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Alaska 1km Digital Elevation Model

Metadata:


Identification_Information:

Citation:
Citation_Information:
Originator: U.S. Geological Survey EROS Alaska Field Office
Publication_Date: 19961210
Title: Alaska 1km Digital Elevation Model
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey EROS Alaska Field Office
Description:
Abstract:
Digital elevation model 1km grid for Alaska, from Defense
Mapping Agency 3-arc second 1x1 degree 1:250,000 scale
Digitial Elevation Models.
Purpose: Display and analysis of terrain.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19500101
Ending_Date: None
Currentness_Reference: Publication Date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -180.0
East_Bounding_Coordinate: -116.0
North_Bounding_Coordinate: 72.0
South_Bounding_Coordinate: 51.5
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: DEM
Theme_Keyword: DTM
Theme_Keyword: elevation
Theme_Keyword: relief
Theme_Keyword: landforms
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Alaska
Access_Constraints: None
Use_Constraints: Not for use at scales greater than 1/2,500,000.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey EROS Alaska Field Office
Contact_Person:
Contact_Position:
Contact_Address:
Address_Type: mailing and physical address
Address: 4230 University Drive
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508-4664
Country: USA
Contact_Voice_Telephone: (907) 786-7020
Contact_Facsimile_Telephone: (907) 786-7036
Contact_Electronic_Mail_Address: webmaster@agdcwww.wr.usgs.gov
Hours_of_Service: Monday-Friday, 8-5, Alaska Standard Time
Native_Data_Set_Environment:
Arc/Info version 7.0.3, Pathname =


Data_Quality_Information:

Attribute_Accuracy:
Attribute_Accuracy_Report: See Vertical Accuracy.
Logical_Consistency_Report: None
Completeness_Report: None
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: 90 percent probability of 1km accuracy.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
90 percent probability of 1km accuracy. See also: http://nsdi.usgs.gov/nsdi/wais/maps/dem1deg.HTML. and http://edcwww.cr.usgs.gov/glis/hyper/guide/1_dgr_dem.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Defense Mapping Agency
Publication_Date: 19750101
Title: 1-degree Digital Elevation Models
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geologic Survey
Source_Scale_Denominator: 250000
Type_of_Source_Media: Unknown
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19500101
Source_Currentness_Reference: Publication Date
Source_Citation_Abbreviation: dma
Source_Contribution: The data set was derived from this source.
Process_Step:
Process_Description:
Convert DEMs to LAS format and merge all Alaska data into one grid. Project into Albers Equal Area and resample to 1km grid cell size. Performed by Mike Fleming, USGS EROS Alaska Field Office
Process_Date:


Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Point
Row_Count: 1992
Column_Count: 2512


Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 55.0
Standard_Parallel: 65.0
Longitude_of_Central_Meridian: -154.0
Latitude_of_Projection_Origin: 50.0
False_Easting: 0.00000
False_Northing: 0.00000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 64
Ordinate_Resolution: 64
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: NGVD29
Altitude_Resolution: 1
Altitude_Distance_Units: METERS
Altitude_Encoding_Method: Implicit coordinate


Distribution_Information:

Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey EROS Alaska Field Office
Contact_Person:
Contact_Position:
Contact_Address:
Address_Type: mailing and physical address
Address: 4230 University Drive
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508-4664
Country: USA
Contact_Voice_Telephone: (907) 786-7020
Contact_Facsimile_Telephone: (907) 786-7036
Contact_Electronic_Mail_Address: webmaster@agdcwww.wr.usgs.gov
Hours_of_Service: Monday-Friday, 8-5, Alaska Standard Time
Distribution_Liability:
Users must assume responsibility to determine the usability of this data for their purposes.


Metadata_Reference_Information:

Metadata_Date: 19961210
Metadata_Review_Date: 19961210
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey EROS Alaska Field Office
Contact_Person: Cathy Baxter
Contact_Address:
Address_Type: mailing and physical address
Address: 4230 University Drive
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508-4664
Country: USA
Contact_Voice_Telephone: (907) 786-7020
Contact_Facsimile_Telephone: (907) 786-7036
Contact_Electronic_Mail_Address: webmaster@agdcwww.wr.usgs.gov
Hours_of_Service: Monday-Friday, 8-5, Alaska Standard Time
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: 19961210


Generated by mp on Tue Dec 9 18:02:59 1997


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