Metadata: Identification_Information: Citation: Citation_Information: Originator: Reger, R.D. Originator: Hubbard, T.D. Publication_Date: 2010 Title: Reconnaissance interpretation of 1978-1983 permafrost, Alaska Highway Corridor, Robertson River to Tetlin Junction, Alaska Geospatial_Data_Presentation_Form: document, map sheets and vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2009-6C Publication_Information: Publication_Place: Fairbanks, Alaska - USA Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Other_Citation_Details: 4 sheets, 1:63,360 scale Online_Linkage: http://dx.doi.org/10.14509/19743 Description: Abstract: During 2008 the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted reconnaissance interpretive mapping of permafrost in Alaska Highway Corridor Segment 2, a 12-mi-wide (19.3-km-wide) corridor that straddles the Alaska Highway through the upper Tanana River valley from the eastern boundary of the Mt. Hayes Quadrangle to the eastern edge of the Tanacross Quadrangle. This work was an extension of permafrost mapping done in Alaska Highway Corridor Segment 1 from Delta Junction to Dot Lake in the Big Delta and Mt. Hayes Quadrangles during 2006-2007. Primarily, we inferred the extent of permafrost and ice content by interpreting ~1:65,000-scale, false-color infrared aerial photographs taken in July 1978, August 1980, and July 1983. Purpose: This report and map are a part of ADGGS's Alaska Natural Gas Pipeline Geology and Geohazards project, funded by the state legislature, showing an interpretive evaluation of the presence or absence of permafrost in the study area. The study was done in anticipation of the proposed natural gas pipeline along the Alaska Highway corridor, as a preliminary look at the expected distribution of permafrost based on air photo interpretation. The work was designed to serve as the springboard for the detailed work which would be required if a pipeline were to be built along this corridor. Because of the dearth of subsurface data in most of the map area, our permafrost designations should be considered tentative until validated by multi-year ground-temperature measurements at a depth below the level of annual temperature variation. Supplemental_Information: The layers listed below are present as ArcGIS shape files. To enhance print quality, this publication utilized a vector topography data set. The topography data set is not included with this release. Attribute information for the following layers (entities) is included in this metadata file under the "Entity_and_Attribute_Information" section. Basic unit information is also included in the unit code set file "PIR2009-6C_codeset.pdf". Each layer is listed and described in detail under its own heading starting "Entity_Type_Label." Layers include: >permafrostpolygons permafrost map unit polygons >pingos locations of pingos >report_locality locations of site discussed in the text >profile_line locations of profile discussed in the text >outline outline shape of the study area Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 197807 Single_Date/Time: Calendar_Date: 198008 Single_Date/Time: Calendar_Date: 198307 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -144.002788 East_Bounding_Coordinate: -142.501971 North_Bounding_Coordinate: 63.74078414 South_Bounding_Coordinate: 63.16575975 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Climate Change Theme_Keyword: Engineering Geology Theme_Keyword: Gasline Theme_Keyword: Geologic Hazards Theme_Keyword: Geologic Map Theme_Keyword: Geological Process Theme_Keyword: Geology Theme_Keyword: Ice Theme_Keyword: Permafrost Theme_Keyword: Pingos Theme_Keyword: Proposed Natural Gas Pipeline Theme_Keyword: Remote Sensing Theme_Keyword: Subsidence Theme_Keyword: Thaw Lakes Theme_Keyword: Transportation Corridor Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Alaska Highway Corridor Place_Keyword: Alaska Range Place_Keyword: Alaska, State of Place_Keyword: Dot Lake Place_Keyword: Robertson River Place_Keyword: Tanacross Place_Keyword: Tanacross Quadrangle Place_Keyword: Taylor Highway Place_Keyword: Tok Place_Keyword: Tok River Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: Pleistocene Temporal_Keyword: Quaternary Temporal_Keyword: Holocene Access_Constraints: This report, map, and/or dataset are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below). Use_Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Contact_Position: GIS Data Manager/Cartographer Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Contact_Voice_Telephone: (907) 451-5029 Contact_Voice_Telephone: (907) 451-5020 Contact_Facsimile_Telephone: (907) 451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Contact_Instructions: You may view our web site at http://www.dggs.alaska.gov for the latest information on available data. Please e-mail your questions and data requests when possible since our web site and e-mail address will remain current even if our phone number and mailing address change. Data_Set_Credit: This research was supported by Alaska State Capital Improvement Projects funding. The authors gratefully acknowledge the helpful review by Rod Combellick, and able cartographic assistance by Patricia Gallagher, Garrett Speeter, and Gail Davidson. Much of the work was carried out under the direction of Diana Solie and her leadership was greatly appreciated. Native_Data_Set_Environment: Microsoft Windows XP SP2, ArcGIS 9.+ Cross_Reference: Citation_Information: Originator: Reger, R.D. Originator: Hubbard, T.D. Originator: Carver, G.C. Publication_Date: 2010 Title: Surficial geology of Alaska Highway Corridor, Robertson River to Tetlin Junction, Alaska Geospatial_Data_Presentation_Form: document, map sheets and vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2009-6A Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Other_Citation_Details: 4 sheets. 1:63,360 scale Cross_Reference: Citation_Information: Originator: Reger, R.D. Originator: Hubbard, T.D. Publication_Date: 2010 Title: Engineering-geologic map of the Alaska Highway Corridor, Robertson River to Tetlin Junction, Alaska Geospatial_Data_Presentation_Form: map sheets, table and vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2009-6B Publication_Information: Publication_Place: Fairbanks, Alaska - USA Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Other_Citation_Details: 4 sheets, 1:63,360 scale Cross_Reference: Citation_Information: Originator: Reger, R.D. Originator: Stevens, D.S.P. Originator: Solie, D.N. Publication_Date: 2008 Title: Surficial-geologic map, Alaska Highway Corridor, Delta Junction to Dot Lake, Alaska Geospatial_Data_Presentation_Form: document, map sheets and vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2008-3A Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 2 sheets, scale 1:63,360 Cross_Reference: Citation_Information: Originator: Reger, R.D. Originator: Solie, D.N. Publication_Date: 2008 Title: Engineering-geologic map, Alaska Highway Corridor, Delta Junction to Dot Lake, Alaska Geospatial_Data_Presentation_Form: document, map sheet and vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2008-3B Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 2 sheets, scale 1:63,360 Cross_Reference: Citation_Information: Originator: Reger, R.D. Originator: Solie, D.N. Publication_Date: 2008 Title: Reconnaissance interpretation of permafrost, Alaska Highway Corridor, Delta Junction to Dot Lake, Alaska Geospatial_Data_Presentation_Form: document, map sheets and vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2008-3C Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Other_Citation_Details: 10 p., 2 sheets, scale 1:63,360 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: This dataset utilizes ~1:65,000-scale, false-color infrared aerial photographs taken in July 1978, August 1980, and July 1983 to infer permafrost and ice content boundaries. This report uses the definition of permafrost as rock or soil that remains continuously colder than 0 degrees C (32 degrees F) for two years or longer. The presence or former presence of permafrost and the ground-ice content were inferred from several indicators, including vegetation, slope and aspect, landform, soil type, local drainage, and terrain features, such as open-system pingos, polygonal ground, and thermokarst pits, gullies, and ponds (see lineage reference - Kreig and Reger, 1982). Permafrost classifications in areas that were burned just prior to aerial photography dates are less reliable than in unburned areas because the vegetation was destroyed or significantly altered and, in these areas, interpretation of permafrost was based only on landform and setting, which are less diagnostic than vegetation. During the 2008 field season we excavated and examined soil pits at selected locations to ground check unit descriptions and contacts. Because of the dearth of subsurface data in most of the map area, our permafrost designations should be considered tentative until validated by multi-year ground-temperature measurements at a depth below the level of annual temperature variation. To check attribute accuracy of the digital files we visually compared the original compilation against test plots of the files and corrected discrepancies between the digital geospatial dataset and the original analog as needed. The geologic interpretations presented in this report have undergone two technical reviews by a geologist familiar with the subject of the report and the geology of the map area. We incorporated the reviewer's suggestions into the final draft when deemed appropriate. Logical_Consistency_Report: Polygon topology is present and clean on the original geospatial dataset. All polygon features were topologically validated using the ESRI ArcGIS 9.+ software prior to export to shape file format. The logical consistency of the point files has been visually checked but not systematically verified. Completeness_Report: The shapefiles in this dataset designate ice content, location, and presence of permafrost and pingos discussed in the report. The data set utilizes field observations and air photo interpretations to locate and characterize the permafrost extent and features. It includes geospatial information about units traceable on air photos at a scale of ~1:65000 and/or in the field. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The permafrost interpretations were first hand-drawn, using a magnifying stereoscope, onto acetate air-photo overlays at the scale of the air-photos (approximately inch-to-the-mile). The accuracy of the map unit boundary and point locations varies due to the scale and interpretive nature of the mapping and pen line width of approximately 0.001 meter which is equivalent to approximately 1.5 meters on the ground. The hand drawn map unit boundaries and point locations are expected to be accurate to at least 150 meters. Following interpretation, acetate overlays were then individually scanned and orthorectified, using Orthomapper, v. 3.6, and georeferenced. The air-photos were orthorectified, photomosaiced and georeferenced. Permafrost unit and point locations boundaries were digitized on-screen into ArcGIS from the orthorectified overlays at a scale more detailed than 1:63,360, using a combination of a USGS topographic 1:63.360 map layer and the air-photo photomosaic layer to verify the position of the lines and points. Map error is induced by: (1) Scanning and orthorectifying air photos and overlays. The digitizing RMS error (30 control points on a regular grid have an average RMS error of 14.0 meters on the ground; individual control point error ranges from 2.9 to 24.0 meters on the ground) 2) Onscreen digitizing from orthorectified overlays. The accuracy of the human operator digitizing polylines and point localities is related to the accuracy of interpretations from the orthorectified photos and overlays. Total horizontal error in the map unit boundaries is estimated to be less than 175 meters. Locations on the map that are discussed in the text were recorded using a Garmin GPS model 76CSx and their accuracy is related to horizontal error of the GPS which is 4 meters or less. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Kreig, R.A. Originator: Reger, R.D. Publication_Date: 1982 Title: Air-photo analysis and summary of landform and soil properties along the route of the Trans-Alaska Pipeline System Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Geologic Report Issue_Identification: GR 66 Publication_Information: Publication_Place: Fairbanks, Alaska Publisher: Alaska Division of Geological & Geophysical Surveys Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1982 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Kreig and Reger, 1982 Source_Contribution: This publication served as a guide for interpretation of aerial photographs for surficial deposits. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1948 Title: Tanacross A-4 Quadrangle Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: 1 sheet Source_Scale_Denominator: 63360 Type_of_Source_Media: All Topo software Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1948 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS Tanacross A-4, 1948 Source_Contribution: base map Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1949 Title: Tanacross B-4 Quadrangle Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: 1 sheet Source_Scale_Denominator: 63360 Type_of_Source_Media: All Topo software Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1949 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS Tanacross B-4, 1949 Source_Contribution: base map Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1948 Title: Tanacross B-5 Quadrangle Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:63,360 Source_Scale_Denominator: 63360 Type_of_Source_Media: All Topo software Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1948 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS Tanacross B-5, 1948 Source_Contribution: base map Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1949 Title: Tanacross B-6 Quadrangle Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:63,360 Source_Scale_Denominator: 63360 Type_of_Source_Media: All Topo software Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1949 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS Tanacross B-6, 1949 Source_Contribution: base map Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1955 Title: Tanacross C-6 Quadrangle Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:63,360 Source_Scale_Denominator: 63360 Type_of_Source_Media: All Topo software Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1955 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS Tanacross C-6, 1955 Source_Contribution: base map Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1978 Title: Alaska High Altitude Aerial Photography Program Geospatial_Data_Presentation_Form: prints and digital files Publication_Information: Publication_Place: unknown Publisher: U. S. Geological Survey Source_Scale_Denominator: 65000 Type_of_Source_Media: photographic print Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 197807 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: AHAP Aerial Photography Source_Contribution: aerial photography used in map unit interpretation Source_Information: Source_Citation: Citation_Information: Originator: Black, R.F. Publication_Date: 1976 Title: Periglacial features indicative of permafrost- Ice and soil wedges Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Quaternary Research Issue_Identification: v. 6, No. 1 Other_Citation_Details: p. 3-26 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1976 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Black, 1976 Source_Contribution: Contains information about features indicative of permafrost Source_Information: Source_Citation: Citation_Information: Originator: Ferrians, O.J., Jr. Publication_Date: 1965 Title: Permafrost map of Alaska Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Miscellaneous Geologic Investigations Map Issue_Identification: I-445 Publication_Information: Publication_Place: Menlo Park, CA, USA Publisher: U.S. Geological Survey Other_Citation_Details: 1 map sheet, scale 1:2,500,000 Source_Scale_Denominator: 2500000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1965 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Ferrians, 1965 Source_Contribution: Generalized permafrost map of Alaska Source_Information: Source_Citation: Citation_Information: Originator: Ferrians, O.J. Originator: Kachadoorian, R. Originator: Greene, G.W. Publication_Date: 1969 Title: Permafrost and related engineering problems in Alaska Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Geological Survey Professional Paper Issue_Identification: P 678 Other_Citation_Details: 37 p. Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1969 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Ferrians and others, 1969 Source_Contribution: Contains information about permafrost as it relates to engineering problems Source_Information: Source_Citation: Citation_Information: Originator: Pewe, T. L. Publication_Date: 1975 Title: Quaternary Geology of Alaska Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Geological Survey Profession Paper Issue_Identification: P 835 Other_Citation_Details: 145 p Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1975 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Pewe, 1975 Source_Contribution: Contains information about the Quaternary in Alaska Source_Information: Source_Citation: Citation_Information: Originator: Reger, R.D. Originator: Stevens, D.S.P. Originator: Solie, D.N. Publication_Date: 2008 Title: Reconnaissance interpretation of permafrost, Alaska Highway Corridor, Delta junction to Dot lake, Alaska Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2008-3C Publication_Information: Publication_Place: Fairbanks, AK Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 2 map sheets, scale 1:63,360 Source_Scale_Denominator: 63360 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2008 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Reger and others, 2008 Source_Contribution: contains information about interpreted permafrost in adjoining map area. Source_Information: Source_Citation: Citation_Information: Originator: Brown, J. Originator: Ferrians, O.J. Jr. Originator: Heginbottom, J.A. Originator: Melnikov, E.S. Publication_Date: 1997 Title: Circum-arctic map of permafrost and ground-ice conditions Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Geological Survey Circum-pacific Map Issue_Identification: CP-45 Other_Citation_Details: 1 map sheet, Scale 1:2,500,000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1997 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Brown and others, 1997 Source_Contribution: Contains information about permafrost and ground ice conditions in the circum arctic region Process_Step: Process_Description: Aerial photograph interpretation and compilation of existing work. Geologic data from published and unpublished mapping of the target region and adjacent regions were compiled. Stereo pairs of ~1:65,000-scale, false-color infrared aerial photographs taken in July 1978, August 1980, and July 1983 were used to interpret the presence and condition of permafrost. Interpreted proxy data include vegetation, slope and aspect, landforms, geology, local drainage, and terrain features. Unit boundaries were drawn by hand onto acetate overlays, using a magnifying stereoscope. Overlays were registered to aerial photos using tick marks on the photos. The air-photos and scanned overlays were orthorectified, photomosaiced and georeferencedusing Orthomapper 3.6. Permafrost unit boundaries were digitized on-screen into ArcGIS 9+ from the orthorectified overlays at a scale more detailed than 1:63,360, using a combination of a USGS topographic 1:63.360 map layer and the air-photo photomosaic layer to verify the position of the lines. Permafrost map polygons and lines were then edited and attributed using ArcMap 9+ Source_Used_Citation_Abbreviation: Black, 1976 Source_Used_Citation_Abbreviation: Brown and others, 1997 Source_Used_Citation_Abbreviation: Ferrians, 1965 Source_Used_Citation_Abbreviation: Ferrians and others, 1969 Source_Used_Citation_Abbreviation: Kreig and Reger, 1982 Source_Used_Citation_Abbreviation: Pewe, 1975 Source_Used_Citation_Abbreviation: Reger and others, 2008 Source_Used_Citation_Abbreviation: USGS Tanacross A-4, 1948 Source_Used_Citation_Abbreviation: USGS Tanacross B-4, 1949 Source_Used_Citation_Abbreviation: USGS Tanacross B-5, 1948 Source_Used_Citation_Abbreviation: USGS Tanacross B-6, 1949 Source_Used_Citation_Abbreviation: USGS Tanacross C-6, 1949 Source_Used_Citation_Abbreviation: AHAP Aerial Photography Process_Date: 2008 Process_Step: Process_Description: Fieldwork - In July-August 2008, to verify aerial photo interpretations, localities of varying permafrost conditions were visited in the field to observe surface conditions. In addition, several pits were dug using shovels to maximum depth of 1.5 meters to observe soil profiles and whether frozen soil was present. Process_Date: 2008 Process_Step: Process_Description: Map compilation - The permafrost map was compiled using field notes from fieldwork process step (above), all known geologic data from previous work in the general region and by additional aerial photograph interpretation. Changes to unit boundaries, after field work, were completed in ArcGIS 9+. GIS files were exported and Adobe Illustrator was used to create the final map layout. Process_Date: 2009 Process_Step: Process_Description: Metadata creation - Metadata were assembled by T.D. Hubbard to FGDC Standards using Metavist 1.2, DGGS 7.05, a data entry program for FGDC metadata with XML output. Process_Date: 2009 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.00000 Latitude_of_Projection_Origin: 0 False_Easting: 500000.0 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: permafrostpolygons Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.00000 Latitude_of_Projection_Origin: 0 False_Easting: 500000.0 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.0000001 Ordinate_Resolution: 0.0000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: pingos Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.00000 Latitude_of_Projection_Origin: 0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.0000001 Ordinate_Resolution: 0.0000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: outline Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141 Latitude_of_Projection_Origin: 0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.0000001 Ordinate_Resolution: 0.0000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: report_locality Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -180.0 Latitude_of_Projection_Origin: 0 False_Easting: 500000.0 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000000001 Ordinate_Resolution: 0.00000000000000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: profile_line Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Attribute_Layer_Name: permafrostpolygons Entity_Type_Label: permafrostpolygons.shp Entity_Type_Definition: permafrost map unit polygons Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: MapUnit Attribute_Definition: Label of map unit shown on map signifying interpreted extent and amount of permafrost within polygon. Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Codeset_Domain: Codeset_Name: PIR2009-6C_codeset.pdf Codeset_Source: Alaska Division of Geological & Geophysical Surveys http://www.dggs.alaska.gov/metadata/PIR2009-3C_codeset.pdf Detailed_Description: Entity_Type: Entity_Attribute_Layer_Name: report_locality Entity_Type_Label: report_locality.shp Entity_Type_Definition: Points identifying locations discussed in the report (PIR 2009-6c) Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: locality Attribute_Definition: Locality label as shown on map Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: A Attribute: Attribute_Label: LocLat Attribute_Definition: Latitude of locality Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys, see Spatial_Reference_Information Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: N 63° 19' 9.1" Enumerated_Domain_Value_Definition: Latitude location of locality A (degrees, minutes, seconds) Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: LocLong Attribute_Definition: Longitude of locality Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys, see Spatial_Reference_Information Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: W 142° 37' 46.6" Enumerated_Domain_Value_Definition: Longitude location of point A (degrees, minutes, seconds). Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: LocNorth Attribute_Definition: northing Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys, see Spatial_Reference_Information Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 7021993.074 Enumerated_Domain_Value_Definition: Northing coordinate for location of point A (meters). Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: LocEast Attribute_Definition: easting Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys, see Spatial_Reference_Information Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 418361.832 Enumerated_Domain_Value_Definition: Easting coordinate for location of point A (meters). Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: Quadrangle Attribute_Definition: quadrangle Attribute_Definition_Source: USGS topographic quadrangle sheets Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Tanacross B-4 Quadrangle Enumerated_Domain_Value_Definition: Quadrangle location where point is located Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Attribute_Layer_Name: pingos Entity_Type_Label: pingos.shp Entity_Type_Definition: point location of pingos Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: Id Attribute_Definition: symbol identifying location of pingo on map Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: pingos shown on map Detailed_Description: Entity_Type: Entity_Attribute_Layer_Name: outline Entity_Type_Label: outline.shp Entity_Type_Definition: Polygon outlining boundary of map area Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: shape Attribute_Definition: shape of polygon outlining map boundary Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: shape of map area Detailed_Description: Entity_Type: Entity_Attribute_Layer_Name: profile line Entity_Type_Label: profile_line.shp Entity_Type_Definition: profile line discussed in text Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: shape Attribute_Definition: line showing location of profile discussed in text Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: profile line discussed in text Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Contact_Position: Natural Resource Technician Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: 907-451-5020 Contact_TDD/TTY_Telephone: None available. Contact_Facsimile_Telephone: 907-451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please view our web site (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Resource_Description: Preliminary Interpretive Report 2009-6C Distribution_Liability: The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product. Standard_Order_Process: Non-digital_Form: Current publication is available on paper. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Fees: Printed publication can be purchased for $XX.00 (contact information below) plus shipping if mailed. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: PDF Format_Version_Number: 1.6 File_Decompression_Technique: No compression applied Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://dx.doi.org/10.14509/19743 Digital_Form: Digital_Transfer_Information: Format_Name: ArcGIS Shapefile Format_Version_Number: ESRI ArcGIS 9.x File_Decompression_Technique: No compression applied Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://dx.doi.org/10.14509/19743 Fees: Digital files on CD-ROM are available for $10.00 (contact information below). No fees charged for downloaded files. Ordering_Instructions: Order by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). The DGGS web site (http://www.dggs.alaska.gov/) has a list of electronic data available and an order form that can be printed. Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround: Digital downloads: less than 30 minutes for most files. Offline CD/DVD-ROMs: 1-2 weeks unless special arrangements are made and an express fee is paid. Technical_Prerequisites: Please check the MapInfo web site (http://www.mapinfo.com/) for the latest documentation on importing ESRI shape files. Metadata_Reference_Information: Metadata_Date: 20090930 Metadata_Review_Date: 20091005 Metadata_Future_Review_Date: 20100513 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical address Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: 907-451-5039 Contact_Facsimile_Telephone: 907-451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays. Contact_Instructions: Please contact us through the e-mail address above whenever possible. Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.