Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 20160930 Title: USGS NED Original Product Resolution AK IFSAR-Sum-L4-C170 2010 ArcGrid 2016 Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://ned.usgs.gov/ Online_Linkage: http://nationalmap.gov/viewer.html Description: Abstract: This is the Original Product Resolution (OPR) Digital Elevation Model (DEM) as provided to the USGS. This DEM is delivered in the original resolution, with the original spatial reference. All elevation units have been converted to meters. These data may be used as the source of updates to the National Elevation Dataset (NED), which serves as the elevation layer of the National Map. These data can be used by scientists and resource managers for global change research, hydrologic modeling, resource monitoring, mapping and visualization, and many other applications. Purpose: The NED serves as the elevation layer of The National Map, and provides basic elevation information for earth science studies and mapping applications in the United States. The data are utilized by the scientific and resource management communities for global change research, hydrologic modeling, resource monitoring, mapping and visualization applications. Supplemental_Information: This is an original source resolution DEM. The geographic area of coverage is described below in the Bounding Coordinates. Additional information for the NED may be found on http://ned.usgs.gov/. Data may be downloaded through The National Map Viewer: http://nationalmap.gov/viewer.html. Direct links for direct access by automated services are provided in the Distribution section of this metadata. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20100710 Ending_Date: 20120908 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -151.110576224039 East_Bounding_Coordinate: -149.849909707704 North_Bounding_Coordinate: 65.0256292626337 South_Bounding_Coordinate: 63.9736421501984 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme: Theme_Keyword_Thesaurus: NGDA Portfolio Themes Theme_Keyword: Elevation Theme: Theme_Keyword_Thesaurus: National Elevation Dataset (NED) Theme_Keyword: National Elevation Dataset Theme_Keyword: NED Theme_Keyword: Elevation Theme_Keyword: Light Detection and Ranging Theme_Keyword: LIDAR Theme_Keyword: Interferometric Synthetic Aperture Radar Theme_Keyword: IFSAR Theme_Keyword: High Resolution Theme_Keyword: Topographic Surface Theme_Keyword: Topography Theme_Keyword: Bare Earth Theme_Keyword: Hydro-Flattened Theme_Keyword: Terrain Elevation Theme_Keyword: Cartography Theme_Keyword: DEM Theme_Keyword: Digital Elevation Model Theme_Keyword: Digital Mapping Theme_Keyword: Digital Terrain Model Theme_Keyword: Geodata Theme_Keyword: GIS Theme_Keyword: Mapping Theme_Keyword: Raster Theme_Keyword: USGS Theme_Keyword: U.S. Geological Survey Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: US Place_Keyword: United States Access_Constraints: None. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the USGS Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and USGS interests. Use_Constraints: There is no guarantee or warranty concerning the accuracy of the data. Users should be aware that temporal changes may have occurred since these data were collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the USGS. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer. Browse_Graphic: Browse_Graphic_File_Name: ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/OPR/ArcGrid/USGS_NED_OPR_AK_IFSAR_Sum_L4_C170_2010_ArcGrid_2016_thumb.jpg Browse_Graphic_File_Description: Thumbnail JPG image Browse_Graphic_File_Type: JPEG Data_Set_Credit: Acknowledgement of the originating agencies would be appreciated in products derived from these data. Data_Quality_Information: Logical_Consistency_Report: Please refer to the copy of the original product metadata file within the delivered folder if one was provided. Completeness_Report: Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Please refer to the copy of the original product metadata file if one was provided. Lineage: Process_Step: Process_Description: Original project data were provided to the National Geospatial Technical Operations Center (NGTOC) in Rolla, MO and/or Denver, CO. The data were reviewed for quality and accuracy before publication. Data are provided in the original source resolution and spatial reference. Vertical units were converted to meters. Process_Date: 20160930 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 22932 Column_Count: 10907 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Albers Albers_Conical_Equal_Area: Standard_Parallel: 55 Standard_Parallel: 65 Longitude_of_Central_Meridian: -154 Latitude_of_Projection_Origin: 50 False_Easting: 0 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 0.00000000305360181585002 Ordinate_Resolution: 0.00000000305360181585002 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: GCS NAD 1983 CORS96 Ellipsoid_Name: GRS 1980 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.2572221009999052990208776 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The attribute summary can be found in the OPR Data Dictionary. Entity_and_Attribute_Detail_Citation: A link to the NED Data Dictionary describing information that is included in the spatial metadata shapefiles acquired with the DEM is provided at the end of the Metadata Information section of this document. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical Address: USGS National Geospatial Program Office Address: 12201 Sunrise Valley Drive City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747) Hours_of_Service: Monday through Friday 8:00 AM to 4:00 PM Eastern Time Zone USA Contact_Instructions: Please visit http://www.usgs.gov/ask/ to contact us. Resource_Description: Downloadable Data Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty, expressed or implied, is made by either regarding the utility of the data on any system, nor shall the act of distribution constitute any such warranty. The USGS will warranty the delivery of this product in computer-readable format and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer peripherals, or when the physical medium is delivered in damaged condition. Requests for adjustments of credit must be made within 90 days from the date of this shipment from the ordering site. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ArcGrid Transfer_Size: 000.000000 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/OPR/ArcGrid/USGS_NED_OPR_AK_IFSAR_Sum_L4_C170_2010_ArcGrid_2016.zip Fees: None. No fees are applicable for obtaining the data set. Metadata_Reference_Information: Metadata_Date: 20160930 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical Address: USGS National Geospatial Program Office Address: 12201 Sunrise Valley Drive City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747) Hours_of_Service: Monday through Friday 8:00 AM to 4:00 PM Eastern Time Zone USA Contact_Instructions: Please visit http://www.usgs.gov/ask/ to contact us. Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Extensions: Online_Linkage: http://ned.usgs.gov/metadata.html Profile_Name: National Elevation Dataset (NED) Metadata