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Earth's magnetic field (and the surface magnetic field) is approximately a magnetic dipole, with the magnetic field S pole near the Earth's geographic north pole (see Magnetic North Pole) and the other magnetic field N pole near the Earth's geographic south pole (see Magnetic South Pole). This makes the compass usable for navigation. The cause of the field can be explained by dynamo theory. A magnetic field extends infinitely, though it weakens with distance from its source. The Earth's magnetic field, also called the geomagnetic field, which effectively extends several tens of thousands of kilometres into space, forms the Earth's magnetosphere. A paleomagnetic study of Australian red dacite and pillow basalt has estimated the magnetic field to be at least 3.5 billion years old
What else can I help you with?
What drives the solar magnetic cycle?
The solar magnetic cycle is driven by the magnetic flux.
What solar can increase the solar wind?
magnetic fields
How does temperature change in the layers of the atmosphere?
It depends on their position and the way solar energy is absorbed.
How does the Sun's solar maximum change the Climate?
Scientists may have teased out a tenuous connection between solar cycles and climate, such that earth slightly heats as the 11 year solar maximum approaches and passes, and cools again slightly afterwards.
What solar phenomena causes magnetic storm?
Solar flares
Does Earth's magnetic field change?
Yes constantly, it is affected by the Solar wind and about every 100 thousand years the poles flip.
When the polarity of the Suns magnetic field is taken into account the solar activity cycle last?
The solar activity cycle, which includes the solar maximum and solar minimum phases, lasts about 11 years. This cycle correlates with the flipping of the Sun's magnetic field every 11 years. This is known as the solar magnetic activity cycle.
What has the author T E Berger written?
T. E. Berger has written: 'On the dynamics of small-scale solar magnetic elements' -- subject(s): Morphology, Magnetic flux, Magnetic field configurations, Solar magnetic field
What has the author B Coppi written?
B. Coppi has written: 'Magnetic energy conversion processes and solar flares' -- subject(s): Plasma turbulence, Solar flares, Solar magnetic fields
What produces the sun's magnetic fields?
The sun's magnetic fields are mainly produced by the movement of electrically charged particles within its interior. This process, known as the solar dynamo, generates complex magnetic fields that influence solar activity like sunspots and solar flares.
What has the author M J Hagyard written?
M. J Hagyard has written: 'Studies of solar magnetic fields during the solar maximum year' -- subject(s): Observations, Solar magnetic fields
What has the author Robert W Noyes written?
Robert W. Noyes has written: 'Study of magnetic motions in the solar photosphere and their implications for heating the solar atmosphere' -- subject(s): Astrophysics, Chromosphere, Dynamic characteristics, Magnetic field configurations, Photosphere, Solar magnetic field
