SECULAR VARIATION OF THE COSMIC-RAY EQUATOR AND THE LATITUDE KNEE AT SEA LEVEL

Journal Article · Mon Jan 01 04:00:00 EST 1962 · J. Phys. Soc. Japan

OSTI ID:4740251

Kodama, M; Fukushima, S; Makino, T

During 1956-61 eight latitude surveys of cosmic-ray intensity were carried out along the same ship route between Japan and the Antarctic. A fixed position of the cosmic ray equator at 107 deg E found throughout the surveys, 8.1 plus or minus 0.2 deg N geographic latitude, suggests few distortion effects of the geomagnetic field on cosmic rays due to the interaction of the dipole field with interplanetary medium. A fixed position of the latitude knee at 30 deg E found throughout the surveys, 35.4 plus or minus 0.4 deg S geomagnetic latitude, means that the knee around 30 deg E is subjected to the intense geomagnetic anomaly around Cape Town rather than some mechanism outside the earth's magnetic field. (auth)

• Research Organization: Inst. of Physical and Chemical Research, Tokyo
• NSA Number: NSA-17-012958
• OSTI ID: 4740251
• Journal Information: J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 17: Suppl. A-II
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

COSMIC RADIATION
DIPOLES
EARTH
GEOPHYSICS
MAGNETIC FIELDS
PHYSICS
VARIATIONS