{"action":"create","ckan_id":null,"date_created":"Sat, 14 Feb 2026 20:46:59 GMT","date_finished":null,"harvest_job_id":"b099ff79-e0c0-4989-8abd-bd643fba622f","harvest_source_id":"31f41541-38a0-400b-b240-10ebcb0acd9a","id":"1e46125b-f3f0-47a0-8146-48f3940270ea","identifier":"https://dggs.alaska.gov/webpubs/metadata/GPR2021-3-v-2.xml","parent_identifier":null,"source_hash":"012f687cfa873e82a4b46f974e58b6ce17bbb9be779d399f9e3bb29706ea18f4","source_raw":"Emond, A.M.MPX Geophysics LTDBaigent, MarkFusso, L.A.Petersen, E.I.2025White Mountains airborne magnetic and radiometric geophysical surveydigital, dataGeophysical ReportGPR 2021-3 v. 2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 p.https://doi.org/10.14509/31693White Mountains airborne magnetic and radiometric geophysical survey, Geophysical Report 2021-3 v. 2, covers parts of Livengood, Circle, and Fairbanks quadrangles 25 kilometers km north of Fairbanks, Alaska. Magnetic and radiometric data were collected with a fixed-wing aircraft from June 30 to August 22, 2021, by MPX Geophysics Ltd. A total of 36,933 line kilometers were collected covering 13,423 square km. The magnetometer was mounted to a rear-facing fixed boom called tail stinger. The radiometric crystals were located in the cabin of the aircraft. The White Mountains survey was flown with a line spacing of 400 meters m and a mean ground clearance of 270 m. We updated this dataset in 2025 to refine processing, removing artifacts and excess noise present in the final products provided by the original contractor. The raw data were reprocessed by Baigent Geosciences. The International Geomagnetic Reference Field correction was recalculated accounting for aircraft height and the data were relevelled using Baigent Geosciences software. A complete and detailed report on the reprocessing steps undertaken is included in the publication documents. The result of the reprocessing is that leveling artifacts have been removed and the data now display finer features, including well-defined lineaments and other anomalies which were not present in the original contractor grids. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/31693.The data from the White Mountains airborne magnetic and radiometric geophysical survey will improve the understanding of the geology and mineral potential of the area, promote resource exploration, and be a part of the continuous regional magnetic data coverage of the Yukon Tanana Uplands.>ascii_data: ASCII format line data, other ASCII data\t\r\n>databases_geosoft: Geosoft format database of final line data, other Geosoft format databases\t\r\n>documents: Project report, calibration reports\t\r\n>grids_geosoft: Oasis montaj Geosoft GRD format gridded data\t\r\n>grids_tif: Geographically registered data value rasters of gridded data, GeoTiff format\t\r\n>maps_pdf_format: Printable and geographically registered maps in pdf format. Compatible with mobile device navigation and desktop mapping applications.\t\r\n>video_flightpath: Survey flight path downward facing video\t\r\n>vector_data: Line path and survey boundary in Esri shapefile (shp) format20212025ground conditionCompleteNone planned-149.501098-144.92097366.00870064.955577ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysAeromagneticAeromagnetic DataAeromagnetic MapAeromagnetic SurveyAirborne Geophysical SurveyAnalytic SignalBedrockBedrock GeologyDGGSEarth MRIEconomic GeologyExplorationFaultsFirst Vertical DerivativeFixed Wing SurveyGeologicGeologyGeophysical MapGeophysical SurveyGeophysicsGeophysics Search TagLine DataMagnetic DataMagnetic SurveyMagneticsMagnetometer SurveyMineral ExplorationMineral ResourcesRadiometric SurveyRadiometricsRaster ImageRemote SensingStrategic MineralsAlaska Division of Geological & Geophysical SurveysAggie CreekBear CreekBig CreekBirch CreekBonanza CreekBrachipod GulchCache CreekCalifornia CreekChampion CreekChatanikaChatanika RiverCircle Mining DistrictCleary CreekCripple CreekDeadwood CreekDeception PupDiscontented PupDiscovery CreekDiscovery PupEagle CreekEster CreekFairbanks Mining DistrictFlat CreekFossil CreekGoldstream CreekLast Chance CreekLivengoodLivengood CreekLivengood DomeLong CreekMastodon CreekMoney KnobMount PrindleNome CreekOphir CreekPedro CreekPoker CreekPoker FlatQuartz CreekRampart Mining DistrictReady Bullion CreekRuby CreekSlate CreekSnow GulchSourdough CreekTable MountainTolovana Mining DistrictTolovana RiverTreasure CreekWhite MountainsWonder CreekYukon-Tanana UplandThis 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).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.Alaska Division of Geological & Geophysical SurveysMetadata Managermailing and physical
3354 College Road
FairbanksAK99709-3707USA(907)451-5020(907)451-5050dggspubs@alaska.gov8 am to 4:30 pm, Monday through Friday, except State holidaysPlease view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.This work was supported by the U.S. Geological Survey's Earth MRI program grant G20AC00160. Reprocessing efforts were supported by the State of Alaska, capital improvement project funds. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.Burns, L.E.Geoterrex-DighemStevens Exploration Management Corp.Emond, A.M.Graham, G.R.C.2015Livengood mining district electromagnetic and magnetic airborne geophysical survey data compilationGeophysical ReportGPR 2015-5Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys11 phttps://doi.org/10.14509/29412Burns, L.E.Graham, G.R.C.Barefoot, J.D.Fugro Airborne SurveysStevens Exploration Management Corp.2019Northeast Fairbanks electromagnetic and magnetic airborne geophysical survey data compilationGeophysical ReportGPR 2018-11Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys12 phttps://doi.org/10.14509/30062Burns, L.E.Barefoot, J.D.Woods, Rebecca-EllenWGM Mining and Geological Consultants, Inc.Dighem Surveys and Processing2019Circle electromagnetic and magnetic airborne geophysical survey data compilationGeophysical ReportGPR 2019-3Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 phttps://doi.org/10.14509/30167Burns, L.E.Graham, G.R.C.Barefoot, J.D.Woods, Rebecca-EllenDighemWGM, Inc.Fugro Airborne SurveysStevens Exploration Management Corp.2019Fairbanks electromagnetic and magnetic airborne geophysical survey data compilationGeophysical ReportGPR 2019-18Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys13 phttps://doi.org/10.14509/30230DGGS Staff2016Alaska merged geophysical data gridsDigital Data SeriesDDS 12Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys3 phttps://doi.org/10.14509/29555Emond, A.M.MPX Geophysics LTD2021White Mountains airborne magnetic and radiometric geophysical surveyGeophysical ReportGPR 2021-3Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 phttps://doi.org/10.14509/30756Emond, A.M.MPX Geophysics LTD2022Tanana River and Big Delta airborne magnetic and radiometric surveyGeophysical ReportGPR 2022-1Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 phttps://doi.org/10.14509/30899Emond, A.M.Daanen, R.P.Graham, G.R.C.Walter Anthony, KateyLiljedahl, A.K.Minsley, B.J.Barnes, D.L.Romanovsky, V.E.CGG Canada Services Ltd.2018Airborne electromagnetic and magnetic survey, Goldstream Creek watershed, interior AlaskaGeophysical ReportGPR 2016-5Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys14 phttps://doi.org/10.14509/29681Graham, G.R.C.Emond, A.M.Daanen, R.P.Minsley, B.J.CGG2018Airborne electromagnetic and magnetic survey, Yukon Crossing to Fox profile, interior AlaskaGeophysical ReportGPR 2016-3Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys3 phttps://doi.org/10.14509/29684Geophysical 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.Data originate from one company using DGGS contract specifications for all data (see accompanying project report). The originating coordinate system was retained for all publication products.This data set includes files that contain processed aeromagnetic measurements, radiometric measurements, magnetic measurements, altimetry measurements, and locational data for the entire survey area.Station coordinates were positioned using a real-time or post-processed corrected differential GPS.Not applicableData acquisition - White Mountains airborne magnetic and radiometric geophysical survey covers parts of the Livengood, Circle, and Fairbanks quadrangles 25 kilometers (km) north of Fairbanks, Alaska Magnetic and radiometric data were collected with a fixed-wing aircraft June 30 to August 22, 2021 by MPX Geophysics LTD. A total of 36,933 line kilometers were collected covering 13,423 square km. The magnetometer was mounted to a rear-facing fixed boom ('tail stinger'), and the radiometric crystals were located in the cabin of the aircraft. The survey was flown with a line spacing of 400 meters and a mean ground clearance of 270 m.2021Data refinement and reprocessing - In 2025, the dataset was updated to refine processing and remove artifacts and excess noise present in the final products provided by the original contractor. The raw data were reprocessed by Baigent Geosciences. The International Geomagnetic Reference Field correction was recalculated accounting for aircraft height, and the data were relevelled using Baigent Geosciences software. A complete and detailed report on the reprocessing steps undertaken is included in the publication documents. The result of the reprocessing is that leveling artifacts have been removed and the data now display finer features, including well-defined lineaments and other anomalies which were not present in the original contractor grids.2025Data cataloged for archival and publication - Final data were published and archived by DGGS.2025rasterUniversal Transverse Mercator60.999600-1470500000.0000000coordinate pair.00000001.00000001MetersWGS84WGS 846378137298.257223563ascii_dataASCII format line data, other ASCII dataMPX Geophysics LTDascii_datadatabases_geosoftGeosoft format database of final line data, other Geosoft format databasesMPX Geophysics LTDdatabases_geosoftdocumentsProject report, calibration reportsMPX Geophysics LTD and Alaska Division of Geological & Geophysical Surveys (DGGS)documentsgrids_geosoftOasis montaj Geosoft GRD format gridded dataMPX Geophysics LTD and Alaska Division of Geological & Geophysical Surveys (DGGS)grids_geosoftgrids_tifGeographically registered data value rasters of gridded data, GeoTiff formatAlaska Division of Geological & Geophysical Surveys (DGGS)grids_tifmaps_pdf_formatPrintable and geographically registered maps in pdf format. Compatible with mobile device navigation and desktop mapping applications.MPX Geophysics LTDmaps_pdf_formatvideo_flightpathSurvey flight path downward facing videoMPX Geophysics LTDvideo_flightpathvector_dataLine path and survey boundary in Esri shapefile (shp) formatAlaska Division of Geological & Geophysical Surveys (DGGS)vector_dataAlaska Division of Geological & Geophysical SurveysMetadata Managermailing and physical
3354 College Road
FairbanksAK99709-3707USA(907)451-5020(907)451-5050dggspubs@alaska.gov8 am to 4:30 pm, Monday through Friday, except State holidaysPlease view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.GPR 2021-3 v. 2The 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.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.Contact DGGS for current pricingGeoTiff, ESRI shapefile, Geosoft binary grid (GRD), Microsoft Office documents, PDF (with or without georeferencing), ER Mapper ERS, ASCII text files (including CSV), Geosoft database, AutoCAD DXF, Geosoft plot file (PLT), digital images (multiple formats), georeferenced photos (multiple formats), Geosoft ASCII XYZ, Geosoft ASCII files (PLY, i0, EXP), and KMZ.20250929Airborne electromagnetic geophysical survey data compilationhttps://doi.org/10.14509/31693Free download20250929Alaska Division of Geological & Geophysical SurveysSimone MontayneMetadata Managermailing and physical
3354 College Road
FairbanksAK99709-3707USA(907)451-5020(907)451-5050dggspubs@alaska.gov8 am to 4:30 pm, Monday through Friday, except State holidaysFGDC Content Standard for Digital Geospatial MetadataFGDC-STD-001-1998If 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.https://dggs.alaska.gov/metadata/dggs.extdggs metadata extensions","source_transform":null,"status":"error"}