Definition of geomagnetic
:of or relating to terrestrial magnetism
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Recent Examples of geomagnetic from the Web
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Michiganders across the state were treated to a rare July northern lights show over the past few days thanks to a geomagnetic storm from the sun.
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The geomagnetic storm quickly turned into a Twitter storm, with people posting photos and videos of the famous Lights.
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The lights are expected to come as the result of a geomagnetic storm caused by giant clouds of solar plasma produced by solar flares.
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The geomagnetic field fluctuates wildly during a storm, like the wind during a hurricane, and that creates electrical currents here on Earth.
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A geomagnetic storm triggered by a burst of solar energy could overwhelm the nation’s power grid and shut down cell towers and communication networks.
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Earth is protected from the solar wind by its magnetic field; however some particles manage to enter the atmosphere, producing geomagnetic storms and auroras such as the northern lights.
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The Soviets and Americans also worked together to further space exploration in the 1960s and 1970s—exchanging weather data from and launching new meteorologic satellites and jointly mapping the earth's geomagnetic field.
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Aurora are caused by geomagnetic storms which occur when the sun blasts high-energy particles toward Earth.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geomagnetic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of geomagnetic
1904
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