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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
The Tonsina electromagnetic and magnetic airborne geophysical survey data were acquired with a DIGHEMv Electromagnetic (EM) system and a CGG D1344 cesium magnetometer with a Scintrex CS3 cesium sensor. 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, GPS navigation system, 50/60 Hz monitors and video camera. Flights were performed with an AS-350-B3 Squirrel helicopter at a mean terrain clearance of 60 m along NW-SE (345 degrees) 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. These data were produced under contract between the State of...
Tags: Aeromagnetic,
Aeromagnetic Data,
Aeromagnetic Map,
Airborne Geophysical Survey,
Alaska, State of, All tags...
Analytic Signal,
Apparent Resistivity Contours,
Apparent Resistivity Data,
Apparent Resistivity Map,
Apparent Resistivity Survey,
Electromagnetic Anomalies,
Electromagnetic Data,
Electromagnetic Survey,
First Vertical Derivative,
Geophysical Map,
Geophysical Survey,
Geophysics,
Geophysics Search Tag,
Gridded Data,
HEM Survey,
HFEM Survey,
Magnetic Contours,
Magnetic Data,
Magnetic Survey,
Magnetics,
Nelchina Mining District,
Raster Image,
Resistivity,
Strategic Minerals,
Valdez Quadrangle,
geoscientificInformation, Fewer tags
The Tok electromagnetic and magnetic airborne geophysical survey data were acquired with a DIGHEMv Electromagnetic (EM) system and a CGG D1344 cesium magnetometer with a Scintrex CS3 cesium sensor. 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-B3 Squirrel helicopter at a mean terrain clearance of 60 m along NE-SW (12 degrees) 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. These data were produced under contract between the State of...
Tags: Aeromagnetic,
Aeromagnetic Data,
Aeromagnetic Map,
Airborne Geophysical Survey,
Alaska, State of, All tags...
Analytic Signal,
Apparent Resistivity Contours,
Apparent Resistivity Data,
Apparent Resistivity Map,
Apparent Resistivity Survey,
Electromagnetic Anomalies,
Electromagnetic Data,
Electromagnetic Survey,
First Vertical Derivative,
Geophysical Map,
Geophysical Survey,
Geophysics,
Geophysics Search Tag,
Gridded Data,
Gulkana Quadrangle,
HEM Survey,
HFEM Survey,
Magnetic Contours,
Magnetic Data,
Magnetic Survey,
Magnetics,
Mentasta Pass,
Mount Hayes Quadrangle,
Nabesna Quadrangle,
Raster Image,
Tanacross Quadrangle,
Tok Mining District,
Tok River,
geoscientificInformation, Fewer tags
The Bonnifield electromagnetic and magnetic airborne geophysical survey data were acquired in 2006 and 2007 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-B3 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 for part of the Bonnifield mining district in Interior Alaska. Aeromagnetic and electromagnetic...
Tags: Aeromagnetic Data,
Aeromagnetic Map,
Airborne Geophysical Survey,
Alaska, State of,
Apparent Resistivity Contours, All tags...
Apparent Resistivity Data,
Apparent Resistivity Map,
Bonnifield Mining District,
Differential Resistivity,
Digital Elevation Model,
Electromagnetic Data,
Electromagnetic Survey,
Fairbanks Quadrangle,
First Vertical Derivative,
Geophysics,
HEM Survey,
Healy,
Healy Quadrangle,
Liberty Bell Mine,
Magnetic Contours,
Magnetic Survey,
Magnetics,
Magnetometer Survey,
Raster Image,
geoscientificInformation, Fewer tags
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