alaska_magnetic_anomaly_merge_2015: Geosoft-format binary grids, GeoTiff format gridded data images, KMZ/KML files and ESRI Shapefiles.
Staff, DGGS, 2016, Alaska merged geophysical data grids: Digital Data Series DDS 12, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
This is a raster data set.
The map projection used is Alaska Albers.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.0000000030536018158500163
Ordinates (y-coordinates) are specified to the nearest 0.0000000030536018158500163
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is GRS 80.
The semi-major axis of the ellipsoid used is 6378137.
The flattening of the ellipsoid used is 1/298.257222101000025.
Publicly available airborne and marine magnetic data were obtained from the U.S. Geological Survey (USGS), the State of Alaska Division of Geological & Geophysical Surveys(DGGS), and the National Oceanic and Atmospheric Association - National Centers for Environmental Information (NOAA-NCEI). This data release was compiled by the USGS (Richard Saltus) and the DGGS.
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This magnetic anomaly map of Alaska provides a statewide view of magnetic anomalies in Alaska. This information fills the need for a statewide view of magnetic anomalies in Alaska to evaluate the state's structure, geologic processes, and tectonic evolution.
Alaska Division of Geological & Geophysical Surveys, 1975, Aeromagnetic map, Big Delta Quadrangle, Alaska: Alaska Open-File Report AOF 73, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Alaska Division of Geological & Geophysical Surveys, 1975, Aeromagnetic map, northeast part of Selawik Quadrangle, Alaska: Alaska Open-File Report AOF 78, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Alaska Division of Geological & Geophysical Surveys, 1975, Aeromagnetic map, northwestern part of Shungnak Quadrangle, Alaska: Alaska Open-File Report AOF 79, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Alaska Division of Geological & Geophysical Surveys, Surveys, Fugro Airborne, Stevens Exploration Management Corp., and Burns, L.E., 2002, Line, grid and vector data of the airborne geophysical survey data for the Broad Pass area, southwestern Bonnifield mining district, central Alaska: Geophysical Report GPR 2002-12, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Bailey, K.A., Cooper, A.K., Marlow, M.S., and Scholl, D.W., 1976, Preliminary residual magnetic map of the eastern Bering Shelf and parts of western Alaska: Miscellaneous Field Studies Map MF 716, U.S. Geological Survey, United States.Online Links:
Brown, P.J., 2003, Aeromagnetic surveys in Yukon Flats Alaska, a website for the distribution of data: Open-File Report OF 2003-319, U.S. Geological Survey, United States.Online Links:
Burns, L.E., Barefoot, J.D., Graham, G.R.C., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2019, Western Fortymile electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2019-7, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Barefoot, J.D., Graham, G.R.C., Naibert, T.J., Geoterrex-Dighem, and Stevens Exploration Management Corp., 2019, Salcha River-Pogo electromagnetic, magnetic, and radiometric airborne geophysical survey data compilation: Geophysical Report GPR 2019-8, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Barefoot, J.D., Naibert, T.J., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2019, Goodpaster electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2018-4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Barefoot, J.D., Woods, Rebecca-Ellen, WGM Mining and Geological Consultants, Inc., and Dighem Surveys and Processing, 2019, Circle electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2019-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Barefoot, J.D., and Stevens Exploration Management Corp., 2019, Council electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2019-6, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Emond, A.M., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2019, Styx River electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2019-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Fugro Airborne Surveys Corp., Stevens Exploration Management Corp., Graham, G.R.C., and Emond, A.M., 2016, Bonnifield mining district electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2016-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Fugro Airborne Surveys Corp., Stevens Exploration Management Corp., and Graham, G.R.C., 2015, Petersville mining district electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2015-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Fugro Airborne Surveys Corp., and Fugro GeoServices, Inc., 2011, Ladue survey area: Magnetic and electromagnetic line, grid, and vector data and Maps, Fortymile mining district, Tanacross Quadrangle, eastern Alaska: Geophysical Report GPR 2011-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2004, Line, gridded, and vector data of airborne geophysical survey data for the Fairbanks and Richardson mining districts, interior Alaska: Geophysical Report GPR 2004-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2005, Line, gridded, and vector data, and selected plot files of the Chulitna mining district, Alaska: Geophysical Report GPR 2004-8, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2005, Line, gridded, and vector data, and selected plot files of the airborne geophysical survey data of the Nome mining district, Seward Peninsula, Alaska: Geophysical Report GPR 2004-6, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2006, Line, grid, and vector data and plot files for the airborne geophysical survey data of northeast Fairbanks area, Fairbanks and Circle mining districts, interior Alaska: Geophysical Report GPR 2006-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2006, Line, grid, and vector data and plot files for the airborne geophysical survey data of parts of the east Richardson, Liscum, and Black Mountain areas, interior Alaska: Geophysical Report GPR 2006-5, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2008, Final processed database for the airborne geophysical surveys of the Alaska Highway corridor, east-central Alaska: Geophysical Report GPR 2006-8, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2010, Line, grid, and vector data, and maps for the airborne geophysical survey of the Moran Survey Area, Melozitna and Tanana quadrangles, central Alaska: Geophysical Report GPR 2010-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Geoterrex-Dighem, Stevens Exploration Management Corp., Emond, A.M., and Graham, G.R.C., 2015, Fortymile mining district electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2015-4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Geoterrex-Dighem, Stevens Exploration Management Corp., Emond, A.M., and Graham, G.R.C., 2015, Livengood mining district electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2015-5, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Geoterrex-Dighem, WGM, Inc., Emond, A.M., and Graham, G.R.C., 2014, Iron Creek airborne electromagnetic and magnetic geophysical survey data compilation: Geophysical Report GPR 2014-6, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Graham, G.R.C., Barefoot, J.D., Naibert, T.J., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2019, Southeastern extension of Salcha River-Pogo electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2019-9, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Graham, G.R.C., Emond, A.M., Barefoot, J.D., CGG, and Fugro GeoServices, Inc., 2019, Middle Styx electromagnetic, magnetic, and radiometric airborne geophysical survey data compilation: Geophysical Report GPR 2019-10, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Naibert, T.J., Barefoot, J.D., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2019, Slate Creek - Slana River electromagnetic and magnetic airborne geophysical survey data compilation: Geophysical Report GPR 2018-9, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., SIAL Geosciences, Inc., and On-line Exploration Services, Inc., 2008, Linedata and gridded data for the aeromagnetic survey of the Holitna basin area, western Alaska: Parts of the Lime Hills and Sleetmute quadrangles: Geophysical Report GPR 2008-4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Stevens Exploration Management Corp., Surveys, Fugro Airborne, and U.S. Bureau of Land Management, 2000, DVD containing profile data, gridded data, vector data, and location information of 2000 geophysical survey data for parts of the Aniak and Iditarod mining districts, southwestern Alaska: Geophysical Report GPR 2000-38, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., U.S. Bureau of Land Management, Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2006, Line, grid, and vector data and plot files for the airborne geophysical survey data of parts of the southern National Petroleum Reserve-Alaska, northwest Alaska: Geophysical Report GPR 2006-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., U.S. Bureau of Land Management, Surveys, Fugro Airborne, and Stevens Exploration Management Corp., 2003, Line, grid, and vector data of airborne geophysical survey data for the southern Delta River area, east-central Alaska: Geophysical Report GPR 2003-6, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., U.S. Bureau of Land Management, Surveys, Fugro Airborne, and Stevens Exploration Management Corp., 2003, Line, grid, and vector data of the airborne geophysical survey data of the Sleetmute area, southwestern Alaska: Geophysical Report GPR 2003-10, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Cady, J.W., 1991, Aeromagnetic map of Alaska from lat 65 degrees -68 degrees N, long 141 degrees -162 degrees W; color-shaded relief: Geophysical Investigations Map GP 992, U.S. Geological Survey, United States.Online Links:
Case, J.E., Tysdal, R.G., Hillhouse, J.W., and Gromme, C.S., 1979, Geologic interpretation of aeromagnetic map of the Seward and Blying Sound quadrangles, Alaska: Miscellaneous Field Studies Map MF 880-D, U.S. Geological Survey, United States.Online Links:
Childs, J.R., Cooper, A.K., and Wright, A.W., 1981, Residual magnetic map of Umnak Plateau region, southeastern Bering Sea: Geophysical Investigations Map GP 939, U.S. Geological Survey, United States.Online Links:
Cooper, A.K., Bailey, K.A., Howell, J.I., Marlow, M.S., and Scholl, D.W., 1976, Preliminary residual magnetic map of the Bering Sea and the Kamchatka Peninsula: Miscellaneous Field Studies Map MF 715, U.S. Geological Survey, United States.Online Links:
Staff, DGGS, Dighem, WGM, Inc., and U.S. Bureau of Land Management, 1997, Disk containing gridded files and section lines of 1997 geophysical survey data for Stikine area, southeast Alaska: Public Data File PDF 97-42, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Staff, DGGS, Dighem, and WGM, Inc., 1997, Disk containing gridded files and section lines of 1995 and 1996 geophysical survey data for Rampart-Manley mining district, Alaska: Public Data File PDF 97-22, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Staff, DGGS, Dighem, and WGM, Inc., 1998, CD-ROM containing profile and gridded data and section lines of 1997 geophysical survey data for Ruby area, central Alaska: Public Data File PDF 98-31, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Staff, DGGS, On-line Exploration Services, Inc., SIAL Geosciences, Inc., and U.S. Bureau of Land Management, 1998, CD-ROM digital archive files of 1997 survey data for the northeastern portion of the Koyukuk mining district, eastern Brooks Range, Alaska: Public Data File PDF 98-24, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Staff, DGGS, Zonge Engineering Research Organization, Inc., and Service, GEONEX Aero, 1995, Total field magnetics of the southeastern Bethel basin, Alaska: Report of Investigation RI 95-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Decker, J.E., and Dillon, J.T., 1982, Aeromagnetic map of the Bettles Quadrangle, Alaska: Alaska Open-File Report AOF 179, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Decker, J.E., and Dillon, J.T., 1982, Aeromagnetic map of the Wiseman Quadrangle, Alaska: Alaska Open-File Report AOF 176, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Decker, J.E., and Dillon, J.T., 1982, Aeromagnetic map of the northern half of the Hughes Quadrangle, Alaska: Alaska Open-File Report AOF 178, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Decker, J.E., and Dillon, J.T., 1982, Aeromagnetic map of the northern portion of the Shungnak Quadrangle, Alaska: Alaska Open-File Report AOF 177, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Decker, John, and Karl, S.M., 1977, Preliminary aeromagnetic map of the Brooks Range and Arctic Slope, Alaska: Open-File Report OF 77-166-E, U.S. Geological Survey, United States.Online Links:
Fisher, M.A., Moore, G.W., von Huene, R., and McClellan, P.H., 1981, Map of marine magnetic data from Shelikof Strait to Sutwik Island, Alaska: Miscellaneous Field Studies Map MF 1227, U.S. Geological Survey, United States.Online Links:
Surveys, Fugro Airborne, Stevens Exploration Management Corp., Burns, L.E., and Graham, G.R.C., 2018, Electromagnetic and magnetic airborne-geophysical survey of the Liberty Bell area, western Bonnifield mining district, Alaska (data compilation): Geophysical Report GPR 2018-10, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Griscom, Andrew, 1979, Aeromagnetic and geologic interpretation maps of the Talkeetna Quadrangle, Alaska: Miscellaneous Field Studies Map MF 870-B, U.S. Geological Survey, United States.Online Links:
Hackett, S.W., 1978, Aeromagnetic map of Talkeetna-Kashwitna River area, Alaska: Alaska Open-File Report AOF 107H, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Jachens, R.C., 1984, Interpretation of the aeromagnetic data: Bulletin B 1525, U.S. Geological Survey, United States.Online Links:
Miller, T.P., and Anderson, L.A., 1969, Airborne radioactivity and total intensity magnetic survey of the southern Kobuk Selawik Lowland, western Alaska: Open-File Report OF 69-170, U.S. Geological Survey, United States.Online Links:
Saltus, R.W., Haeussler, P.J., Bracken, R.E., Doucette, J.P., and Jachens, R.C., 2001, Anchorage urban region aeromagnetics (AURA) project; preliminary geophysical results: Open-File Report OF 2001-85, U.S. Geological Survey, United States.Online Links:
Saltus, R.W., and Simmons, G.C., 1997, Composite and merged aeromagnetic data for Alaska; a web site for distribution of gridded data and plot files: Open-File Report OF 97-520, U.S. Geological Survey, United States.Online Links:
Sander, S.D., 1997, Aeromagnetic survey, southwestern Bethel basin, Bethel, Alaska: Public Data File PDF 97-28, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Schwab, W.C., and Bruns, T.R., 1979, Preliminary residual magnetic map of the northern Gulf of Alaska: Miscellaneous Field Studies Map MF 1054, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1973, Aeromagnetic survey, eastern part of Bettles Quadrangle, northeast Alaska: Open-File Report OF 73-305, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1974, Aeromagnetic map of the Circle Quadrangle, northeastern Alaska: Open-File Report OF 74-1101, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1976, Aeromagnetic map, McCarthy Quadrangle, Alaska: Open-File Report OF 76-170, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1976, Aeromagnetic survey, Ruby Quadrangle, Alaska: Open-File Report OF 76-188, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1977, Aeromagnetic map of Ketchikan, Prince Rupert, and northeastern Craig quadrangles, Alaska: Open-File Report OF 77-359, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1977, Aeromagnetic map of the Philip Smith Mountains Quadrangle, Alaska: Open-File Report OF 77-572, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1978, Aeromagnetic map of Chignik and Sutwik Island quadrangles, Alaska: Open-File Report OF 78-262, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1978, Aeromagnetic map of the Lake Clark 1 degree by 3 degree Quadrangle, Alaska: Open-File Report OF 78-1086, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1978, Aeromagnetic maps of Chignik and Sutwik Island quadrangles, Alaska: Open-File Report OF 78-263, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1979, Aeromagnetic map of Yakobi and Chichagof islands, Alaska: Open-File Report OF 79-529, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1979, Aeromagnetic map of part of the Valdez 1 degree by 3 degree Quadrangle, Alaska: Open-File Report OF 79-381, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1979, Aeromagnetic map of parts of the Cordova and Middleton Island 1 degree by 3 degree quadrangles, Alaska: Open-File Report OF 79-223, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1979, Aeromagnetic map of the Medfra 1 degree by 3 degree Quadrangle, Alaska: Open-File Report OF 79-380, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1979, Aeromagnetic map of the Petersburg area, Alaska: Open-File Report OF 79-832, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1979, Aeromagnetic profiles of the Bering Glacier, Mt. St. Elias, and Yakutat 1 degree by 3 degree quadrangles, Alaska: Open-File Report OF 79-224, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1980, Aeromagnetic map of Afognak Island and vicinity, Alaska: Open-File Report OF 80-57, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1980, Aeromagnetic map of the Chugach area, Alaska: Open-File Report OF 80-58, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1981, Aeromagnetic map of the Ugashik-Karluk area, Alaska: Open-File Report OF 81-1158, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1984, Aeromagnetic map of part of the Anchorage 1 degree by 3 degree Quadrangle, Alaska: Open-File Report OF 84-352, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1984, Aeromagnetic map of parts of the Ugashik and Karluk 1 degree by 2 degree quadrangles, Alaska: Open-File Report OF 84-351, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1984, Aeromagnetic map of the Craig area, Alaska: Open-File Report OF 84-666, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1984, Aeromagnetic map of the Juneau area, Alaska: Open-File Report OF 84-296, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1984, Aeromagnetic map of the western part of the Healy 1 degree by 3 degree Quadrangle, Alaska: Open-File Report OF 84-295, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 1985, Composite aeromagnetic map of part of the Wrangell Mountains, Alaska: Open-File Report OF 85-605, U.S. Geological Survey, United States.Online Links:
U.S. Geological Survey, 2002, Aeromagnetic surveys in the Anchorage, Iliamna, and Tyonek quadrangles, Alaska; a website for the distribution of data: Open-File Report OF 2002-267, U.S. Geological Survey, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, Anchorage Quadrangle, Alaska: Alaska Open-File Report AOF 21, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, Bendeleben Quadrangle, Alaska: Alaska Open-File Report AOF 3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, Eagle Quadrangle, Alaska: Alaska Open-File Report AOF 18, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, Talkeetna Mountains Quadrangle, Alaska: Alaska Open-File Report AOF 20, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, Talkeetna Quadrangle, Alaska: Alaska Open-File Report AOF 19, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, northeast part of Nome Quadrangle, Alaska: Alaska Open-File Report AOF 5, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, northern Solomon Quadrangle, Alaska: Alaska Open-File Report AOF 6, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, northwest Norton Bay Quadrangle, Alaska: Alaska Open-File Report AOF 7, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, southeast part of Bethel Quadrangle, Alaska: Alaska Open-File Report AOF 14, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, southeastern part of Fairbanks Quadrangle, Alaska: Alaska Open-File Report AOF 8, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, southeastern part of Teller Quadrangle, Alaska: Alaska Open-File Report AOF 2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Veach, N.J., 1973, Aeromagnetic map, west half of Candle Quadrangle, Alaska: Alaska Open-File Report AOF 4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Data sources used in this process:
Geological Survey of Canada, and U.S. Geological Survey, 2015, Yukon - eastern Alaska magnetic grid: Natural Resources Canada, Canada.Online Links:
Grid values represent the total intensity of the Earth's magnetic field after removal of the International Geomagnetic Reference Field (IGRF) and leveling to a satellite-based long-wavelength crustal magnetic field (MF7). Measurements were made using a variety of magnetometer systems with typical accuracies of 1 to 10 nanotesla (nT). The grids presented in this report were made from numerous individual grids that were mathematically merged together using the Intrepid GridMerge software. Geophysical data were acquired according to contractor, contract, and request for proposals specifications. The data in the original grids have been processed using formulas and methods that are not usually documented but that represent industry-standard practices for airborne data reduction.
Flight Path Recovery - before about 1975: Horizontal position of the survey aircraft used to collect data were determined by reconciling down-looking photographs (recorded on continuous-strip film) with topographic maps and orthophoto quadrangle maps. Fiducial numbers and marks, impressed on any paper strips that were recording data or added to magnetic tape records, were included as a function of time to further reconcile location with instrumentation. Flight Path Recovery - before about 1990: Horizontal position of the survey aircraft used to collect data were determined using aircraft navigational aids such as line-of-sight electronic systems that measure the distances from each of two ground stations to the aircraft using microwave or radio transmitters. Flight Path Recovery - after about 1990: Horizontal position of the survey aircraft used to collect data were determined using GPS satellite navigation.
The magnetic anomaly grids were compiled from the best available aeromagnetic surveys publicly available in 2015. Best available would be data having the highest resolution, closest line-spacing, most accurate instrumentation, most accurate flight-elevation surface, and similar specifications commonly used in the airborne surveying industry. In many areas, only one survey was available. In many offshore areas and some onshore areas, no data were available at all, and these areas were left blank.
The data in this file were collected by the various contractors or groups who were responsible for collecting and processing the data. The data used to make the original grids were collected using different instruments (magnetometers, altimeters, navigational systems) throughout the survey, but were usually consistent within each survey. Survey contracts specified the conditions and specifications under which these data were collected. Standard industry practices of the time were followed in data collection and processing. Geophysical data were acquired according to contractor, contract, and request for proposals specifications.
Are there legal restrictions on access or use of the data?
- 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.
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DDS 12
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.
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.
| Data format: | Geosoft-format binary grids, GeoTiff format gridded data images, KMZ/KML files and ESRI Shapefiles. |
|---|---|
| Network links: |
<http://doi.org/10.14509/29555> |
(907)451-5020 (voice)
(907)451-5050 (FAX)
dggspubs@alaska.gov