K INDEX
The measure of thunderstorm potential based on the vertical temperature lapse rate, the moisture content of the lower atmosphere and the vertical extent of the moist layer. | ||||
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K-index definition was found in categories: Society & Culture(1) Encyclopedia(1)
K-index Definition from Society & Culture Dictionaries & Glossaries
| Amateur Radio Glossary |
K-index
A measure of the Earth’s magnetic field as measured at Boulder, Colorado. Propagation conditions improve with lower measurement numbers. See URL:Propagation
A measure of the Earth’s magnetic field as measured at Boulder, Colorado. Propagation conditions improve with lower measurement numbers. See URL:Propagation
K-index Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
K-index
The K-index quantifies disturbances in the horizontal component of earth's magnetic field with an integer in the range 0-9 with 1 being calm and 5 or more indicating a geomagnetic storm. It is derived from the maximum fluctuations of horizontal components observed on a magnetometer during a three-hour interval. The conversion table from maximum fluctuation (nT) to K-index, varies from observatory to observatory in such a way that the historical rate of occurrence of certain levels of K are about the same at all observatories. In practice this means that observatories at higher geomagnetic latitude require higher levels of fluctuation for a given K-index.
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