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Federal
Data on the Earth's Magnetic Field and its Secular Change since 1800 22 recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
Information on the past and present orientation of the Earth's magnetic field is available from the National Geophysical Data Center (NGDC) which serves as the... -
Federal
Marine Trackline Geophysical Database NGDA 10 recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
This data set contains bathymetry, magnetic, gravity and seismic shot point navigation data collected during marine cruises from 1939 to the present. Coverage is... -
Federal
Geomagnetic Storm Sudden Commencements 10 recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
Storm Sudden Commencements (ssc) 1868 to present: STORM1 and STORM2 Lists: (Some text here is taken from the International Association of Geomagnetism and Aeronomy... -
Federal
Declination Calculator
National Oceanic and Atmospheric Administration, Department of Commerce —
Declination is calculated using the current International Geomagnetic Reference Field (IGRF) model. Declination is calculated using the current World Magnetic Model... -
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... -
Federal
Geomagnetic Observatory One Minute Data
National Oceanic and Atmospheric Administration, Department of Commerce —
Geomagnetic One Minute Means from world wide observatories -
Federal
Geomagnetic Observatory Hourlyl Data
National Oceanic and Atmospheric Administration, Department of Commerce —
Geomagnetic Hourly Averages from world wide observatories -
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
Auroral Electrojet (AE, AL, AO, AU) - A Global Measure of Auroral Zone Magnetic Activity
National Oceanic and Atmospheric Administration, Department of Commerce —
The AE index is derived from geomagnetic variations in the horizontal component observed at selected (10-13) observatories along the auroral zone in the northern... -
Federal
NCEI Marine Geology Data Archive
National Oceanic and Atmospheric Administration, Department of Commerce —
Marine Geologic data compilations and reports in the NCEI archive are from academic and government sources around the world. Over ten terabytes of analyses,... -
Federal
High Definition Geomagnetic Model 2021 Real-Time Disturbance Calculator
National Oceanic and Atmospheric Administration, Department of Commerce —
The High Definition Geomagnetic Model (HDGM) is a global, high resolution model of the Earth's geomagnetic main and crustal field, providing magnetic field values... -
Federal
Geomagnetic Observatory 2.5 Minute Data
National Oceanic and Atmospheric Administration, Department of Commerce —
Geomagnetic variation data with 2.5 minute resolution -
Federal
Magnetometer Data recovered from 35mm film
National Oceanic and Atmospheric Administration, Department of Commerce —
The L57 CDMP recovery project takes magnetometer data on 35mm film stored at the archive's climate controlled warehouse and digitizes them. -
Federal
World Magnetic Model 2020
National Oceanic and Atmospheric Administration, Department of Commerce —
The World Magnetic Model is the standard model used by the U.S. Department of Defense, the U.K. Ministry of Defence, the North Atlantic Treaty Organization (NATO) and... -
Federal
High Definition Geomagnetic Model 2020
National Oceanic and Atmospheric Administration, Department of Commerce —
The High Definition Geomagnetic Model (HDGM) is a global, high resolution model of the Earth's geomagnetic main and crustal field, providing magnetic field values... -
Federal
Downhole Logging Data from the Deep Sea Drilling Project
National Oceanic and Atmospheric Administration, Department of Commerce —
Digital downhole wire-line logging data from the Deep Sea Drilling Project (DSDP) previously available from NGDC on CD-ROM are now available from the Borehole... -
Federal
Age, spreading rates, and spreading asymmetry of the world's ocean crust
National Oceanic and Atmospheric Administration, Department of Commerce —
The authors present four companion digital models of the age, age uncertainty, spreading rates and spreading asymmetries of the world's ocean basins as geographic and... -
Federal
International Geomagnetic Reference Field - 11th Generation
National Oceanic and Atmospheric Administration, Department of Commerce —
The eleventh generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2009 by the International Association of Geomagnetism and... -
Federal
Aeromagnetic Regional Grid Data
National Oceanic and Atmospheric Administration, Department of Commerce —
Several regions are represented in this unique collection of earth surface measurements of magnetic field parameters and their related anomalies. The DNAG Magnetics... -
Federal
Geomagnetic Indices Bulletin (GIB)
National Oceanic and Atmospheric Administration, Department of Commerce —
The Geomagnetic Indices Bulletin is a one page sheet containing the magnetic indices Kp, Ap, Cp, An, As, Am and the provisional aa indices. The bulletin is published...