7.5-minute Digital Elevation Model (10 meter resolution)

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Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey EROS Data Center
Publication_Date: 1999
Title: 7.5-minute Digital Elevation Model (10 meter resolution)
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: U. S. Geological Survey
Online_Linkage: <URL:http://www.sdvc.uwyo.edu/24k/dem10.html>
Online_Linkage: <URL:http://edcwww.cr.usgs.gov/glis/hyper/guide/usgs_dem>

Description:
Abstract:
USGS Digital Elevation Model (DEM) data files are digital representations of cartographic information in a raster form. DEMs consist of a sampled array of elevations for a number of ground positions at regularly spaced intervals. These digital cartographic/geographic data files are produced by the U.S. Geological Survey (USGS) as part of the National Mapping Program.

Purpose:
Geospatial elevation data are utilized by the scientific and resource management communities for global change research, hydrologic modeling, resource monitoring, mapping, and visualization applications.

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1999
Ending_Date: 2001
Currentness_Reference: publication date of source maps
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -111.36
East_Bounding_Coordinate: -104
North_Bounding_Coordinate: 45.0
South_Bounding_Coordinate: 41.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: DEM
Theme_Keyword: 10 meter
Theme_Keyword: digital elevation model
Theme_Keyword: digital terrain model
Theme_Keyword: hypsography
Theme_Keyword: altitude
Theme_Keyword: height
Theme_Keyword: contour line
Theme_Keyword: digital contours
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Field Center
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Wyoming
Place_Keyword: North America
Place_Keyword: United States

Access_Constraints: None

Use_Constraints: None.

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Data Manager
Contact_Organization: Spatial Data and Visualization Center
Contact_Address:
Address_Type: mailing address
Address: Box 4008 University Station
City: Laramie
State_or_Province: Wyoming
Postal_Code: 82071
Country: USA
Contact_Voice_Telephone: 307-766-2751
Contact_Electronic_Mail_Address: n/a
Hours_of_Service: 8:00 - 5:00 MST

Native_Data_Set_Environment:
Stored in USGS DEM format and in Arc/Info 7.04 software as an export (.e00) file.

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: not yet available

Logical_Consistency_Report: not yet available
Completeness_Report: not yet available
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Not available yet. Assumed to be the most accurate of all the USGS DEM products
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: not available yet

Lineage:
Process_Step:
Process_Description:
Digital Elevation Model (10 meter resolution) were downloaded from www.MapMart.com (originating at USGS EROS Date Center) in SDTS data format in UTM, referenced to NAD 27, Clarke 1866. These data were then converted to ESRI ArcGIS GRID format using the SDTS conversion tool within ESRI ArcGIS Toolbox. The grids were then reprojected from UTM, NAD27 to UTM, NAD83. Twelve quadrangles were downloaded: Meadowville, Laketown, Sage Creek, Garden City, Bear Lake South, Sheppen Creek, Saint Charles, Bear Lake North, Pegrem Creek, Paris, Dingle, and Pegrem. The ESRI ArcGIS MERGE command was used to merged all of the reprojected grids into one composite grid. The ESRI ArcGrid command, sample, was then used to export the composite grid as an x,y,z file.
Process_Date: 2003
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane F. Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-457-2311
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Process_Step:
Process_Description:
All values less than 1806 meters were removed from the xyz file using the UNIX 'awk' command. The xyz file was then imported into Interactive Visualization Systems (IVS) DMAGIC program. The data were regridded within DMAGIC at the default values (10 meter). The data were then saved as DMAGIC .geo and .dtm files. The DMAGIC Shade program was used to assign a color map to the .dtm file generating a .shade file. The .dtm, .geo, and .shade files were then combined to produce a .sd, or Fledermaus object file. The .sd file was then imported into Fledermaus to view the data in three dimensions. The 'Create Map Sheet' program within Fledermaus was then used to create a grayscale GEOTIFF of the 10 meter DEM. The GEOTIFF was then imported into ArcView. The resulting grid cell size of the GEOTIFF is ~ 15 meters.
Process_Date: 2003
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane F. Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-457-2311
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: raster
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 12
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: .09996
Longitude_of_Central_Meridian: -111
Latitude_of_Projection_Origin: 0.0
False_Easting: 0.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 10
Ordinate_Resolution: 10
Planar_Distance_Units: meters
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The digital elevation model is composed of a 6- character integer raster representing a gridded form of a topographic map hypsography overlay, with a value in meters. In Wyoming, elevations range from approximately 900-4200 meters.

Entity_and_Attribute_Detail_Citation:
U.S.Department of the Interior, U.S. Geological Survey, 1992, Standards for digital elevation models: Reston, VA,

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Data Manager
Contact_Organization: Spatial Data and Visualization Center
Contact_Address:
Address_Type: mailing address
Address: Box 4008 University Station
City: Laramie
State_or_Province: Wyoming
Country: USA
Postal_Code: 82071
Contact_Voice_Telephone: 307-766-2751
Contact_Electronic_Mail_Address: n/a
Distribution_Liability:
The distributor shall not be held liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate used described in this metadata document.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE (Arc/Info export)
Format_Version_Number: 7.0.4
Format_Version_Date: 1995
File_Decompression_Technique: Export file was created using defaults, no compression
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: ftp.sdvc.uwyo.edu or <http://www.sdvc.uwyo.edu/clearinghouse>
Access_Instructions: <http://www.sdvc.uwyo.edu/clearinghouse/howto.html>
Online_Computer_and_Operating_System:
Both the ftp and WWW server which this data is available from is a Silicon Graphics Challenge server, running the IRIX 6.2 UNIX operating system.
Fees:
No fees are required for downloading the data that is on-line. Some fees may be required to cover costs of tapes if data is required on tape media.

Metadata_Reference_Information:
Metadata_Date: 20000831
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Margo Berendsen
Contact_Address:
Address_Type: mailing address
Address: Box 4008 University Station
City: Laramie
State_or_Province: Wyoming
Postal_Code: 82071
Country: USA
Contact_Voice_Telephone: 307-766-2751
Contact_Electronic_Mail_Address: meh@uwyo.edu
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.7.17 on Wed Jul 02 14:25:29 2003