Identification_Information: Citation: Citation_Information: Originator: Emond, A.M. Originator: Little, L.M. Originator: Graham, G.R.C. Originator: Minsley, B.J. Originator: CGG Publication_Date: 2018 Title: Airborne electromagnetic and magnetic survey, Yukon Crossing, interior Alaska Geospatial_Data_Presentation_Form: digital data Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2016-4 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 3 p. Online_Linkage: http://doi.org/10.14509/29682 Description: Abstract: The Alaska Division of Geological & Geophysical Surveys managed the collections of magnetic and frequency domain electromagnetic data to increase geologic understanding of the Yukon Crossing area surrounding mile 56 of the Dalton Highway, interior Alaska. The 162-square-kilometer survey was flown February 25th to March 1st, 2016. The data were collected by CGG using the RESOLVE airborne geophysical survey system with line spacing of: 400 meters (m), or 80 min a smaller area surrounding the Yukon River, and three custom lines along theY ukon River. The data were measured 30 m above the ground surface using a helicopter-towed sensor platform ('bird') on a 30-m-long line. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/29682. Purpose: These geophysical data were collected for the Alaska Department of Transportation & Public Facilities to increase the geologic understanding of the Yukon Crossing area. The Dalton Highway and the Trans Alaska Pipeline cross the Yukon River at Yukon Crossing. Improving understanding of this area allows for informed infrastructure management and development. Supplemental_Information: >ascii_data: ASCII format line data, other ASCII data >databases_geosoft: Geosoft format database of final line data, other Geosoft format databases >documents: Project and field reports, survey background information, gridded data explanations, other documentation >grids_ermapper: Geographically registered gridded data, ER Mapper ERS format >grids_geosoft: Geosoft-format binary grids, these grids can be viewed in ESRI ArcMap using a free plugin from Geosoft >images_registered: GeoTiff format images of all gridded data >kmz: kml language kmz archive files of several project data types including resistivity model depth slices >maps_pdf_format: Printable maps in pdf format >maps_prn_format: Printable maps in HPGL/2 printer file format with extension .prn >photos_flightpath: Survey flight path downward facing photos with GPS location in exif data >resistivity_models: ACSII CSV format resistivity models in project coordinates with data field guides, figures and supporting documentation in ASCII text, PDF, KML, and/or other formats >vector_data: Line path, data contours, and survey boundary in ESRI shapefile (SHP) format >video_flightpath: Survey flight path downward-facing video Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2016 Currentness_Reference: ground condition Status: Progress: complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -149.891330 East_Bounding_Coordinate: -149.560862 North_Bounding_Coordinate: 65.933714 South_Bounding_Coordinate: 65.819074 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Aeromagnetic Theme_Keyword: Aeromagnetic Data Theme_Keyword: Aeromagnetic Map Theme_Keyword: Aeromagnetic Survey Theme_Keyword: Airborne Geophysical Survey Theme_Keyword: Analytic Signal Theme_Keyword: Apparent Resistivity Contours Theme_Keyword: Apparent Resistivity Data Theme_Keyword: Apparent Resistivity Map Theme_Keyword: Apparent Resistivity Survey Theme_Keyword: Conductivity Survey Theme_Keyword: Differential Depth Theme_Keyword: Differential Resistivity Theme_Keyword: EM1DFM Inversion Theme_Keyword: EM1DFM Resistivity Theme_Keyword: Electromagnetic Anomalies Theme_Keyword: Electromagnetic Data Theme_Keyword: Electromagnetic Data Inversion Theme_Keyword: Electromagnetic Survey Theme_Keyword: Engineering Geology Theme_Keyword: Exploration Theme_Keyword: First Vertical Derivative Theme_Keyword: Frequency Domain Electromagnetic Data Theme_Keyword: Geologic Theme_Keyword: Geology Theme_Keyword: Geophysical Map Theme_Keyword: Geophysical Survey Theme_Keyword: Geophysics Theme_Keyword: Geophysics Search Tag Theme_Keyword: Gridded Data Theme_Keyword: HEM Survey Theme_Keyword: HFEM Survey Theme_Keyword: Inversion Theme_Keyword: Line Data Theme_Keyword: Magnetic Contours Theme_Keyword: Magnetic Data Theme_Keyword: Magnetic Survey Theme_Keyword: Magnetics Theme_Keyword: Modeling Theme_Keyword: RESOLVE EM System Theme_Keyword: Radiometric Survey Theme_Keyword: Radiometrics Theme_Keyword: Remote Sensing Theme_Keyword: Resistivity Theme_Keyword: Resistivity Model Theme_Keyword: Resistivity Survey Theme_Keyword: Stacked Multi-Channel Profiles Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Dalton Highway Place_Keyword: Five Mile Airport Place_Keyword: Livengood Quadrangle Place_Keyword: Ray River Place_Keyword: Sightas Island Place_Keyword: Smoothface Mountain Place_Keyword: Trans-Alaska Pipeline Place_Keyword: Woodcamp Creek Place_Keyword: Yukon River Access_Constraints: This report, map, and/or dataset is 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. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data 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 or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager 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_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 Data_Set_Credit: The survey was funded by the Alaska Department of Transportation & Public Facilities as part of U.S. Department of Transportation Federal Highway Administration Project 0653(8), State Project NFHWY00010. Cross_Reference: Citation_Information: Originator: Ball, L.B. Originator: Smith, B.D. Originator: Minsley, B.J. Originator: Abraham, J.D. Originator: Voss, C.I. Originator: Astley, B.N. Originator: Deszcz-Pan, Maria Originator: Cannia, J.C. Publication_Date: 2014 Title: Airborne electromagnetic and magnetic geophysical survey data of the Yukon Flats and Fort Wainwright areas, central Alaska, June 2010 Series_Information: Series_Name: Open-File Report Issue_Identification: OF 2011-1304 Publication_Information: Publication_Place: United States Publisher: U.S. Geological Survey Other_Citation_Details: 21 p Online_Linkage: http://dggs.alaska.gov/pubs/id/29132 Cross_Reference: Citation_Information: Originator: Emond, A.M. Originator: Daanen, R.P. Originator: Graham, G.R.C. Originator: Walter Anthony, Katey Originator: Liljedahl, A.K. Originator: Minsley, B.J. Originator: Barnes, D.L. Originator: Romanovsky, V.E. Originator: CGG Canada Services Ltd. Publication_Date: 2018 Title: Airborne electromagnetic and magnetic survey, Goldstream Creek watershed, interior Alaska Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2016-5 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 14 p Online_Linkage: http://doi.org/10.14509/29681 Cross_Reference: Citation_Information: Originator: Emond, A.M. Originator: Minsley, B.J. Originator: Daanen, R.P. Originator: Graham, G.R.C. Originator: CGG Publication_Date: 2018 Title: Airborne electromagnetic and magnetic survey, Western Yukon Flats, interior Alaska Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2016-2 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 3 p Online_Linkage: http://doi.org/10.14509/29683 Cross_Reference: Citation_Information: Originator: Graham, G.R.C. Originator: Emond, A.M. Originator: Daanen, R.P. Originator: Minsley, B.J. Originator: CGG Publication_Date: 2018 Title: Airborne electromagnetic and magnetic survey, Yukon Crossing to Fox profile, interior Alaska Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2016-3 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 3 p Online_Linkage: http://doi.org/10.14509/29684 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Geophysical data were acquired according to contractor, contract, and request-for-proposals specifications. For additional detail about survey parameters, see the accompanying project report available in the documents directory of this data distribution package. Logical_Consistency_Report: Data originate from one company using the same contract specifications for all data. The originating coordinate system was retained for all publication products. Completeness_Report: This data set includes files that contain processed aeromagnetic measurements, electromagnetic measurements, altimetry measurements, and locational data for the entire survey area. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: These data are positioned with post-processed differential GPS. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: These data are positioned with post-processed differential GPS. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Akima, H. Publication_Date: 1970 Title: A new method of interpolation and smooth curve fitting based on local procedures Series_Information: Series_Name: null Issue_Identification: v. 7, no. 4 Publication_Information: Publication_Place: New York, NY, USA Publisher: Association for Computing Machinery Online_Linkage: null Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1970 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Akima, H., 1970 Source_Contribution: Data collection, processing, and delivery Process_Step: Process_Description: Data collection, processing, and delivery - The supporting documents in digital data package "documents" provides detailed process steps. Source_Used_Citation_Abbreviation: Akima, H., 1970 Process_Date: 2016 Process_Step: Process_Description: Resistivity modeling - Resistivity models were derived from the recorded electromagnetic data through a process called inversion. Inversion programs create a resistivity model that has a data signature nearly the same as the recorded data. When this occurs the model is said to "fit" the data. This process is non-unique, meaning that many different resistivity models could create similar data. The readme file in digital data package "resistivity_models" provides inversion-specific information. Process_Date: 2016 Process_Step: Process_Description: Boundary polygon - The boundary polygon was generated in Geosoft Oasis montaj v9 from the outer extents of the final line data. The final magnetic data were gridded using the Minimum Curvature option with the following settings: grid cell size = 1/5 of the maximum line spacing, blanking distance = double the maximum line spacing, cells to extend beyond data = 0. The polygon file was created using the Grid Outline tool with edge resolution = 1. The polygon file was exported to an ESRI shapefile. Process_Date: 2017 Process_Step: Process_Description: Resistivity Depth Slices Grids, Images, and KMZ - Resistivity models were gridded at specific depths below surface using Geosoft Oasis Montaj v9 to create Geosoft format grids. These depth slices were displayed with the same fixed-color scale by using a Geosoft *.zon file and exported to fixed color RGB GeoTiff images using Geosoft Oasis Montaj v9. The resulting GeoTiff images were imported into ArcMap v10. Using the "map to kml" tool in ArcMap v10 a keyhole markup language archive KMZ file was created making a GroundOverlay of each depth slice grid image. The KMZ was edited assigning a TimeSpan to each image where the 4-digit TimeSpan begin and end encompasses the depth below ground surface of the image. A resistivity colorbar was added to the KMZ as ScreenOverlay. Process_Date: 2018 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 6 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -147 Latitude_of_Projection_Origin: 0 False_Easting: 500000.000000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: .00000001 Ordinate_Resolution: .00000001 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: World Geodetic System of 1984 Ellipsoid_Name: WGS 84 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257223563000025 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: ascii_data Entity_Type_Definition: ASCII format line data, other ASCII data Entity_Type_Definition_Source: CGG Canada Services Ltd. Entity_Attribute_Layer_Name: ascii_data Detailed_Description: Entity_Type: Entity_Type_Label: databases_geosoft Entity_Type_Definition: Geosoft format database of final line data, other Geosoft format databases Entity_Type_Definition_Source: CGG Canada Services Ltd. Entity_Attribute_Layer_Name: databases_geosoft Detailed_Description: Entity_Type: Entity_Type_Label: documents Entity_Type_Definition: Project and field reports, survey background information, gridded data explanations, other documentation Entity_Type_Definition_Source: CGG Canada Services Ltd. Entity_Attribute_Layer_Name: documents Detailed_Description: Entity_Type: Entity_Type_Label: grids_ermapper Entity_Type_Definition: Geographically registered gridded data, ER Mapper ERS format Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: grids_ermapper Detailed_Description: Entity_Type: Entity_Type_Label: grids_geosoft Entity_Type_Definition: Geosoft-format binary grids, these grids can be viewed in ESRI ArcMap using a free plugin from Geosoft Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: grids_geosoft Detailed_Description: Entity_Type: Entity_Type_Label: images_registered Entity_Type_Definition: GeoTiff format images of all gridded data Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: images_registered Detailed_Description: Entity_Type: Entity_Type_Label: kmz Entity_Type_Definition: kml language kmz archive files of several project data types including resistivity model depth slices Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: kmz Detailed_Description: Entity_Type: Entity_Type_Label: maps_pdf_format Entity_Type_Definition: Printable maps in pdf format Entity_Type_Definition_Source: CGG Canada Services Ltd. Entity_Attribute_Layer_Name: maps_pdf_format Detailed_Description: Entity_Type: Entity_Type_Label: maps_prn_format Entity_Type_Definition: Printable maps in HPGL/2 printer file format with extension .prn Entity_Type_Definition_Source: CGG Canada Services Ltd. Entity_Attribute_Layer_Name: maps_prn_format Detailed_Description: Entity_Type: Entity_Type_Label: photos_flightpath Entity_Type_Definition: Survey flight path downward facing photos with GPS location in exif data Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: photos_flightpath Detailed_Description: Entity_Type: Entity_Type_Label: resistivity_models Entity_Type_Definition: ACSII CSV format resistivity models in project coordinates with data field guides, figures and supporting documentation in ASCII text, PDF, KML, and/or other formats Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: resistivity_models Detailed_Description: Entity_Type: Entity_Type_Label: vector_data Entity_Type_Definition: Line path, data contours, and survey boundary in ESRI shapefile (SHP) format Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS), Fugro Airborne Surveys Corp. and Stevens Exploration Management Corp. Entity_Attribute_Layer_Name: vector_data Detailed_Description: Entity_Type: Entity_Type_Label: video_flightpath Entity_Type_Definition: Survey flight path downward-facing video Entity_Type_Definition_Source: CGG Canada Services Ltd. Entity_Attribute_Layer_Name: video_flightpath Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager 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_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 Resource_Description: GPR 2016-4 Distribution_Liability: The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data 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 or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. Standard_Order_Process: Non-digital_Form: DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. 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. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount. Fees: Contact DGGS for current pricing Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: DGGS geophysics datasets are typically compilations of multiple digital data file formats. These formats may include: GeoTiff, ESRI shapefile, Geosoft binary grid (GRD), Microsoft Office documents, PDF, ER Mapper ERS, ASCII text files (including CSV), Geosoft ASCII grid (GXF), Geosoft database, AutoCAD DXF, Geosoft plot file (PLT), Printer files (HPP, PRN, or other), digital images (multiple formats), digital video (multiple formats), Geosoft ASCII XYZ, Geosoft ASCII files (PLY, i0, EXP), and KMZ Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://doi.org/10.14509/29682 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20190107 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Person: Simone Montayne Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager 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_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 Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 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 Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys. Metadata_Extensions: Online_Linkage: http://www.dggs.alaska.gov/metadata/dggs.ext Profile_Name: dggs metadata extensions