LANDFIRE.AK_ASP

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 20130531
Title: LANDFIRE.AK_ASP
Edition: Stage 1 Data
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: LANDFIRE.US_ASP
Issue_Identification: LANDFIRE.US_ASP
Publication_Information:
Publication_Place: USGS EROS, Sioux Falls, South Dakota
Publisher: U.S. Geological Survey
Online_Linkage: <http://landfire.cr.usgs.gov/viewer/>
Online_Linkage: landfire.gov
Description:
Abstract:
This file is generated from NED DEM that has been clipped to the LANDFIRE boundary. The aspect grid defines downslope direction. Non-defined aspect (slope less than or =2) are assigned a value of -1. Aspect values range from 0.0 to 359.0 degrees. -9999 indicates NoData. Values have been adjusted to account for the Albers projection. The aspect grid was computed using the aspect function in ArcGIS 10.1.
Purpose:
The purpose of the aspect grid is to provide a representation of the downslope direction of the maximum rate of change from one pixel to its neighbors.
Supplemental_Information:
The National Elevation Dataset (NED) is the primary elevation data product produced and distributed by the USGS. The NED provides the best available public domain raster elevation data of the conterminous United States, Alaska, Hawaii, and territorial islands in a seamless format. The NED is derived from diverse source data, processed to a common coordinate system and unit of vertical measure. All NED data are distributed in geographic coordinates in units of decimal degrees, and in conformance with the North American Datum of 1983 (NAD 83). All elevation values are provided in units of meters, and are referenced to the North American Vertical Datum of 1988 (NAVD 88) over the conterminous United States. The vertical reference will vary in other areas. NED data are available nationally at resolutions of 1 arc-second (approx. 30 meters) and 1/3 arc-second (approx. 10 meters), and in limited areas at 1/9 arc-second (approx. 3 meters). For the LANDFIRE product the 1 arc second NED digital elevation model (DEM) was projected from Geographic to Albers and clipped out to the LANDFIRE boundary. Spatial-specific information not available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20000101
Ending_Date: present
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-179.8299135763675
East_Bounding_Coordinate:-138.75803269007818
North_Bounding_Coordinate:71.14926911648406
South_Bounding_Coordinate:50.824773478534226
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Aspect
Theme_Keyword: National Elevation Dataset
Theme_Keyword: Raster digital data
Theme_Keyword: LANDFIRE
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: Downslope Direction
Theme_Keyword: USGS
Theme_Keyword: NED
Place:
Place_Keyword_Thesaurus:
U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard 10-4,): Washington, D.C., National Institute of Standards and Technology
Place_Keyword: United States
Place_Keyword: US
Place_Keyword: U.S.
Place_Keyword: Alaska
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 1999-present
Access_Constraints: None
Use_Constraints:
None. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Wildland Fire Science, Earth Resources Observation and Science Center, U.S. Geological Survey
Contact_Position: Customer Service Representative
Contact_Address:
Address_Type: physical
Address: USGS EROS
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198-0001
Country: US
Contact_Voice_Telephone: 1-605-594-6151
Contact_Facsimile_Telephone: 1-605-594-6589
Contact_Electronic_Mail_Address: helpdesk@landfire.gov
Hours_of_Service: 0800 - 1600, CT M-F (-6h CST/-5h CDT GMT)
Security_Information:
Security_Classification_System: None
Security_Classification: Unclassified
Security_Handling_Description: None
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535

Data_Quality_Information:
Lineage:
Process_Step:
Process_Description:
. The aspect grid was computed using the aspect function in ArcGIS 10.1.
Process_Date: 20130910

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: asp
Entity_Type_Definition: Aspect
Entity_Type_Definition_Source: NED
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_Definition: Horizontal direction of a slope in degrees
Attribute_Definition_Source: National Elevation Data (NED)
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -1
Range_Domain_Maximum: 359
Attribute:
Attribute_Label: Count
Attribute_Definition: Number of pixels
Attribute_Definition_Source: NED
Attribute_Domain_Values:
Unrepresentable_Domain: Number of pixels

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Wildland Fire Science, Earth Resources Observation and Science Center, U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical
Address: 47914 252nd Street
Address: USGS EROS
City: Sioux Falls
State_or_Province: South Dakota
Postal_Code: 57198-0001
Country: US
Contact_Voice_Telephone: 1-605-594-6151
Contact_Facsimile_Telephone: 1-605-594-6589
Contact_Electronic_Mail_Address: custserv@usgs.gov
Hours_of_Service: 0800 - 1600, CT M-F (-6h CST/-5h CDT GMT)
Contact_Instructions:
The USGS point of contact is for questions relating only to the data display and download from this web site. For questions regarding data content and quality, refer to the original metadata document.
Distribution_Liability:
Although all data and software published for the DEM have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials or functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data, software, or related materials.

Metadata_Reference_Information:
Metadata_Date: 20070131
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Wildland Fire Science, Earth Resources Observation and Science Center, U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical
Address: 47914 252nd Street
Address: USGS EROS
City: Sioux Falls
State_or_Province: South Dakota
Postal_Code: 57198-0001
Country: US
Contact_Voice_Telephone: 1-605-594-6151
Contact_Facsimile_Telephone: 1-605-594-6589
Contact_Electronic_Mail_Address: custserv@usgs.gov
Hours_of_Service: 0800 - 1600, CT M-F (-6h CST/-5h CDT GMT)
Contact_Instructions:
The USGS point of contact is for questions relating only to the data display and download from this web site. For questions regarding data content and quality, refer to the original metadata document.
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Security_Information:
Metadata_Security_Classification: Unclassified

Generated by mp version 2.9.12 on Tue Sep 02 21:23:54 2014