LATITUDE DEPENDENCE OF A FORBUSH-TYPE COSMIC-RAY INTENSITY DECREASE OBSERVED AT AIRCRAFT ALTITUDE

Journal Article · Thu Jan 01 04:00:00 EST 1959 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.113.302· OSTI ID:4258992

Storey, J R

During the aerial survey of the cosmic-ray nucleonic component along the longitude 145 E described in the previous paper, two southbound flights between geographic latitudes 5 S and 36 S were made under depressed cosmic- ray intensity following the Forbush-type decrease commencing August 4, 1957. Comparison of the intensity vs. latitude plot with that obtained during the northbound flights over the same route when quiet cosmic-ray conditions prevailed enabled the latitude dependence of the decrease to be determined. It is found that for the event investigated, the percentage decrease was independent of latitude over the range 5 S to 36 S geographic (14 S to 45 S geomagmetic) at the altitude of observation (475 g cm/sup -2/). However, comparison of data from two fixed stations, Lae (16 S geomagnetic) and Hobart (52 S geomagnetic), showed that this latitude independence did not extend to sea level. (auth)

• Research Organization: Univ. of Tasmania, Hobart
• NSA Number: NSA-13-010325
• OSTI ID: 4258992
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 113; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AIRCRAFT
COSMIC RADIATION
LEVELS
MEASURED VALUES
NUCLEONS
PHYSICS AND MATHEMATICS
VARIATIONS