GEOMAGNETIC IMPLICATIONS OF THE COSMIC-RAY DIURNAL VARIATION AND ITS SPECTRUM. Final Project Report
Technical Report
·
OSTI ID:4070832
Contours are presented showing the cosmic -ray diurnal variation (CRDV) amplitude and phase, and the amplitude of the semidiurnal variation, as functions of latitude and longitude. These maps display relative extremes that correspond to extremes of geomagnetic field maps and indicate that the geomagnetic dipole and quadrupole moments, as measured at the earth's surface, significantiy affect the anisotropic part of the cosmic radiation. An explanation is given for the fact that the semidiurnal variation has appreciable amplitude only along part of the magnetic equator. The cosmic-ray anisotropy introduced by the solar system is found to come from a direction 75 to 100 deg east of the sun. Small CRDV components dependent on Greenwich time and sidereal time are discussed. 100 references. (auth)
- Research Organization:
- New York Univ., New York. Coll. of Engineering
- NSA Number:
- NSA-18-014757
- OSTI ID:
- 4070832
- Report Number(s):
- N63-19946
- Country of Publication:
- United States
- Language:
- English
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