| Title | Digital elevation model and shaded relief map |
| Download | Download (whole publication) |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Geomatics Canada |
| Source | Digital geoscience atlas of Baffin Island (south of 70°N and east of 80°W), Nunavut; by St-Onge, M R; Ford, A; Henderson, I; Geological Survey of Canada, Open File 5116, 2007., https://doi.org/10.4095/223351  Open Access |
| Links | Metadata - Métadonnées 1
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| Links | Metadata - Métadonnées 2
|
| Links | Erratum
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| Year | 2007 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Map Info. | topographic, digital elevation model, 1:50,000 |
| Map Info. | topographic, digital elevation model, 1:250,000 |
| Map Info. | topographic, shaded relief, 1:50,000 |
| Map Info. | topographic, shaded relief, 1:250,000 |
| Media | DVD; digital; on-line |
| Related | This publication is contained in Digital geoscience atlas of
Baffin Island (south of 70°N and east of 80°W), Nunavut |
| File format | shp; txt; xml; pdf |
| Province | Nunavut |
| NTS | 15M; 16D; 16E; 16K; 16L; 16M; 25G; 25H; 25I; 25J; 25K; 25L; 25M; 25N; 25O; 25P; 26; 27A; 27B; 27C; 27D; 35M; 35N; 35O; 35P; 36; 37A; 37B; 37C; 37D |
| Area | Baffin Island |
| Lat/Long WENS | -80.0000 -60.0000 70.0000 61.0000 |
| Subjects | general geology; compilation; topography; digital terrain modelling |
| Released | 2007 01 29 |
| Abstract | The Canadian Digital Elevation Data, Level 1 (CDED1) consists of an ordered array of ground elevations at regularly spaced intervals. The CDED1 is based on National Topographic Data Base (NTDB) digital
files at scales of 1:50 000 and 1:250 000 or various scaled positional data acquired from the provinces, according to the National Topographic System (NTS).
The coverage for every file corresponds to half an NTS map, which means that there are
western and eastern parts to the CDED1 for each NTS map. The grid spacing is based on geographic coordinates at a maximum and minimum resolution of 0.75 and 3 arc seconds for the 1:50 000, and 3 and 12 arc seconds for the 1:250 000 respectively,
depending on latitude. A CDED1 file consists of elevation data recorded in metres relative to Mean Sea Level (MSL) based on the North American Datum 1983 (NAD83) horizontal reference datum. The Centre for Topographic Information (CTI) jointly
produces the CDED1 with federal and provincial government agencies and the private sector, using terrain-modelling software.
CDED1 files are delivered in ASCII format for either DOS or UNIX operating systems and are available via the File Transfer
Protocol (FTP). The data should be compatible with all translators designed for the United States Geological Survey (USGS) Digital Terrain Elevation Data (DTED). The files are compressed using the PKZIP compression software.
The shaded relief
image is created from the The Canadian Digital Elevation Data, Level 1 (CDED1) which consists of an ordered array of ground elevations at regularly spaced intervals. The CDED1 is based on National Topographic Data Base (NTDB) digital files at scales
of 1:50 000 and 1:250 000 or various scaled positional data acquired from the provinces, according to the National Topographic System (NTS). The shaded relief image gives a simulated appearance of the sun shining on the terrane at a specific azimuth
and altitude. |
| GEOSCAN ID | 223351 |
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