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  1. Earth's magnetic field - Wikipedia

    Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged …

  2. Geomagnetic field | Definition, Strength, & Facts | Britannica

    Oct 8, 2025 · Geomagnetic field, magnetic field associated with Earth. It is primarily dipolar (i.e., it has two poles, the north and south magnetic poles) on Earth’s surface. Away from the surface …

  3. Introduction to Geomagnetism | U.S. Geological Survey

    The geomagnetic field is used to explore the dynamics of Earth’s interior and its surrounding space environment, and geomagnetic data are used for geophysical mapping, mineral …

  4. Introduction to Geomagnetism | Geomag

    The geomagnetic field protects the Earth's atmosphere against charged particles from the solar wind. Rapid and long-term changes in the field are monitored by low-orbiting satellites and a …

  5. A Weak Spot in Earth's Magnetic Field Is Growing, but Scientists …

    3 days ago · A Weak Spot in Earth’s Magnetic Field Is Growing, but Scientists Say Not to Worry. Here’s a Look at What Shields Us From Space Weather Our planet’s magnetosphere has …

  6. Strong (G3) Geomagnetic Storm WATCH Valid for 09 Dec 2025

    2 days ago · A full-halo coronal mass ejection (CME), associated with an M8.1 flare from Region 4299 at 20:39 UTC on 06 December, is expected to impact Earth early to midday on 09 …

  7. G3 geomagnetic storm conditions possible this week: What to …

    1 day ago · We could see strong G3 geomagnetic storm conditions this week. Here’s what to know.

  8. Fundamentals of Geomagnetism - Geographic Book

    Aug 11, 2024 · Geomagnetism is a complex field of study within geomorphology that explores the Earth’s magnetic properties. This article delves into the fundamentals of geomagnetism, …

  9. Geomagnetics | Earth’s Magnetic Field, Magnetism, …

    geomagnetics, branch of geophysics concerned with all aspects of the Earth’s magnetic field, including its origin, variation through time, and manifestations in the form of magnetic poles, …

  10. Fact Sheets | U.S. Geological Survey - USGS.gov

    Oct 16, 2024 · When sunspots are large and numerous, intense magnetic storms are likely to occur on the Earth. Magnetic storms can generate electric fields in the Earth, and these fields …