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Federal
NCEI/WDS Global Significant Earthquake Database, 2150 BC to Present
National Oceanic and Atmospheric Administration, Department of Commerce —
The Significant Earthquake Database is a global listing of over 5,700 earthquakes from 2150 BC to the present. A significant earthquake is classified as one that... -
Federal
Worldwide Well Logs with Values of Conductivity, Bulk Density, Porosity, Grain Density, Resistivity, and Sonic Ratio Collected by the Ocean Drilling Program (ODP)
National Oceanic and Atmospheric Administration, Department of Commerce —
World-wide digital well log data collected for the Ocean Drilling Program (ODP) by Schlumberger Offshore Services under contract to Texas A&M University. The data... -
Federal
Geomagnetic aa Indices
National Oceanic and Atmospheric Administration, Department of Commerce —
The geomagnetic aa indices are the continuation of the series beginning in the year 1868. A full description of these indices is given in the International... -
Federal
U.S. Outer Continental Shelf Marine Borehole Data
National Oceanic and Atmospheric Administration, Department of Commerce —
Well log data from the U.S. outer continental shelf commercial wells, and continental offshore stratigraphic test (cost) wells. Product Description: geophysical... -
Federal
2-minute Gridded Global Relief Data (ETOPO2) v2
National Oceanic and Atmospheric Administration, Department of Commerce —
This version has been superseded by a newer version. It is highly recommended for users to access the current version. Users should only access this superseded... -
Federal
K Indices of Magnetic Activity Relative to an assumed Quiet-day for each 3-Hour Period
National Oceanic and Atmospheric Administration, Department of Commerce —
The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) receives the K indices on a current basis from approximately 85... -
Federal
Worldwide Database of Analog Marine Seismics, Bathymetry, Magnetics, and Gravity Data
National Oceanic and Atmospheric Administration, Department of Commerce —
The Analog Marine Geophysical Underway data file consists primarily of seismic data and some bathymetry, magnetics, and gravity data. Most of the data are released to... -
Federal
Air Force Geophysics Laboratory Magnetometer Network
National Oceanic and Atmospheric Administration, Department of Commerce —
This file is comprised of the variation one minute values of the geomagnetic components X, Y and Z. These data were calculated by the Air Force Geophysics Laboratory... -
Federal
Crustal Ages of the Ocean Floor - Poster
National Oceanic and Atmospheric Administration, Department of Commerce —
The Crustal Ages of the Ocean Floor Poster was created at NGDC using the Crustal Ages of the Ocean Floor database draped digitally over a relief of the ocean floor... -
Federal
Values About Ancient Magnetic Poles, Declination, Inclination, and Intensity, That Can Be Used to Track the Magnetic Pole and Continent Movements
National Oceanic and Atmospheric Administration, Department of Commerce —
The study of magnetism is one of the oldest of the geophysical sciences. It is unique among the sciences in that ancient records of the geomagnetic field are... -
Federal
AA Geomagnetic Activity Indices From Two Antipodal Observatories in Australia and England
National Oceanic and Atmospheric Administration, Department of Commerce —
The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) receives, on a monthly basis, indices that are based on the data... -
Federal
Values for the 15-minute Index of Geomagnetic Activity at High Latitude Stations (Geomagnetic Latitude 58 Degrees)
National Oceanic and Atmospheric Administration, Department of Commerce —
The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) receives, on a monthly basis, Q indices from Sodankyla. These data... -
Federal
Geomagnetic Absolute Mean Values at Hourly Intervals from 220 Observatories Worldwide
National Oceanic and Atmospheric Administration, Department of Commerce —
This file is comprised of absolute mean hourly values of the geomagnetic components D, H and Z or X, Y and Z. These values, on magnetic tape, are available from... -
Federal
Seismicity Catalog Collection, 2150 BC to 1996 AD (Superseded Version)
National Oceanic and Atmospheric Administration, Department of Commerce —
The NOAA National Centers for Environmental Information decommissioned the Seismicity Catalog Collection, 2150 BC to 1996 AD on May 05, 2025 with no further updates.... -
Federal
5-minute Gridded Global Relief Data (ETOPO5) (Version Superseded)
National Oceanic and Atmospheric Administration, Department of Commerce —
This version has been superseded by a newer version. It is highly recommended for users to access the current version. Users should only access this superseded... -
Federal
Worldwide Instantaneous Values of Geomagnetic Components D, H, and Z or X, Y, and Z at 2.5-minute Intervals from 1964 to 1974
National Oceanic and Atmospheric Administration, Department of Commerce —
This data file is comprised of instantaneous values of the geomagnetic components D, H, and Z or X, Y, and Z at 2.5-minute intervals. These values were derived from...
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