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magnetogram
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magnetogram

geophysics
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Quick Summary

A magnetogram is an automatic record of magnetic phenomena, typically produced by a magnetograph. It is a key tool in geomagnetics, a branch of geophysics focused on Earth's magnetic field. Magnetograms are created by continuously measuring and recording variations in Earth's magnetic field at observatories.123

These records are essential for various applications, including creating world magnetic maps for navigation and surveying, correcting data for mineral and oil exploration, and studying the interaction between the Sun and Earth. Modern magnetic observatories use advanced instruments like proton-precession and flux-gate magnetometers to capture these detailed records.3

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
4 Britannica Sources
  1. geomagnetic field - Measurement of the field
  2. magnetogram
  3. geomagnetics
  4. Earth exploration - Magnetic methods

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