Data · collection
Digital Elevation Model of Larsemann Hills, Antarctica
Listed in NASA Earthdata CMR
Description
A Digital Elevation Model (DEM) of the Larsemann Hills with cell size 10 metres was interpolated from input coastline, contour, spot height (point locations with an elevation attribute) and lake data from the dataset described by the metadata record 'Larsemann Hills - Mapping from aerial photography captured February 1998' with Entry ID: gis135. The input data for the islands and much of the continent coastal area is estimated to have horizontal accuracy of about 5 metres and vertical accuracy of about 5 metres.
The input data for a mainly inland area in the south-east of the data coverage is estimated to have horizontal accuracy of about 15 metres and vertical accuracy of about 15 metres. The spatial coverage for these two categories of input data is shown in a map linked to this metadata record. The interpolation was done using the Topo to Raster tool in ArcGIS.
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In the interpolation process all cells within a lake are assigned to the minimum elevation value of all cells along the shoreline. i.e. the interpolation is flat across the lake. The output DEM was clipped to the extents of the input data. The dataset available from a Related URL in this metadata record includes a text file with the parameters used with the Topo to Raster tool.
The DEM is stored in the UTM Zone 43S projection. The horizontal datum is WGS84. The vertical datum is Mean Sea Level.
The DEM was initially created as a raster in an ESRI file geodatabase. The geodatabase also includes slope, aspect and hillshade rasters derived from the DEM using ArcGIS. Slope is in degrees.
Azimuth 315 degrees and altitude 45 degrees were chosen for the hillshade. The DEM was exported using ArcGIS to two other formats which are included in the dataset available from a Related URL in this metadata record: 1 A geotiff; and 2 An ascii file in ESRI's ascii format for rasters.
Links
Get the data
- Download point for the dataset. data.aad.gov.au/eds/4886/download ↗
download · from NASA CMR
Documentation and papers
- http //data.aad.gov.au/metadata/records/gis135 ↗
Metadata record 'Larsemann Hills - Mapping from aerial photography captured February 1998'.
documentation · from NASA CMR
- data.aad.gov.au /aadc/mapcat/display_map.cfm?map_id=14866 ↗
Map showing spatial coverages and estimated planimetric and vertical accuracies of groups of input data.
documentation · from NASA CMR
- data.aad.gov.au /aadc/metadata/citation.cfm?entry_id=larsemann_hills_dem ↗
Citation reference for this metadata record and dataset.
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1611351292-AU_AADC.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1611351292-AU_AADC.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Computer · Digital Elevation Model · Digital Elevation/Terrain Model (Dem)
- Inferred from text
- Physical geography and environmental geoscience 74% · Text 75%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1611351292-AU_AADC | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3709 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (74%) |
| concepts[instrument].gcmd_instrument:computer | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/land-surface/topography/terrain-elevation/digital-elevation-terrain-model-dem | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:text | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[platform].gcmd_platform:dem | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |