Lunar daily distance numbersD andD′ |
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| Authors: | Jagdish Chandra Gupta |
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| Institution: | 1. Division of Geomagnetism, Dept. Energy, Mines and Resources, Ottawa, Canada
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| Abstract: | In analyses of the effect of variation of the Earth-Moon distance on geophysical phenomena, it is customary to arrange the geophysical data according to the dates of apogee and perigee. However, lunar distances at apogee and especially at perigee vary within wide limits from month to month. A new daily indexD' of lunar distance is defined to permit a more precise determination of effects related to lunar distance. It is readily calculated by a computer program. |
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