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The physical basis of geomagnetism and geomagnetic reversals
AIP Conference Proceedings, 1976Geomagnetism is the most familiar example of astrophysical magnetic field production. Our current understanding of the principles of magnetic field generation is briefly reviewed and the major outstanding problems are outlined, with particular emphasis on the Earth.
Levy Eugene H
exaly +2 more sources
2021
Geomagnetism deals with all aspects of the Earth's magnetic field, also called the geomagnetic field, that surrounds our habitat in the form of the magnetosphere. We cannot sense the geomagnetic field in any way, and instrumental measurements as continuous recordings or dedicated surveys are necessary to study it.
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Geomagnetism deals with all aspects of the Earth's magnetic field, also called the geomagnetic field, that surrounds our habitat in the form of the magnetosphere. We cannot sense the geomagnetic field in any way, and instrumental measurements as continuous recordings or dedicated surveys are necessary to study it.
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Geomagnetic mapping for geomagnetic matching navigation
SPIE Proceedings, 2008Geomagnetic field is the basic physics field of the Earth, which can't be destroyed or changed in the foreseeable future. Geomagnetic field don't require special service, therefore, it can be considered as a solid source of navigation information.
Xuegong Huang +3 more
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2020
Geomagnetic prospecting consists of studying the local deformation of the Earth’s magnetic field produced by differences in the properties of surrounding materials. As fire heats the ground, which transforms the magnetic behaviour of the materials, it leaves an indelible magnetic imprint, the presence of which is revealed by a local deformation of the ...
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Geomagnetic prospecting consists of studying the local deformation of the Earth’s magnetic field produced by differences in the properties of surrounding materials. As fire heats the ground, which transforms the magnetic behaviour of the materials, it leaves an indelible magnetic imprint, the presence of which is revealed by a local deformation of the ...
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The origin of geomagnetic jerks
Nature, 2002Geomagnetic jerks, which in the second half of the twentieth century occurred in 1969 (refs 1, 2), 1978 (refs 3, 4), 1991 (ref. 5) and 1999 (ref. 6), are abrupt changes in the second time-derivative (secular acceleration) of the Earth's magnetic field.
Jeremy, Bloxham +2 more
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Geomagnetic induction: the study of geomagnetic induction physics
Exploration Geophysics, 1986Fluctuating electric currents, flowing external to the earth in the ionosphere, the magnetosphere, and beyond, act as primary source fields which cause electromagnetic induction in the solid earth. Secondary electric currents (or 'eddy currents') are thus induced to flow in the earth's oceans, crust, and upper mantle.
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