Identification_Information: Citation: Citation_Information: Originator: Government of Canada, Natural Resources Canada, Earth Sciences Sector, Geomatics Canada, Centre for Topographic Information Publication_Date: Unknown Title: baff_dem60.tif Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information: Publication_Place: Sherbrooke, Quebec, Canada Publisher: Government of Canada, Natural Resources Canada, Earth Sciences Sector, Centre for Topographic Information Other_Citation_Details: English, GeoBase Online_Linkage: \\W5-OTT-H000947\Projects\of5116\digital_release\data\dem\baff_dem60.tif Description: 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. Purpose: CDED1 has assumed a major role in digital mapping. The data is used in Geographic Information Systems (GIS) for land-management applications. CDED1 plays the same role as contours and relief shading on conventional paper maps but is more powerful analytically. In addition to providing estimated values of elevation points, CDED1 can be used to determine orientation and the slope of each point when used in GIS applications. CDED1 can also be used for terrain modelling, for calculating the influence of the terrain on line-of-sight, for radar imaging, for simulating flooding and similar applications. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1945-01-01 Ending_Date: PRESENT Currentness_Reference: publication date Status: Progress: In work Maintenance_and_Update_Frequency: Continually Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -82.135423 East_Bounding_Coordinate: -57.386357 North_Bounding_Coordinate: 70.643145 South_Bounding_Coordinate: 61.214800 Keywords: Theme: Theme_Keyword_Thesaurus: REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords. Theme_Keyword: Digital Elevation Model Theme_Keyword: DEM Theme_Keyword: DTM Theme_Keyword: MNE Theme_Keyword: MNT Place: Place_Keyword: Baffin Island Place_Keyword: Nunavut Place_Keyword: Canada Access_Constraints: Data are subject to the GeoBase Unrestricted Use Licence Agreement (http://www.geobase.ca - Data/Licence) Use_Constraints: Data are subject to the GeoBase Unrestricted Use Licence Agreement (http://www.geobase.ca - Data/Licence) Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Customer Support Group Contact_Organization: Government of Canada, Natural Resources Canada, Earth Sciences Sector, Geomatics Canada, Centre for Topographic Information Contact_Address: Address_Type: mailing and physical address Address: 2144, King Street West, Suite 010 City: Sherbrooke State_or_Province: Quebec Postal_Code: J1J 2E8 Country: Canada Contact_Voice_Telephone: +01-819-564-5600 / 1-800-661-2368 (Canada and USA) Contact_Facsimile_Telephone: +01-819-564-5698 Contact_Electronic_Mail_Address: ntdb@nrcan.gc.ca Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535 Data_Quality_Information: Lineage: Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 16917 Column_Count: 15507 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Lambert Conformal Conic Lambert_Conformal_Conic: Standard_Parallel: 63.116667 Standard_Parallel: 68.633333 Longitude_of_Central_Meridian: -70.500000 Latitude_of_Projection_Origin: 63.116667 False_Easting: 0.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 59.998065 Ordinate_Resolution: 60.000000 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: D_GRS_1980 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Band_1 Attribute: Attribute_Label: ObjectID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Value Attribute: Attribute_Label: Count Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: GeoBase Technical Support Contact_Organization: Government of Canada, Natural Resources Canada, Earth Sciences Sector, Geomatics Canada, Centre for Topographic Information Contact_Address: Address_Type: mailing and physical address Address: 2144, King Street West, Suite 010 City: Sherbrooke State_or_Province: Quebec Postal_Code: J1J 2E8 Country: Canada Contact_Voice_Telephone: +01-819-564-5600 / 1-800-661-2368 (Canada and USA) Contact_Facsimile_Telephone: +01-819-564-5698 Contact_Electronic_Mail_Address: supportGeobase@NRCan.gc.ca Resource_Description: Downloadable Data Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Transfer_Size: 1000.847 Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Customer Support Group Contact_Organization: Government of Canada, Natural Resources Canada, Earth Sciences Sector, Geomatics Canada, Centre for Topographic Information Contact_Address: Address_Type: mailing and physical address Address: 2144, King Street West, Suite 010 City: Sherbrooke State_or_Province: Quebec Postal_Code: J1J 2E8 Country: Canada Contact_Voice_Telephone: +01-819-564-5600 / 1-800-661-2368 (Canada and USA) Contact_Facsimile_Telephone: +01-819-564-5698 Contact_Electronic_Mail_Address: ntdb@nrcan.gc.ca Distribution_Liability: Data are subject to the GeoBase Unrestricted Use Licence Agreement (http://www.geobase.ca - in the Data section). 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