Tag Archive: Alaska

North Chukchi Sea Ice Survey (AK) [G1066]

Survey Size: Eight profiles, 517 gravity stations acquired by helicopter using inertial surveying; 512 stations on the North Chukchi Sea Ice, 5 stations on land Line Spacing: Data were acquired at 3-mile intervals along 8 profiles spaced 40 miles apart Survey Date: Spring 1986 Deliverable products include: Three-dimensional Bouguer correction applied Maps (scale 1:500,000): Station …

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Chukchi Marine Sea Ice (AK) [G1065]

Cukchi Marine Sea Ice

Survey Size: Gravity: 61,939 km Magnetics: 48,427 km Line Spacing: 5 km, average Survey Date: 1980 through 1986 Deliverable products include: Line Data: principal survey facts, including navigation, bathymetry, and observed and processed gravity and magnetic data Gridded data: marine-acquired bathymetry, free-air, 3-D Bouguer gravity, and magnetic anomaly Maps: Paper plots and pdf format image …

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Beaufort Sea Ice Survey [G1064]

Beaufort Sea IceSurvey

Survey Size: 8 profiles, 386 gravity stations acquired by helicopter using inertial surveying; 352 stations on the Beaufort Sea ice, 34 stations on land Data Spacing: Data were acquired at 3-mile intervals along 8 profiles; spacing between profiles varies from 20 to 70 miles Complete Bouguer Corrections: Three-dimensional Bouguer correction applied Data Provided: Magnetic tape …

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Beaufort Sea Coastal Survey [G1063]

Beaufort Sea Coastal Survey

Survey Size: 119 gravity stations acquired by helicopter using inertial surveying Data Spacing: Data were acquired at variable intervals along the coast from the Canadian border to the Canning River Terrain Corrections: Through Hayford-Bowie Zone J Data Provided: Bouguer Gravity Map at a scale of 1″ = 8,000′; station location map. Gravity data are tied …

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NPRA Survey [G1062]

NPRA Survey

Survey Size: 5,000 square miles; approximately 4,000 stations acquired by helicopter with inertial surveying; approximately 10,000 stations (public data) Data Spacing: 5,900 foot grid Terrain Corrections: Through Hayford-Bowie Zone J Data Provided: Magnetic tape and computer printout containing all principal survey facts including: station number, date surveyed, latitude, longitude, UTM X-coordinate, UTM Y-coordinate, elevation, terrain …

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Holtina Basin Survey [G1061]

Holtina Basin Survey

Survey Size: 1,150 stations acquired using inertial surveying Data Spacing: Data were acquired at one-mile intervals along lines spaced six miles apart Terrain Corrections: Through Hayford-Bowie Zone J Data Provided: Magnetic tape and computer printout containing all principal survey facts including: station number, date surveyed, latitude, longitude, UTM X-coordinate, UTM Y-coordinate, elevation, terrain correction, station …

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Bristol Bay Survey [G1060]

Bristol Bay Survey

Survey Size: 2,400 square miles; 1,600 stations Data Spacing: ½ mile intervals on lines 3 miles apart, acquired using helicopter-supported inertial surveying Terrain Corrections: Through Hayford-Bowie Zone J Data Provided: Bouguer Gravity Map (scale 1:96,000): Gravity data are tied to the Worldwide Defense Mapping Agency base station gravity network. Magnetic tape and computer printout containing …

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Aluetian Islands Survey [G1059]

Aleutian Islands Survey

Survey Size: 5,200 square miles, 250 stations Data Spacing: Variable, acquired using helicopter-supported inertial surveying Terrain Corrections: Through Hayford-Bowie Zone J Data Provided: Maps (scale 1:250,000): Bouguer Gravity Map. Gravity data are tied to the Worldwide Defense Mapping Agency base station gravity network. Magnetic tape and computer printout containing all principal survey facts including: station …

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Alaska Peninsula Survey [G1058]

Alaska Peninsula

Survey Size: Approximately 7,000 square miles; 1,609 helicopter stations from EDCON’s Bristol Bay Survey, 908 stations from the USGS gravity data base, 3,013 helicopter stations from the Strata Search survey. Data Spacing: Variable Terrain Corrections: Through Hayford-Bowie Zone J Project Summary: USGS stations have been terrain-corrected and integrated with the EDCON and Strata Search data. …

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