Cosmic-ray intensity at Thule, Greenland, during 1962 and 1963 and a comparison with data from Mariner 2

Journal Article · Wed Jan 01 04:00:00 EST 1964 · Journal of Geophysical Research

DOI:https://doi.org/10.1029/JZ069i005p00807· OSTI ID:4075657

Neher, H. V.; Anderson, H. R.

During each of the summers of 1962 and 1963 six balloon flights were made at Thule, Greenland (geomagnetic latitude 88 deg N), in continuation of a program to follow the secular changes in primary cosmic rays. Similar flights at Thule were made during most of the years beginning in 1951. The flights usually extended over a period of at least two weeks to be sure that transient effects were minimized. Following the substantial increase from 1961 to 1962 of 20 per cent at high altitudes, a much smaller increase of 7.5 per cent occurred between 1962 and 1963. Three weeks after the last flight at Thule in 1962, data had started to be received from the Venus probe Mariner 2. This vehicle had aboard an ionization chamber that was compared with the balloon-borne chambers, both with gamma rays and with cosmic rays at high altitudes. From a comparison of the data from the two instruments a value of 21 per cent is derived for the albedo effect at the top of the atmosphere at Thule.

• Research Organization: California Inst. of Tech., Pasadena
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-014759
• OSTI ID: 4075657
• Journal Information: Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: 5 Vol. 69; ISSN JGREA2; ISSN 0148-0227
• Publisher: American Geophysical Union
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ALBEDO
ATMOSPHERE
BALLOONS
COSMIC RADIATION
EARTH
GAMMA RADIATION
GEOMAGNETIC COORDINATES
GREENLAND
IONIZATION CHAMBERS
LEVELS
MAGNETIC FIELDS
MARINER SPACE PROBES
MEASURED VALUES
PLANETS
REFLECTION
SPACE FLIGHT
SPACE VEHICLES
STRATOSPHERE
VARIATIONS