Geomagnetism Program

Data and Tools

USGS Geomagnetism Program Data, Inquiries and Specialized Data Requests:
Abram Claycomb, Data Management: Software Developer

Geomagnetism Plots

Geomagnetism Plots

View realtime display of USGS geomagnetic observatory data feeds and derived products.

View Plots

Mailing Lists

geomag-data - Questions, discussion and annuncements for data products and access.

geomag-operations - Observatory-related announcements

geomag-research - Questions, discussion and announcements about research and outreach.

Filter Total Items: 7
Date published: July 27, 2020

2012 Geomagnetic Repeat Station Data

Repeat Stations are temporary magnetic installations, where the Earth’s magnetic field, or geomagnetic field, is measured for several days, with the goal of producing mean values of the vector components of the field, when the geomagnetic field is in a quiescent state. The data consist of approximately 72 hours of the vector magnetic field variations at each site plus calibrati

Date published: May 5, 2020

Webservice for Geomagnetism Data

API information for accessing geomagnetism data.

Date published: May 5, 2020

Programmatic Access to Geomagnetism Data

geomag-algorithms python library.

Date published: July 25, 2018

Other Sources of Data

Non-USGS cooperators and partners, as well as others with geomagnetism data.

Date published: July 21, 2018

Declination of the Earth 1590–1990

Animations showing the changes in the Earth's magnetic field.

Date published: July 19, 2018

Disturbance Storm Time (Dst) Display

Dst data from USGS observatories as well as other world partners.

Date published: January 1, 2010

USGS Geomagnetism Program: Magnetic Disturbance Movies

Movie-maps of low-latitude horizontal-intensity magnetic disturbance are derived from magnetic vector time series data collected at multiple ground-based observatories. Using a technique similar to that used in the calculation of Dst, a quiet time baseline is subtracted from the time series from each observatory. The remaining disturbance time series are shown in a polar coordinate system that...