanum_GeographicRegions_2021_08_26. Polygon shapefile with the outlines of geographic regions fitted to the master quad grid and last updated at the date indicated.OxiaPlanum_QuadGrid_1km. Polygon shapefile of 1km quad that will be used for ExoMars rover missionOxiaPlanum_Origin_clong_335_45E_18_20N. The center point of the Oxia Planum as defined by the Rover Operations and Control center and origin point used for the Quad gridCRS_PRJ_Equirectangular_OxiaPlanum_Mars2000.zip. Zip folder containing the projection information use for all the data associated with this study. These are saved in the ESRI projection (.prj) and well know text formal (.wkt)Guide to individual filesFile name (example) Description OxiaPlanum_QuadGrid_1km.cpg Text display information OxiaPlanum_QuadGrid_1km.dbf Database file OxiaPlanum_QuadGrid_1km.prj Projection information OxiaPlanum_QuadGrid_1km.sbx Spatial index file OxiaPlanum_QuadGrid_1km.shp Shape file data OxiaPlanum_QuadGrid_1km.shp.xml Symbolisation information OxiaPlanum_QuadGrid_1km.shx Geoprocessing history These data are provided with the following projection:Equirectangular_Mars_Oxia_Planum, Projection = Equidistant_Cylindrical, Datum = D_Mars_2000 Spheroid, Central meridian = 335.45Quad grid and contoursThe quad grid was created using the ArcPro 2.7 Grid Index Features Tool (Esri, 2021). The grid is a 121 × 120 array of 1000 m × 1000 m quads labelled ‘A1’ in the South West to ‘DP120’ in the North East. The grid covers the entire CTX mosaic and the lower left corner of quad BD50 coincides with the centre of the ROCC projection system at 335.45°E 18.20°N. Topographic contours were created at 25 m intervals from a CTX DEM down sampled to 100 m/pixel, with contours shorter than 1500 m in length were removed. Contours were smoothed using the PAEK algorithm at a tolerance of 200 m (USGS & MRCTR GIS Lab, 2018).Geographic regions A common geographical division and naming system for the Oxia Planum region is needed to allow ExoMars team members to communicate efficiently. Identifying and naming geo