AndreaBozzo/ceres-open-data-index huggingface dataset:
Alaska Geoid Heights (GEOID96)

This 2' x 4' geoid height grid for Alaska is distributed as a GEOID96 model. The computation used 1.1 million terrestrial and marine gravity data held in the National Geodetic Survey gravity data base in July 1996 These data were augmented by gravity data contributions from NGA (former National Imagery and Mapping Agency (former Defence Mapping Agency)). By means of a Fast Fourier Transform (FFT) technique, high frequency corrections were made to an underlying EGM96 geopotential model through a remove, compute, and restore process. The gravity values are based on the International Gravity Standardization Net 1971 (IGSN71). The geoid heights are referred to the Geodetic Reference System 1980 (GRS80) ellipsoid. Unlike the grid for the conterminous United States, this GEOID96 grid does not incorporate GPS on leveled benchmarks. This model is a gravimetric geoid in a geocentric, ITRF94(1996.0) reference frame. It is necessary to subtract 12.0 cm from these values to obtain the geoid undulation between the best-fit global geopotential surface and the GRS80 ellipsoid (both expressed in a tide free system). Additional information is available at: http://www.ngs.noaa.gov/GEOID/geoid.html We are particularly grateful to NGA (former National Imagery and Mapping Agency) for their assistance and their data contributions.

Tags: absolute gravity, alaska, bouguer gravity, continent, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north america, observed gravity, reference systems, satellite orbits, solid earth, u.s. department of commerce, united states of america
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
High Density GEOSAT/GM Altimeter Data

The high density Geosat/GM altimeter data south of 30 S have finally arrived. In addition, ERS-1 has completed more than 6 cycles of its 35-day repeat track. These data provide a dramatically improved view of the marine gravity field.

Tags: absolute gravity, bouguer gravity, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, global, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north america, observed gravity, reference systems, satellite orbits, solid earth, u.s. department of commerce
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
PR/VI Geoid Heights (GEOID96)

This 2' geoid height grid for Puerto Rico and the Virgin Islands is distributed as a GEOID96 model. The computation used 26,000 terrestrial and marine gravity data held in the National Geodetic Survey gravity data base in July 1996 These data were augmented by gravity data contributions from NGA (former National Imagery and Mapping Agency (former Defence Mapping Agency)). By means of a Fast Fourier Transform (FFT) technique, high frequency corrections were made to an underlying EGM96 geopotential model through a remove, compute, and restore process. The gravity values are based on the International Gravity Standardization Net 1971 (IGSN71). The geoid heights are referred to the Geodetic Reference System 1980 (GRS80) ellipsoid. Unlike the grid for the conterminous United States, this GEOID96 grid does not incorporate GPS on leveled benchmarks. This model is a gravimetric geoid in a geocentric, ITRF94(1996.0) reference frame. It is necessary to subtract 12.0 cm from these values to obtain the geoid undulation between the best-fit global geopotential surface and the GRS80 ellipsoid (both expressed in a tide free system). Additional information is available at: http://www.ngs.noaa.gov/GEOID/geoid.htmlWe are particularly grateful to NGA (former National Imagery and Mapping Agency) for their assistance and their data contributions.

Tags: absolute gravity, atlantic ocean, bouguer gravity, caribbean sea, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north atlantic ocean, observed gravity, ocean, puerto rico, reference systems, satellite orbits, solid earth, u.s. department of commerce, virgin islands
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
PR/VI North-South Deflections (DEFLEC96)

This 2' surface deflection of the vertical grid for Puerto Rico and the Virgin Islands is distributed as the DEFLEC96 model. The computation used about 26,000 terrestrial and marine gravity data held in the National Geodetic Survey gravity data base in July 1996. These data were augmented by gravity data contributions from NGA (former National Imagery and Mapping Agency (former Defence Mapping Agency)). The deflections were obtained by numerical differentiation of cubic spline models along the meridians of the GEOID96 grid. The gravity values are based on the International Gravity Standardization Net 1971IGSN71). The deflections are referred to theGeodetic Reference System 1980 (GRS80) ellipsoidal normals. The curvature of the plumbline correction has been applied. We are particularly grateful to NGA (former National Imagery and Mapping Agency) for theirassistance and their data contributions.

Tags: absolute gravity, atlantic ocean, bouguer gravity, caribbean sea, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north atlantic ocean, observed gravity, ocean, puerto rico, reference systems, satellite orbits, solid earth, u.s. department of commerce, virgin islands
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Ohio Bouguer Gravity Grid

A 2 kilometer Bouguer anomaly grid for the state of Ohio. Number of columns is 187 and number of rows is 217. The order of the data is from the lower left to the right and then up one row.

Tags: absolute gravity, bouguer gravity, continent, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north america, observed gravity, ohio, reference systems, satellite orbits, solid earth, u.s. department of commerce, united states of america
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Haxby Worldwide Gravity Grid

In 1985, Dr. William F. Haxby of the Lamont-Doherty Geological Observatory of Columbia University prepared this data base of free-air gravity anomalies, based on the radar altimetry of the SEASAT satellite mission in 1978.

Tags: absolute gravity, bouguer gravity, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, global, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north america, observed gravity, reference systems, satellite orbits, solid earth, u.s. department of commerce
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Gravity Station Data for Spain

The gravity station data total 28493 records. This data base was received in April 1997. Principal gravity parameters include Free-air Anomalies which have been adjusted to the International Gravity Standardization Net 1971 (IGSN 71), and the gravity anomaly computation uses the Geodetic Reference System 1980 (GRS80) theoretical gravity formula (Somigliana formula). The data are randomly distributed within the boundaries of Spain.

Tags: absolute gravity, bouguer gravity, continent, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, europe, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, observed gravity, reference systems, satellite orbits, solid earth, southern europe, spain, u.s. department of commerce
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Aeromagnetic Regional Grid Data

Several regions are represented in this unique collection of earth surface measurements of magnetic field parameters and their related anomalies. The DNAG Magnetics "Super grid" of Magnetic Anomaly Map of North America was created from the four "Original" DNAG Magnetic data sets distributed by The Committee for the Magnetic Anomaly Map of North America, 1987. This development of a super grid involved an extensive task of matching original quadrant information and eliminating overlap. The resulting grid, with x and y step intervals of 2.0 kilometers yields a grid with dimensions (4451 x 4273) containing 19,019,123 values. This process can be thought of as "stitching the grids." The data in this grid are in a Spherical Transverse Mercator projection, the kilometer coordinates of which can be recovered from the indices of a grid point. The Ministry of Geology of the USSR published a mosaic series of 18 maps in 1974, at a scale of 1:2,500,000 showing the residual magnetic intensity over the land mass of the USSR. Much of the source material originated from data collected between 1949-1962, during which time the entire territory of the USSR was surveyed using aerial magnetic survey techniques. These surveys wereadjusted based on many methods including secular variation linked to magnetic observatories. Anomalies were computed with reference to a normal field map for 1964-65 constructed from equally accurate total field measurements along control network strips. Digitization was accomplished in 1982 by the U.S. Naval Oceanographic Office. The "BRIGGS cubic spline" method was used to compute grid values. A one-minute grid was created by properly matching the boundaries of the digitized sub-sections. The units of the original map aremilli-Oersteds and the units of the resulting digital grid are milli-Oersted/100. Corrections to the digital contour file were made by Conoco Inc.in 1993. New Grid files at 2.5 Km and 5.0 Km spacing were created and re-archived by NGDC. These data are available on CD-ROM. World Data Center-A (WDC-A) for Solid Earth Geophysics presently holds Grid data from many U.S. and other regions. These data were contributed by: USGS, MINN G.S. and other Worldwide organizations. Grid intervals vary but are as fine as 213.36m for the NGS Super Grid of the state of Minnesota. Other grids were recreated indigital form from previously published maps and charts. The bulk of these grid data files were contributed to NGDC after 1985. A detailed list of the specific regions is available upon request.

Tags: aeromagnetic surveys, airborne magnetics, anomaly grids, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, geomagnetism, geophysical fields, global, gridded tracklines, magnetic anomalies, magnetic field, national centers for environmental information, national geophysical data center, nesdis, noaa, reference fields, solid earth, u.s. department of commerce
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
ANWR and Alaska Peninsula Gravity Data

The gravity station data (1252 records) were compiled by the U.S. Geological Survey and the State of Alaska Division of Geological & Geophysical Surveys. This data base was received in August, 1984. Principal gravity parameters include Free-air Anomalies and Simple Bouguer Anomalies (no terrain correction applied) for the Alaska Peninsula. The observed gravity values are referenced to the International Gravity Standardization Net 1971 (IGSN 71). The gravity anomaly computation uses the Geodetic Reference System 1967 (GRS 67) theoretical gravity formula. The data are randomly distributed within the boundaries of northeast Alaska including the Arctic National Wildlife Range (ANWR) and the Alaska Peninsula. Note that the original USGS Open File Report by D. F. Barnes mentions the use of the 1931 International Ellipsoid for gravity reduction but this is believed to have subsequently been changed to the GRS 67 system.

Tags: absolute gravity, alaska, alaska peninsula, anwr, arctic national wildlife refuge, bouguer gravity, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north and central america, observed gravity, reference systems, satellite orbits, solid earth, u.s. department of commerce, united states
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
30-min x 30-min Terrestrial Mean Free-Air Anomalies

The 30-min x 30-min Terrestrial Mean Free-Air Gravity Anomaly and Geoid Undulations Data Base was compiled and developed by the Ohio State University. This data base was received in March 1993. Principal gravity parameters include mean elevation, mean free-air anomaly and source id. The gravity anomaly computation uses the Geodetic Reference System 1967 (GRS 67) theoretical formula. The data are global in coverage where data are available.

Tags: absolute gravity, bouguer gravity, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, global, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, observed gravity, reference systems, satellite orbits, solid earth, u.s. department of commerce
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Regional Files of GEOS3/SEASAT/GEOSAT Data

Gravity anomalies and sea surface heights have been computed on a 0.125 degree grid in the ocean areas from a combined GEOS3/SEASAT/GEOSAT altimeter data set. This data base was received in March 1993. The area of data coverage is latitude 72N to 72S and longitude 0E to 360E.

Tags: absolute gravity, bouguer gravity, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, global, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north america, observed gravity, reference systems, satellite orbits, solid earth, u.s. department of commerce
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Andes 1997 Gravity Data

The Central Andes gravity data (6,151 records) were compiled by Professor Gotze and the MIGRA Group. This data base was received in April, 1997. Principal gravity parameters include Free-air Anomalies and Bouguer Anomalies (terrain and mass corrected). The gravity station data have been adjusted to the International Gravity Standardization Net 1971 (IGSN 71). The gravity anomaly computation uses the Geodetic Reference System 1967 (GRS 67) theoretical gravity formula. The data are randomly distributed within the area bounded by 64 - 71 degrees West and 20 - 29 degrees South in the Central Andes of South America.

Tags: absolute gravity, andes, bouguer gravity, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, observed gravity, reference systems, satellite orbits, solid earth, south america, u.s. department of commerce
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Gravity Data for South America

The gravity station data (152,624 records) were compiled by the University of Texas at Dallas. This data base was received in June 1992. Principal gravity parameters include Free-air Anomalies and Simple Bouguer Anomalies (no terrain correction applied). The observed gravity values are referenced to the International Gravity Standardization Net 1971 (IGSN 71). The gravity anomaly computation uses the Geodetic Reference System 1967 (GRS 67) theoretical gravity formula. The data are randomly distributed within the boundaries and offshore of South America.

Tags: absolute gravity, bouguer gravity, continent, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, observed gravity, reference systems, satellite orbits, solid earth, south america, u.s. department of commerce
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Nevada Isostatic Gravity Grid

A 2 kilometer Isostatic anomaly grid for the state of Nevada. Number of columns is 269 and number of rows is 394. The order of the data is from the lower left to the right and then up one row.

Tags: absolute gravity, bouguer gravity, continent, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, nevada, noaa, north america, observed gravity, reference systems, satellite orbits, solid earth, u.s. department of commerce, united states of america
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Wisconsin Gravity Data for the Rhinelader Area

The gravity station data (195 records) were compiled by Barbara Eckstein. This data base was received in January 1987. Principal gravity parameters include Free-Air Anomalies and Simple Bouguer Anomalies (no terrain correction applied). The observed gravity values are referenced to the International Gravity Standardization Net 1971 (IGSN 71). The gravity anomaly computation uses the Geodetic Reference System 1967 (GRS 67) theoretical gravity formula. The data are randomly distributed within the Rhinelander area of northern Wisconsin.

Tags: absolute gravity, bouguer gravity, continent, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north america, north and central america, observed gravity, reference systems, rhinelader area, satellite orbits, solid earth, u.s. department of commerce, united states, united states of america, wisconsin
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
U.S. Terrain Corrected Free Air Anomalies (96)

This 2' gravity anomaly grid for the conterminous United States is NOT the input data set used in development of the GEOID96 model. This gravity grid models the 1.7 million terrestrial and marine gravity data held in the National Geodetic Survey gravity data base in July 1996. The data used in this grid have NOT been augmented by gravity data contributions from NGA (former National Imagery and Mapping Agency (former Defence Mapping Agency)). Please note that the GEOID96 model itself does contain the NGA (former National Imagery and Mapping Agency) contributions. These gravity values are based on the International Gravity Standardization Net 1971 (IGSN71). Terrain corrected, atmospherically corrected, Bouguer anomalies were computed with respect to the Geodetic Reference System 1980 (GRS80) using NAD83 and NAVD88 coordinates. Terrain corrections were computed by FFT integration of 30" digital elevation data throughout the United States. These complete Bouguer anomalies were gridded by splines in tension. The free air anomaly grid was obtained by restoring the Bouguer plate with a 2' mean elevation grid. Additional information is available at http://www.ngs.noaa.gov/GEOID/geoid.html

Tags: absolute gravity, bouguer gravity, continent, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north america, observed gravity, reference systems, satellite orbits, solid earth, u.s. department of commerce, united states of america
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Basin and Range Province, Western US, USGS Grids #3

These grid files were used to produce gravity and basin depth maps of the Basin and Range Province, western United States. The maps show gravity values and modeled basin depths in this area. The data were compiled by the U.S. Geological Survey, Denver, Colorado. This data base was received in June, 1995. For further information see the readme.txt file in this directory(data\grids\basinrng), and the "Gravity and Basin-Depth Maps of the Basin and Range Province, Western United States", by R.W. Saltus and R.C. Jachens, Map GP-1012.

Tags: absolute gravity, bouguer gravity, control surveys, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, free air anomaly, geodetics/gravity, gravitational field, gravity, gridded gravity, icsu-wds, international council for science - world data system, land gravity, national centers for environmental information, national geophysical data center, nesdis, noaa, north and central america, observed gravity, reference systems, satellite orbits, solid earth, u.s. department of commerce, united states, western united states
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Multibeam collection for KM0202: Multibeam data collected aboard Kilo Moana from 14-Aug-02 to 03-Sep-02, Balboa, Panama to Honolulu, Hawaii

This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found

Tags: acoustic sounders, bathymetry, bathymetry/seafloor topography, doc/noaa/nesdis/ncei, earth remote sensing instruments, earth science, global positioning system/inertial measurement unit, gps, gps receivers, gps/imu, in situ ocean-based platforms, in situ/laboratory instruments, mbes, msbs, multibeam mapping system, multibeam swath bathymetry system, national centers for environmental information, nesdis, noaa, ocean, oceans, passive remote sensing, positioning/navigation, profilers/sounders, seafloor topography, ships, sonar, sound navigation and ranging, u.s. department of commerce, water depth
Organization: National Oceanic and Atmospheric Administration, Department of Commerce