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ring current |
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ring current [′riŋ ‚kə·rənt] (geophysics) A westward electric current which is believed to circle the earth at an altitude of several earth radii during the main phase of geomagnetic storms, resulting in a large worldwide decrease in the geomagnetic field horizontal component at low latitudes. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| By linking to currents much closer to Earth, the ring current plays a pivotal role in disturbing power grids on the ground. IMAGE has provided us with the first global maps of helium ions surrounding the Earth, the first images of the ring current, the first global images of the protons that bombard the atmosphere, and the first radar maps of ion and electron densities throughout the magnetosphere. The boards are initially targeted at developers and integrators, and include a bundle of accessories, including station loop and ring current power supply, and station/trunk interface adapters. |
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