{"action":"create","ckan_id":null,"date_created":"Sat, 28 Mar 2026 21:38:40 GMT","date_finished":null,"harvest_job_id":"c98657db-542f-454b-a49f-06de8f6d4eb3","harvest_source_id":"31f41541-38a0-400b-b240-10ebcb0acd9a","id":"45dd7838-0ab3-4c70-9540-bf9f33fd2c49","identifier":"https://dggs.alaska.gov/webpubs/metadata/GPR2025-2.xml","parent_identifier":null,"source_hash":"b0c286fdea288cb2996c76ba30025fd24ad9fd0058ab3020d6b19739de2e578d","source_raw":"Petersen, E.I.Fusso, L.A.Emond, A.M.SkyTEM Canada IncorporatedAqua Geo Frameworks LLC2025Kuskokwim airborne electromagnetic survey, northern Kaiyuh Mountains, Alaskadigital, dataGeophysical ReportGPR 2025-2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys8 p.https://doi.org/10.14509/31304Kuskokwim airborne electromagnetic survey, northern Kaiyuh Mountains, Alaska, Geophysical Report 2025-2, covers parts of the Nulato and Ophir quadrangles south of Galena, Alaska. Time-domain electromagnetic data were collected with the helicopter-mounted SkyTEM 306HP system from July 22 to August 19, 2024, by SkyTEM Canada Incorporated. A total of 5,823.4 line kilometers were collected over a single survey block covering 2,037 square kilometers. Two special sub-survey blocks were defined to increase data coverage of specific holdings: the North Block--funded in collaboration with Doyon, Limited--and the South Block--funded in collaboration with Western Alaska Copper & Gold. The main survey block was flown with east-west line orientation and a nominal line spacing of 400 meters. The North Block was flown with an infilled effective line spacing of 200 meters, and the South Block was flown with an infilled effective line spacing of 200 meters, including north-south oriented lines in addition to east-west oriented lines The mean ground clearance was 45.8 +/- 10.2 meters with a nominal survey speed of 89.6 +/- 14.7 km/hr. The data were inverted to create two subsurface resistivity models, agf_sci and skytem_lci, presented herein. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/31304.The data from the Kuskokwim airborne electromagnetic survey, northern Kaiyuh Mountains, Alaska, will be used to improve the understanding of geology and mineral potential and to promote resource exploration in the greater Kuskokwim Mountains region.>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 and other supporting files\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>kmz: Keyhole markup language (kml) kmz archive files of project data. Viewable in Google Earth and other compatible programs\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>models_resistivity: Files for model input parameters as well as model outputs from Aarhus Workbench. Images of resistivity sections\t\r\n>vector_data: Line path and survey boundary in ESRI shapefile (SHP) format2024ground conditionCompleteNone planned-158.181948-156.85193664.53754863.952806ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysAeromagneticAeromagnetic DataAeromagnetic MapAeromagnetic SurveyAirborne Geophysical SurveyAnalytic SignalDGGSElectromagnetic DataElectromagnetic SurveyMineral ExplorationMineral ResourcesMiningModelingResistivityResistivity ModelAlaska Division of Geological & Geophysical SurveysBishop CreekBonanza CreekBranch CreekCalifornia CreekCamp CreekColorado CreekDome CreekEddy CreekIllinois CreekKaiyuh Mining DistrictKaiyuh MountainsKala CreekKalakaket CreekKhotol MountainKinkaid CreekLittle Mud RiverMinnesota CreekRuby Mining DistrictTotson MountainYuki RiverYukon CreekThis 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 State of Alaska capital improvement project funds. Doyon, Limited, and Western Alaska Copper & Gold funded additional survey lines over the North and South blocks, respectively, increasing data density in those area.Geophysical 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. The data release is a partial release of the contractor deliverable.Station coordinates were positioned using a real-time or post-processed corrected differential GPS.Not applicableData collection, processing, and delivery - The airborne geophysical data were acquired under contract with SkyTEM Canada Incorporated and Aqua Geo Frameworks LLC. Airborne geophysical data for the areas were acquired and processed by SkyTEM Canada Incorporated and Aqua Geo Frameworks LLC. Time-domain electromagnetic data were collected with the helicopter-mounted SkyTEM 306HP system from July 22 to August 19, 2024, by SkyTEM Canada Incorporated. A total of 5,823.4 line kilometers were collected over a single survey block covering 2,037 square kilometers. Two special sub-survey blocks were defined to increase data coverage of specific holdings: the North Block--funded in collaboration with Doyon, Limited--and the South Block--funded in collaboration with Western Alaska Copper & Gold. The main survey block was flown with east-west line orientation and a nominal line spacing of 400 meters. The North Block was flown with an infilled effective line spacing of 200 meters, and the South Block was flown with an infilled effective line spacing of 200 meters, including north-south oriented lines in addition to east-west oriented lines The mean ground clearance was 45.8 +/- 10.2 meters with a nominal survey speed of 89.6 +/- 14.7 km/hr. The data were inverted to create two subsurface resistivity models, agf_sci and skytem_lci, presented herein.2024Data cataloged for archival and publication - Final data were published and archived by DGGS.2024rasterUniversal Transverse Mercator40.999600-1590500000.0000000coordinate pair.00000001.00000001MetersWGS84WGS 846378137298.257223563ascii_dataASCII format line data, other ASCII dataSkyTEM Canada Incorporated and Aqua Geo Frameworks LLCascii_datadatabases_geosoftGeosoft format database of final line data, other Geosoft format databasesSkyTEM Canada Incorporated and Aqua Geo Frameworks LLCdatabases_geosoftdocumentsProject report and other supporting filesSkyTEM Canada Incorporated and Aqua Geo Frameworks LLC and DGGSdocumentsgrids_geosoftOasis montaj Geosoft GRD format gridded dataSkyTEM Canada Incorporated and Aqua Geo Frameworks LLC and DGGSgrids_geosoftgrids_tifGeographically registered data value rasters of gridded data, GeoTiff format.DGGSgrids_tifkmzKeyhole markup language (kml) kmz archive files of project data. Viewable in Google Earth and other compatible programsDGGSkmzmaps_pdf_formatPrintable and geographically registered maps in pdf format. Compatible with mobile device navigation and desktop mapping applications.SkyTEM Canada Incorporated and Aqua Geo Frameworks LLCmaps_pdf_formatmodels_resistivityFiles for model input parameters as well as model outputs from Aarhus Workbench. Images of resistivity sectionsDGGSmodels_resistivityvector_dataLine path and survey boundary in ESRI shapefile (SHP) formatDGGSvector_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 2025-2The 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 ASCII grid (GXF), Geosoft database, AutoCAD DXF, Geosoft plot file (PLT), Printer files (HPP, PRN, or other), digital images (multiple formats), georeferenced photos (multiple formats), digital video (multiple formats), Geosoft ASCII XYZ, Geosoft ASCII files (PLY, i0, EXP), and KMZ.20250324Airborne electromagnetic geophysical survey data compilationhttps://doi.org/10.14509/31304Free download20250324Alaska 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"}