Metadata for PERMAFROST
Permafrost map of Alaska
Table of Contents
Citation Information
Originator: U.S. Geological Survey EROS Alaska Field Office
Publication_Date: 19961210
Title: Permafrost map of Alaska
Geospatial_Data_Presentation_Format: map
Publication_Information
Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey EROS Alaska Field Office
Online_Linkage: http://agdcwww.wr.usgs.gov/agdc/agdc.html
Scale_Denominator: 2,500,000
Description
Abstract:
This dataset consists of a georeferenced digital map and attribute data derived
from the publication "Permafrost map of Alaska". The map is presented at a
scale of 1:2,500,000 and shows the correlation of physiographic province to
presence of permafrost across the state of Alaska.
Purpose:
The digital data were prepared under the U.S. Geological Survey Global Change
Program, Land Data Systems - Arctic Land Processes Studies for display and analysis of
terrain.
Supplemental_Information:
Procedures_Used
The linework was captured by hand digitizing the source map,
Ferrians, O.J., 1965, Permafrost map of Alaska: U.S. Geological
Survey Miscellaneous Geologic Investigations Map I-445. Scale 1:2,500,000.
The digital map was assembled and edited in ARC/INFO. The source map
projection is polyconic. It is based on the Clarke 1866 ellipsoid with a
central meridian of 150 W longitude. The data were georeferenced from
digitizer coordinates to the polyconic projection and then projected into
an Albers Equal Area projection. The coastline was taken from the U.S.
Geological Survey, 1:2,000,000 scale Digital Line Graph data (U.S.
Geological Survey, 1987). Attributes for the permafrost map were assigned.
Metadata documentation was completed in 1996.
Revisions:
This is the first digital version of the permafrost dataset.
Other_References_Cited:
Ferrians, O.J., 1965, Permafrost map of Alaska: U.S. Geological Survey
Miscellaneous Geologic Investigations Map I-445. Scale 1:2,500,000.
Time_Period_of_Content
Range_of_Dates/Times
Beginning_Date: 1965
Ending_Date: 0
Currentness_Reference:
The creation date for the digital data is unknown. Documentation of the
data occurred in 1996.
Status
Progress: Complete
Maintenance_and_Update_Frequency
Maintenance and update of the dataset will be performed as needed.
Spatial_Domain
Bounding_Coordinates
West_Bounding_Coordinate: 157.4567
East_Bounding_Coordinate: -117.2995
North_Bounding_Coordinate: 67.5777
South_Bounding_Coordinate: 49.1643
Keywords
Theme
Theme_Keyword_Thesaurus: None
Theme_Keyword: permafrost, map, Alaska
Place
Place_Keyword_Thesaurus: None
Place_Keyword: Alaska
Access_Constraints:
None
Use_Constraints:
The U.S. Geological Survey should be acknowledged as the data source in
products derived from these data. The data are general in nature and should
not be used at a scale larger than 1:2,500,000,that of the original map. The
use of these data is not restricted and may be interpreted by organizations,
agencies, units of government or others; however,they are responsible for its
appropriate application. Digital data files are periodically updated. Files
are dated and users are responsible for obtaining the latest revisions of the
data. 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 the
agency regarding the utility of the data on any other system, nor shall the act
of distribution constitute any such warranty.
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 =
Attribute_Accuracy
Attribute_Accuracy_Report:
See Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information
SDTS_Terms_Description
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 813
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 1316
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 814
Horizontal_Coordinate_System_Definition
Planar
Map_Projection:
Map_Projection_Name: ALBERS
Longitude_of_Central_Meridian: -154
Latitude_of_Projection_Origin: 50
Latitude_of_First_Standard_Parallel: 55
Latitude_of_Second_Standard_Parallel: 65
False_Easting: 0.00000
False_Northing: 0.00000
Geodetic Model
Horizontal_Datum_Name:
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6,378,206.4
Denominator_of_Flattening: 294.98
Detailed_Description
Entity_Type
Entity_Type_Label: PERMAFROST.PAT
Entity_Type_Definition: Physiographic province and presence of permafrost across Alaska
Entity_Type_Definition_Source: Ferrians, O.J., 1965, Permafrost map of Alaska
Attribute:
Attribute_Label: -
Attribute_Definition: Physiographic province and presence of permafrost across Alaska
Attribute_Definition_Source: Ferrians, O.J., 1965, Permafrost map of Alaska
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value: State of Alaska
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: AREA
Attribute_Definition:Area of poly/region in square coverage units
Attribute_Definition_Source: Computed
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Positive real numbers
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition:Perimeter of poly/region in coverage units
Attribute_Definition_Source:Computed
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Positive real numbers
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label:PERMAFROST#
Attribute_Definition:Internal feature number
Attribute_Definition_Source:Computed
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Sequential unique positive integer
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label:PERMAFROST-ID
Attribute_Definition:User-assigned feature number
Attribute_Definition_Source:User-defined
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Integer
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label:PERMAFROST
Attribute_Definition:Code for Physiographic province
Attribute_Definition_Source:Ferrians, O.J., 1965, Permafrost map of Alaska
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:11,12,13,21,22,23,24,25,31
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Entity_Type
Entity_Type_Label:PERMAFROST.AAT
Entity_Type_Definition:Attribute table of PERMAFROST.
Entity_Type_Definition_Source:Ferrians, O.J., 1965, Permafrost map of Alaska
Attribute:
Attribute_Label: -
Attribute_Definition:Attribute table of PERMAFROST.
Attribute_Definition_Source:Ferrians, O.J., 1965, Permafrost map of Alaska
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label:FNODE#
Attribute_Definition:Internal number of from-node
Attribute_Definition_Source:Computed
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Sequential unique positive integer
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label:TNODE#
Attribute_Definition:Internal number of to-node
Attribute_Definition_Source:Computed
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Sequential unique positive integer
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label:LPOLY#
Attribute_Definition:Internal number of poly to left of arc
Attribute_Definition_Source:Computed
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Sequential unique positive integer
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label:RPOLY#
Attribute_Definition:Internal number of poly to right of arc
Attribute_Definition_Source:Computed
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Sequential unique positive integer
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label:LENGTH
Attribute_Definition:Length of arc in coverage units
Attribute_Definition_Source:Computed
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Positive real numbers
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label:PERMAFROST#
Attribute_Definition:Internal feature number
Attribute_Definition_Source:Computed
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Sequential unique positive integer
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label:PERMAFROST-ID
Attribute_Definition:User-assigned feature number
Attribute_Definition_Source:User-defined
Attribute_Domain_Values
Enumerated_Domain
Enumerated_Domain_Value:Integer
Enumerated_Domain_Value_Definition
Enumerated_Domain_Value_Definition_Source:
Overview_Description
Entity_and_Attribute_Overview
Map units are closed polygons that are generalized in shape and size. They are
defined in terms of their physiographic characteristics and association with
permafrost. Each unit differs with respect to all other units and is uniquely
identified as shown on the table below.
11 Mountainous Area underlain by continuous permafrost
12 Mountainous Area underlain by discontinuous permafrost
13 Mountainous Area underlain by isolated masses of permafrost
21 Lowland and Upland Area underlain by thick permafrost
22 Lowland and Upland Area underlain by moderately thick to thin permafrost
23 Lowland and Upland Area underlain by discontinuous permafrost
24 Lowland and Upland Area underlain by numerous isolated masses of
permafrost
25 Lowland and Upland Area underlain by isolated masses of permafrost
26 Lowland and Upland Area generally free of permafrost
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_Provence: Alaska
Country: USA
Contact_Voice_Telephone: (907) 786-7020
Contact_Facsimile_Telephone: (907) 786-7036
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_Date: 19961223
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 Provence: Alaska
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: 19940608
Last modified: 96-12-23.15:20:01.Mon