BALLOON MEASUREMENT OF SOLAR COSMIC RAYS AT FORT CHURCHILL, CANADA, DURING JULY 1959

Journal Article · Sun Oct 01 04:00:00 EDT 1961 · J. Geophys. Research

DOI:https://doi.org/10.1029/JZ066i010p03095· OSTI ID:4822673

Earl, J A

Balloon measurements, obtained over Fort Churchill, Canada, of solar cosmic ray intensity during July 1959 are reported. The intensities observed on July 11, 12, and 18 were many times as great as those observed simultaneously at Minneapolis. In particular, the excess Geiger counter rate at Fort Churchill was 100 plus or minus 25 times as great as the corresponding rate observed at Minneapolis during a small influx of radiation which occurred at 0730 UT on July 11 (before the magnetic storm that began at 1620 UT July 11). Measurements of the dependence of excess rate on atmospheric depth indicate that the energy spectrum of the solar cosmic rays did not change significantly over a period of 10 days. (auth)

• Research Organization: Univ. of Minnesota, Minneapolis
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-000911
• OSTI ID: 4822673
• Journal Information: J. Geophys. Research, Journal Name: J. Geophys. Research Vol. Vol: 66
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AMINO ACIDS
BALLOONS
BLOOD SERUM
COSMIC RADIATION
EARTH
GEIGER-MUELLER COUNTERS
LEVELS
MAGNETIC FIELDS
MAN
MEASURED VALUES
PHYSICS
PRODUCTION
PROTEINS
SUN
TURBULENCE
VARIATIONS