Earth’s magnetic field

E781025
geomagnetic field planetary magnetic field

Earth’s magnetic field is the invisible, dynamic magnetic force surrounding our planet that shields it from solar wind and cosmic radiation and guides compass navigation.

Try in SPARQL Jump to: Surface forms Statements Referenced by

Observed surface forms (1)

Surface form Occurrences
Earth magnetosphere 1

Statements (48)

Predicate Object
instanceOf geomagnetic field ⓘ
planetary magnetic field ⓘ
affects power grids during geomagnetic storms ⓘ
radio wave propagation ⓘ
satellite operations ⓘ
alsoKnownAs geomagnetic field ⓘ
terrestrial magnetic field ⓘ
axisTiltRelativeToRotationAxis about 11 degrees ⓘ
createsRegion magnetosphere ⓘ
deflects charged particles from the Sun ⓘ
enables compass navigation ⓘ
evidencedBy paleomagnetism in rocks ⓘ
extendsTo magnetosphere ⓘ
several Earth radii into space ⓘ
generatedBy Earth’s outer core NERFINISHED ⓘ
Earth’s rotation ⓘ
convection of molten iron in the outer core ⓘ
geodynamo process ⓘ
hasAverageSurfaceStrength about 0.25 to 0.65 gauss ⓘ
about 25 to 65 microteslas ⓘ
hasComponent dipole component ⓘ
non-dipole components ⓘ
secular variation ⓘ
hasCurrentState north magnetic pole located near the geographic North Pole ⓘ
hasOriginAge at least 3 to 4 billion years ago according to geological evidence ⓘ
hasPolarity north magnetic pole ⓘ
south magnetic pole ⓘ
hasReversalFrequency irregular intervals of hundreds of thousands of years on average ⓘ
influences auroras ⓘ
space weather near Earth ⓘ
interactsWith ionosphere ⓘ
solar wind plasma ⓘ
isEssentialFor habitability of Earth as we know it ⓘ
long-term atmospheric retention ⓘ
locatedIn Earth’s surrounding space environment ⓘ
mappedBy International Geomagnetic Reference Field NERFINISHED ⓘ
World Magnetic Model NERFINISHED ⓘ
geomagnetic models ⓘ
measuredBy magnetometers ⓘ
northMagneticPoleDriftSpeed tens of kilometers per year in recent decades ⓘ
protectsFrom cosmic radiation ⓘ
solar wind ⓘ
studiedIn geomagnetism ⓘ
trapsParticlesIn Van Allen radiation belts NERFINISHED ⓘ
undergoes geomagnetic excursions ⓘ
geomagnetic reversals ⓘ
secular variation ⓘ
variesOver time ⓘ

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Earth’s outer radiation belt → isTrappedBy → Earth’s magnetic field ⓘ
Halley II → researchFocus → Earth’s magnetic field ⓘ
Manik Talwani → researchInterest → Earth’s magnetic field ⓘ
Cluster II → studies → Earth’s magnetic field ⓘ
this entity surface form: Earth magnetosphere