|
gptkbp:instanceOf
|
geomagnetic field
|
|
gptkbp:affects
|
gptkb:wildlife
gptkb:auroras
compass navigation
|
|
gptkbp:alsoKnownAs
|
geomagnetic field
|
|
gptkbp:causedBy
|
motion of molten iron in outer core
|
|
gptkbp:declination
|
varies by longitude
|
|
gptkbp:discoveredBy
|
gptkb:William_Gilbert
|
|
gptkbp:firstDescribed
|
1600
|
|
gptkbp:generation
|
gptkb:Earth's_outer_core
|
|
gptkbp:hasAnomalies
|
gptkb:South_Atlantic_Anomaly
|
|
gptkbp:hasInclination
|
varies by latitude
|
|
gptkbp:hasIntensity
|
25 to 65 microteslas
|
|
gptkbp:hasNorthPole
|
geomagnetic north pole
|
|
gptkbp:hasSecularVariation
|
true
|
|
gptkbp:hasSouthPole
|
geomagnetic south pole
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Earth's Magnetic Field
|
|
gptkbp:importantFor
|
radio communication
marine navigation
aviation navigation
satellite operation
|
|
gptkbp:influenced
|
gptkb:ionosphere
gptkb:Van_Allen_radiation_belts
magnetometer
|
|
gptkbp:isDipole
|
approximately
|
|
gptkbp:isDynamic
|
true
|
|
gptkbp:isMeasuredIn
|
tesla
gauss
|
|
gptkbp:lastReversal
|
gptkb:Brunhes–Matuyama_reversal
|
|
gptkbp:lastReversalDate
|
about 780,000 years ago
|
|
gptkbp:mappedBy
|
gptkb:International_Geomagnetic_Reference_Field
gptkb:World_Magnetic_Model
|
|
gptkbp:measures
|
magnetometer
|
|
gptkbp:monitors
|
satellites
ground observatories
|
|
gptkbp:partOf
|
gptkb:Earth
|
|
gptkbp:protectedBy
|
Earth from solar wind
Earth from cosmic radiation
|
|
gptkbp:reversalFrequency
|
irregular, every 200,000 to 300,000 years
|
|
gptkbp:reversesPolarity
|
geomagnetic reversal
|
|
gptkbp:studiedIn
|
geomagnetism
space scientists
geophysicists
navigation experts
|
|
gptkbp:subjectOf
|
paleomagnetism
space weather studies
|
|
gptkbp:bfsParent
|
gptkb:Magnetic_Field
|
|
gptkbp:bfsLayer
|
5
|