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Alaska Land Cover Mapping Project

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S.G.S. EROS Alaska Field Ofice/U.S. Forest Service
Publication_Date: 19990526
Title: Alaska Land Cover Mapping Project
Edition: 1
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Anchorage AK
Publisher: USGS-EROS Alaska Field Office
Online_Linkage: <https://agdc.usgs.gov>
Description:
Abstract:
Since the early 1980's the EROS Alaska Field Office (AFO) has been involved in the acquisition, classification, and analysis of digital land cover data over the State of Alaska, and to a limited extent, northwestern Canada and Wrangle Island, Russia. The digital data currently covers approximately 77% of the land and water within the boundaries of the State of Alaska. These data are currently being made available via the AFO web site to land managers and researchers who may be interested in land cover conditions over various portions of Alaska. The land cover maps as a result of digital analysis of Landsat multispectral scanner, Landsat thematic mapper, and SPOT multispectral scanner satellite data. Some data however, are missing from the database due to data degradation on storage media or loss of data tapes, although a limited number of hard copy map products may be in existence, for example, U.S. Forest Service land cover data for southeast Alaska. The land cover data are stored online in a series of directories and are available via the web. Each directory name is indicative of the area for which the land cover data exists. Some directories connote a U.S. Geological Survey 1:250,000 quadrangle (for example, anchorage_int), while others indicate a particular project area (for example, anwr represents Arctic National Wildlife Refuge) or the agency responsible for producing the data. For example, nowitna.fws indicates that the data were produced for the U.S. Fish and Wildlife Service. Directories with an '_int' suffix denote that the data correspond to the Interim Landcover Mapping project. Each directory contains five files with the following extensions: .bil, .blw, .hdr, .prj, and .stx. As a group, one or more of the files can be read by most image analysis and GIS software packages. The .bil file contains the binary raster land cover data and the others are ASCII files. The .bil file does not contain any header or footer records, and can be easily imported into image processing software by using the information contained in the .blw and .hdr files. The .blw file provides pixel size information as well as the upper left corner coordinate. The .hdr contains number of rows and columns of the data set, as well as band format (band interleave). The .prj file gives projection information, and the .stx file gives information on minimum/maximum/ mean values of the data. Projection parameters for the data sets are either in Universal Transverse Projection (UTM) or Alaska Albers Equal Area Conic. A directory labeled lcc_clsvalues contains a series of text files giving class names for each of the land cover class values in each of the data sets. The readme.1st file contains a lookup table showing which land cover text file pertains to each land cover data set.
Purpose:
The data base provides researchers and managers a central area to obtain this information and is continuously being updated as new data become available. Access to the data may be found at <https://agdc.usgs.gov>.
Supplemental_Information:
CHUGACH NATIONAL FOREST (USFS, Markon and Williams 1996) covering the following USGS 1:250,000 - scale quadrangles

Seward Middleton Island Blying Sound Cordova Landcover Class Legend

Class Class Name ----- ---------- 1 Closed needleleaf forest 2 Open needleleaf forest 3 Needleleaf woodland 4 Closed broadleaf forest 5 Open broadleaf forest 7 Closed mixed forest 8 Open mixed forest 11 Dwarf tree 13 Closed tall shrub 14 Open tall shrub 15 Closed low shrub 16 Open low shrub 17 Dry/mesic graminoid/forb 19 Wet graminoid/forb 23 Moss 24 Lichen 25 Fresh water - aquatic 26 Brackish water - aquatic 28 Clear water 29 Turbid water 33 Bedrock/unconsolidated 35 Sand/mud 36 Ice/snow/clouds 38 Shadow 39 Sparsely vegetated

Markon, C.J., and Williams, B.E., 1996. Development of a geographic information system for the Chugach National Forest. In: Greer, J.D., ed., Remote Sensing: People in Partnership with Technology, Proceedings of the Sixth Biennial Forest Service Remote Sensing Applications Conference, Denver, CO. April 29-May 3, 1996, American Society for Photogrammetric and Remote Sensing, Bethesda, Maryland, p. 155-163.

***** Spatial Reference Information (Beg) *****

Projection Parameters

Spatial Information Raster: Number of Columns: 16393 Number of Rows: 12115 Pixel Resolution (m): 30 Data Type: byte

***** Spatial Reference Information (End) *****

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19800501
Ending_Date: 20000201
Currentness_Reference: publication date
Status:
Progress: In work
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 0
East_Bounding_Coordinate: 0
North_Bounding_Coordinate: 0
South_Bounding_Coordinate: 0
Keywords:
Theme:
Theme_Keyword_Thesaurus: EARTH SCIENCE > LAND SURFACE> Land Use/Land Cover
Theme_Keyword: Land Use/Land Cover
Place:
Place_Keyword_Thesaurus: U.S.A. > Alaska
Place_Keyword: Chugach National Forest
Temporal:
Temporal_Keyword_Thesaurus: USGS/EROS/Alaska Field Office
Temporal_Keyword: 1980 -1999
Access_Constraints: None Known
Use_Constraints:
Full acknowledgement given to data owner/producer, or the EROS Alaska Field Office
Browse_Graphic:
Browse_Graphic_File_Name: None
Browse_Graphic_File_Description: None
Browse_Graphic_File_Type: None

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Data Base Administrator
Contact_Organization: U.S.G.S EROS Alaska Field Office
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 4230 University Dr.
City: Anchorage
State_or_Province: AK
Postal_Code: 99508-4664
Country: U.S.A.
Contact_Voice_Telephone: 786-7000
Contact_Facsimile_Telephone: 907-786-7036
Contact_Electronic_Mail_Address: agdcweb@usgs.gov
Distribution_Liability:

Metadata_Reference_Information:
Metadata_Date: 19990526
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Data Base Administrator
Contact_Organization: U.S.G.S EROS Alaska Field Office
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 4230 University Dr.
City: Anchorage
State_or_Province: AK
Postal_Code: 99508-4664
Country: U.S.A.
Contact_Voice_Telephone: 786-7000
Contact_Facsimile_Telephone: 907-786-7036
Contact_Electronic_Mail_Address: agdcweb@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998


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URL: https://agdc.usgs.gov/data/usgs/erosafo/ak_lcc/metadata/chugach_nf.html
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Page Last Modified: Wednesday, 07-Dec-2016 12:20:09 AKST