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This digital publication, GPR 2008-1, contains geophysical data and a digital elevation model that were produced from airborne geophysical surveys conducted in 2007 for part of the western Fortymile mining district, east-central Alaska. Aeromagnetic and electromagnetic data were acquired for 250 sq miles during the helicopter-based survey. Data provided in GPR 2008-1 include processed (1) linedata ASCII database, (2) gridded files of magnetic data, a calculated vertical magnetic gradient (first vertical derivative), apparent resistivity data, and a digital elevation model, (3) vector files of data contours and flight lines, and (4) the Contractor's descriptive project report. Data are described in more detail in...
Tags: Aeromagnetic Data,
Aeromagnetic Map,
Airborne Geophysical Survey,
Alaska, State of,
Apparent Resistivity Contours, All tags...
Apparent Resistivity Data,
Apparent Resistivity Map,
DIGHEM V EM System,
Digital Elevation Model,
Eagle Quadrangle,
Electromagnetic Data,
First Vertical Derivative,
Fortymile Mining District,
Geophysics,
HEM Survey,
Magnetic Contours,
Tanacross Quadrangle,
geoscientificInformation, Fewer tags
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The Fortymile electromagnetic and magnetic airborne geophysical survey data were acquired with a DIGHEM-V Electromagnetic (EM) system and a cesium magnetometer. The EM and magnetic sensors were flown at a height of 30 meters (m). In addition the survey recorded data from radar and laser altimeters, a GPS navigation system, 50/60 Hz monitors and a video camera. Flights were performed with an AS-350-B2 Squirrel helicopter at a mean terrain clearance of 60 m along N-S survey flight lines with a spacing of 400 m. Tie lines were flown perpendicular to the flight lines at intervals of approximately 4,800 m
Tags: Aeromagnetic,
Aeromagnetic Data,
Aeromagnetic Map,
Aeromagnetic Survey,
Airborne Geophysical Survey, All tags...
Analytic Signal,
Apparent Resistivity Data,
Apparent Resistivity Map,
Apparent Resistivity Survey,
DIGHEM-V EM System,
Eagle Quadrangle,
Electromagnetic Anomalies,
Electromagnetic Data,
Electromagnetic Survey,
First Vertical Derivative,
Fortymile Mining District,
Fortymile River,
Geophysical Map,
Geophysical Survey,
Geophysics,
Geophysics Search Tag,
Gridded Data,
HEM Survey,
HFEM Survey,
Kyanite,
Line Data,
Magnetic Contours,
Magnetic Data,
Magnetic Survey,
Magnetics,
Metamorphic Rocks,
Mining,
Raster Image,
Resistivity,
Tanacross Quadrangle,
Taylor Highway,
Top of the World Highway,
geoscientificInformation, Fewer tags
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The Livengood electromagnetic and magnetic airborne geophysical survey data were acquired with a DIGHEM-V Electromagnetic (EM) system and a cesium magnetometer. The EM and magnetic sensors were flown at a height of 30 meters (m). In addition the survey recorded data from radar and laser altimeters, a GPS navigation system, 50/60 Hz monitors and a video camera. Flights were performed with an AS-350-B2 Squirrel helicopter at a mean terrain clearance of 60 m along N-S survey flight lines with a spacing of 400 m. Tie lines were flown perpendicular to the flight lines at intervals of approximately 4,800 m
Tags: Aeromagnetic,
Aeromagnetic Data,
Aeromagnetic Map,
Airborne Geophysical Survey,
Analytic Signal, All tags...
Apparent Resistivity Data,
Apparent Resistivity Map,
Apparent Resistivity Survey,
DIGHEM-V EM System,
Electromagnetic Anomalies,
Electromagnetic Data,
Electromagnetic Survey,
First Vertical Derivative,
Fortymile Mining District,
Fortymile River,
Geophysical Map,
Geophysical Survey,
Geophysics,
Geophysics Search Tag,
Gridded Data,
HEM Survey,
HFEM Survey,
Line Data,
Livengood Bench,
Livengood Mining District,
Livengood Quadrangle,
Magnetic Contours,
Magnetic Data,
Magnetic Survey,
Magnetics,
Money Knob,
Raster Image,
Resistivity,
Shorty Creek,
Tolovana Mining District,
geoscientificInformation, Fewer tags
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This digital publication, GPR 2013-1, contains data produced from airborne geophysical surveys conducted in 2012 for three separate blocks, the Southern Dishna River, Fox Hills, and Beaver Creek survey areas, in the Iditarod, Ophir, and Holy Cross quadrangles in western Alaska. The areas are in the Iditarod, Innoko, and Aniak mining districts. Aeromagnetic and electromagnetic (EM) data were acquired by helicopter for about 1029 sq miles. Fugro Airborne Survey's frequency-domain DIGHEM V system was used for the EM data. GPR 2013-1 includes (1) raw and processed linedata; (2) gridded, Google Earth, and Geotiff formats of the calculated linedata; (3) maps of the data; and (4) vector files of data contours and flight...
Tags: Aeromagnetic Data,
Aeromagnetic Map,
Aeromagnetic Survey,
Airborne Geophysical Survey,
Alaska, State of, All tags...
Aniak Mining District,
Apparent Resistivity Data,
Apparent Resistivity Map,
DIGHEM V EM System,
Digital Elevation Model,
Electromagnetic Data,
Electromagnetic Survey,
First Vertical Derivative,
Geophysics,
HEM Survey,
Holy Cross Quadrangle,
Iditarod Mining District,
Iditarod Quadrangle,
Innoko Mining District,
Magnetic Survey,
Magnetics,
Ophir Quadrangle,
geoscientificInformation, Fewer tags
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This publication, GPR 2017-1, provides geophysical data produced from an airborne geophysical survey conducted in 2001 and released in 2002 for 276 sq miles of the Liberty Bell area, western Bonnifield mining district, central Alaska. Aeromagnetic and electromagnetic data were acquired during the survey. During 2016, the same digital data were reformatted for ease of use with modern processing tools; vector shapefiles and the analytic signal and calculated first vertical derivative grids were added. Other than the creation of calculated grids, no new processing was done. Data provided in GPR 2017-1 include processed (1) linedata ASCII databases, (2) gridded files of magnetic and resistivity data, (3) vector files...
Tags: Aeromagnetic,
Aeromagnetic Data,
Aeromagnetic Map,
Aeromagnetic Survey,
Airborne Geophysical Survey, All tags...
Alaska, State of,
Apparent Resistivity Data,
Apparent Resistivity Map,
Apparent Resistivity Survey,
Bonanza Creek,
Bonnifield Mining District,
Buzzard Creek,
California Creek,
Chicken Creek,
Coal Creek,
Cody Creek,
DIGHEM-V EM System,
Daniels Creek,
Digital Elevation Model,
Eagle Creek,
Electromagnetic Anomalies,
Electromagnetic Data,
Electromagnetic Survey,
Elsie Creek,
Emma Creek,
Eva Creek,
Fairbanks Quadrangle,
First Vertical Derivative,
Fourth of July Creek,
Geophysical Map,
Geophysical Survey,
Geophysics,
Geophysics Search Tag,
Homestake Creek,
Iron Creek,
Liberty Bell Mine,
Little Moose Creek,
Lynx Creek,
Magnetics,
Marguerite Creek,
McAdam Creek,
Resistivity,
Resistivity Survey,
Rex Creek,
Rex Dome,
Saint Charles Creek,
Spruce Creek,
Steep Creek,
Wilson Creek,
Winter Creek,
geoscientificInformation, Fewer tags
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