{"action":"create","ckan_id":null,"date_created":"Wed, 04 Mar 2026 05:59:57 GMT","date_finished":null,"harvest_job_id":"b9a632ad-ea85-4bcf-9d37-96b15a029475","harvest_source_id":"f4c7bbab-c7ef-4277-a7d3-c25b78854814","id":"321b7dc9-d0fe-4798-8261-b50dcf3ff0b4","identifier":"https://dggs.alaska.gov/webpubs/metadata/GPR2020-13.xml","parent_identifier":null,"source_hash":"32284636714c4deeb6a469a123e0af48cc834b48c5f4c631f06c85e9999a4909","source_raw":"\n\n\n\n\nBurns, L.E.\nEmond, A.M.\nSIAL Geosciences, Inc.\nOn-line Exploration Services, Inc.\n2020\nAirborne magnetic geophysical survey of the Holitna basin area, Alaska, data compilation\ndigital data\n\nGeophysical Report\nGPR 2020-13\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\n11 p.\nhttp://doi.org/10.14509/30459\n\n\n\nThe Holitna airborne magnetic geophysical survey covers the Holitna basin, located in the Sleetemute and Lime Hills quadrangles surrounding the town of Stony River in southwest Alaska. Magnetic data were collected from September 8th to October 7th, 1997. A total of 13,658 line kilometers were collected covering 9,229.1 square kilometers. Line spacing was 800 meters (m). Data were collected using a fixed-wing aircraft with a mean ground clearance of 90 m. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/30459.\nThese data were collected to assist the state in assessing the hydrocarbon potential of the Holitna basin area. The aeromagnetic data was intended to be interpreted and integrated with available geoscience data.\n\n>ascii_data: ASCII format line data, other ASCII data\t\n>databases_geosoft: Geosoft format database of line data, other Geosoft format databases\t\n>documents: Project and field reports, survey background information, gridded data explanations, other supporting documentation\t\n>grids_ermapper: Geographically registered gridded data, ER Mapper ERS format\t\n>grids_geosoft: Geosoft-format binary grids, these grids can be viewed in ESRI ArcMap using a free plugin from Geosoft or using the free viewer available from Geosoft\t\n>images_registered: GeoTiff format images of all gridded data\t\n>kmz: Keyhole markup language (kml) kmz archive files of project data. Viewable in Google Earth and other compatible programs\t\n>maps_pdf_format: Printable maps in pdf format\t\n>vector_data: Line path, data contours, and survey boundary in ESRI shapefile (SHP) format, ESRI Geodatabase format, and/or AutoCAD dxf format\n\n\n\n\n\n1997\n\n\nground condition\n\n\ncomplete\nNone planned\n\n\n\n-157.503980\n-155.074555\n62.076385\n60.924022\n\n\n\n\nISO 19115 Topic Category\ngeoscientificInformation\n\n\nAlaska Division of Geological & Geophysical Surveys\nAeromagnetic\nAeromagnetic Data\nAeromagnetic Map\nAeromagnetic Survey\nAirborne Geophysical Survey\nExploration\nFrequency Domain Electromagnetic Data\nGeologic\nGeology\nGeophysical Map\nGeophysical Survey\nGeophysics\nGeophysics Search Tag\nGridded Data\nLine Data\nMagnetic Data\nMagnetic Survey\nMagnetics\nRemote Sensing\n\n\nAlaska Division of Geological & Geophysical Surveys\nBasket Creek\nBeaverhouse Hill\nBig Lake\nBlack Creek\nCheeneetnuk River\nCotton Village\nDoor Creek\nDoor Mountains\nElutuli Creek\nGagaryah River\nHoholitna River\nHolitna River\nHungry Creek\nInowak Creek\nItulilik Creek\nKeefer Creek\nKulukbuk Hills\nKuskokwim River\nLime Hills\nLime Village\nMoose Creek\nMoose Village\nMuskeg Creek\nMuskrat Creek\nRed Mountain\nShoeleather Creek\nSleetmute\nStink River\nStony River\nSwift River\nTatlawiksuk River\nTishimna Lake\nTitnuk Creek\nTrout Lake\nTundra Lake\nVreeland Creek\nWhy Lake\n\n\nThis 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).\nAny 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.\n\n\n\nAlaska Division of Geological & Geophysical Surveys\n\nMetadata Manager\n\nmailing and physical\n
3354 College Road
\nFairbanks\nAK\n99709-3707\nUSA\n\n(907)451-5020\n(907)451-5050\ndggspubs@alaska.gov\n8 am to 4:30 pm, Monday through Friday, except State holidays\n\n\nFunding was provided by the Alaska State Legislature.\n\n\nDGGS Staff\n2014\nAirborne GeophysWeb: A compilation of geophysical data from DGGS and cooperating agencies\n\nDigital Data Series\nDDS 2\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\nhttp://doi.org/10.14509/27222\n\n\n\n\nDGGS Staff\n2016\nAlaska merged geophysical data grids\n\nDigital Data Series\nDDS 12\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\n3 p\nhttp://doi.org/10.14509/29555\n\n\n\n\n\nGeophysical data were acquired according to the 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.\n\nData originate from one company using the same contract specifications for all data. The originating coordinate system was retained for all publication products.\nThis data set includes files that contain processed aeromagnetic measurements, electromagnetic measurements, altimetry measurements, and locational data for the entire survey area.\n\n\nThese data are positioned with post-processed differential GPS. Discussion of grid resolution and factors that may impact the overall horizontal accuracy of the gridded data is available in the documents directory of this data distribution package.\n\n\nNot applicable\n\n\n\n\n\n\nBurns, L.E.\nSIAL Geosciences, Inc.\nOn-line Exploration Services, Inc.\n2008\nLinedata and gridded data for the aeromagnetic survey of the Holitna basin area, western Alaska: Parts of the Lime Hills and Sleetmute quadrangles\n\nGeophysical Report\nGPR 2008-4\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\n1 DVD\nhttp://doi.org/10.14509/16681\n\n\npaper\n\n\n\n2008\n\n\npublication date\n\nBurns, L.E. and others, 2008\nData collection, processing, and delivery\n\n\n\n\nDGGS Staff\nOn-line Exploration Services, Inc.\nSIAL Geosciences, Inc.\n1998\nTotal field magnetics and flight line paths of the Holitna basin area, western Alaska\n\nPublic Data File\nPDF 98-27\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\n4 sheets, scale 1:125,000\nhttp://doi.org/10.14509/1853\n\n\n125000\npaper\n\n\n\n1998\n\n\npublication date\n\nDGGS Staff and others, 1998\nData collection, processing, and delivery\n\n\n\n\nDGGS Staff\nOn-line Exploration Services, Inc.\nSIAL Geosciences, Inc.\n1998\nTotal field magnetics of the Holitna basin area, western Alaska\n\nReport of Investigation\nRI 98-14\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\n2 sheets, scale 1:125,000\nhttp://doi.org/10.14509/2589\n\n\n125000\npaper\n\n\n\n1998\n\n\npublication date\n\nDGGS Staff and others, 1998\nData collection, processing, and delivery\n\n\n\n\nEdcon, Inc.\n2001\nEdcon land gravity survey, Holitna basin, southwest Alaska\n\nGeophysical Report\nGPR 2001-1\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\n1 DVD\nhttp://doi.org/10.14509/2725\n\n\npaper\n\n\n\n2001\n\n\npublication date\n\nEdcon, Inc., 2001\nData collection, processing, and delivery\n\n\n\n\nSIAL Geosciences, Inc.\nOn-line Exploration Services, Inc.\n1998\nProject report of the aeromagnetic survey for the Holitna basin area, western Alaska\n\nPublic Data File\nPDF 98-29\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\n82 p., 2 sheets, scale 1:125,000\nhttp://doi.org/10.14509/1854\n\n\n125000\npaper\n\n\n\n1998\n\n\npublication date\n\nSIAL Geosciences, Inc. and On-line Exploration Services, Inc., 1998\nData collection, processing, and delivery\n\n\nData collection, processing, and delivery - The airborne geophysical data were acquired under contract with On-Line Explorations Services Inc. and collected by Sial Geoscience Inc. The contractor's project report and other supporting documents are in the \"documents\" digital data package. They provide detailed documentation of the system specifications, data collection, processing, and delivery.\nBurns, L.E. and others, 2008\nDGGS Staff and others, 1998\nDGGS Staff and others, 1998\nEdcon, Inc., 2001\nSIAL Geosciences, Inc. and On-line Exploration Services, Inc., 1998\n1997\n\n\nGrid development - The analytic signal grid was generated by using the analytic signal function in Geosoft Oasis Montaj v9 on the total magnetic field grid. The calculated first vertical derivative grid was created during the analytic signal process. The derivatives in the analytic signal calculation were computed using a fast Fourier transform (FFT) based 2D filter.\n2019\n\n\nRGB GeoTiff creation - RGB GeoTIFF raster files of gridded data were exported using Geosoft v9 by loading each Geosoft grid onto a map and using the map export tool.\n2019\n\n\nGeoPDF creation - Geospatial pdf file created using the Export Map function in Geosoft Oasis Montaj v9 with all maps layers visible.\n2019\n\n\nER Mapper ERS Files - Data value ER Mapper ERS raster files were created using Geosoft v9 for the Geosoft format grids. The \"Copy/Convert\" toll under menu Grid and Image -> Utilities. File type \"ER Mapper (*.ers) was chosen.\n2019\n\n\nStandard Boundary Polygon - The final boundary polygon was generated by loading the line data in Geosoft Oasis Montaj v9. The channel MAG was gridded using the Minimum Curvature option with the following settings: grid cell size = 25, blanking distance = 1600, cells to extend beyond data = 2. The polygon file was created using Grid Outline tool with edge resolution = 0.2. The polygon file was exported to ESRI shapefile.\n2019\n\n\nKeyhole markup language (kml) KMZ archive creation - Data were exported from Geosoft and ESRI ArcMap to kml format files and/or KMZ archives. These files were then combined and modified in Google Earth Pro to create the final KMZ file.\n2019\n\n\nAttributed Flight Path - An attributed ESRI Shape file vector data format flight was created using Geosoft and ArcMap.\n2019\n\n\nLinedata Reformat - Original linedata ASCII format file reformatted to CSV file using UltraEdit and Geosoft. A Geosoft database created by importing the new CSV file. Projection information was assigned to the Geosoft database. The database was split into flight lines, using the \"Split a line based on a line channel\" tool. Improved readme file.\n2019\n\n\nData cataloged for archival and publication - All files were renamed and placed in a standardized set of folders according to the DGGS Geophysics Data Management Manual. Where applicable and as needed data were converted to newer file formats and new files were created. Supporting documentation including but not limited to readme text files, maps, figures, survey overview report, missing data type explanations, and metadata were created.\n2019\n\n\n\n\n\n\n\nUniversal Transverse Mercator\n\n4\n\n0.999600\n-159\n0\n500000.000000\n0\n\n\n\n\ncoordinate pair\n\n.00000001\n.00000001\n\nMeters\n\n\n\nNorth American Datum of 1927\nClarke 1866\n6378206.40000000037\n294.978698199999997\n\n\n\n\n\n\nascii_data\nASCII format line data, other ASCII data\nSIAL Geosciences, Inc., and On-line Exploration Services, Inc.\nascii_data\n\n\n\n\ndatabases_geosoft\nGeosoft format database of line data, other Geosoft format databases\nSIAL Geosciences, Inc., and On-line Exploration Services, Inc.\ndatabases_geosoft\n\n\n\n\ndocuments\nProject and field reports, survey background information, gridded data explanations, other supporting documentation\nSIAL Geosciences, Inc., and On-line Exploration Services, Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS)\ndocuments\n\n\n\n\ngrids_ermapper\nGeographically registered gridded data, ER Mapper ERS format\nSIAL Geosciences, Inc., and On-line Exploration Services, Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS)\ngrids_ermapper\n\n\n\n\ngrids_geosoft\nGeosoft-format binary grids, these grids can be viewed in ESRI ArcMap using a free plugin from Geosoft or using the free viewer available from Geosoft\nSIAL Geosciences, Inc., and On-line Exploration Services, Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS)\ngrids_geosoft\n\n\n\n\nimages_registered\nGeoTiff format images of all gridded data\nAlaska Division of Geological & Geophysical Surveys (DGGS)\nimages_registered\n\n\n\n\nkmz\nKeyhole markup language (kml) kmz archive files of project data. Viewable in Google Earth and other compatible programs\nAlaska Division of Geological & Geophysical Surveys (DGGS)\nkmz\n\n\n\n\nmaps_pdf_format\nPrintable maps in pdf format\nSIAL Geosciences, Inc., and On-line Exploration Services, Inc.\nmaps_pdf_format\n\n\n\n\nvector_data\nLine path, data contours, and survey boundary in ESRI shapefile (SHP) format, ESRI Geodatabase format, and/or AutoCAD dxf format\nSIAL Geosciences, Inc., and On-line Exploration Services, Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS)\nvector_data\n\n\n\n\n\n\n\nAlaska Division of Geological & Geophysical Surveys\n\nMetadata Manager\n\nmailing and physical\n
3354 College Road
\nFairbanks\nAK\n99709-3707\nUSA\n\n(907)451-5020\n(907)451-5050\ndggspubs@alaska.gov\n8 am to 4:30 pm, Monday through Friday, except State holidays\n\n\nGPR 2020-13\nThe 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.\n\nDGGS 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.\nContact DGGS for current pricing\n\n\n\n\nDGGS 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\n\n\n\n\n\nhttp://doi.org/10.14509/30459\n\n\n\n\n\nFree download\n\n\n\n20200630\n\n\n\nAlaska Division of Geological & Geophysical Surveys\nSimone Montayne\n\nMetadata Manager\n\nmailing and physical\n
3354 College Road
\nFairbanks\nAK\n99709-3707\nUSA\n\n(907)451-5020\n(907)451-5050\ndggspubs@alaska.gov\n8 am to 4:30 pm, Monday through Friday, except State holidays\n\n\nFGDC Content Standard for Digital Geospatial Metadata\nFGDC-STD-001-1998\nIf 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.\n\nhttp://www.dggs.alaska.gov/metadata/dggs.ext\ndggs metadata extensions\n\n\n\n","source_transform":null,"status":"error"}