Interplanetary scintillations
Conference
·
OSTI ID:4136905
- ed.
Macroscopic and microscopic features of interplanetary radio scintillations are described on the basis of 3- and 4-site observations. Data are presented which indicate that the assumption of a radially directed solar wind effectively frozen over time scales of less than 2 seconds is well justified, the average solar wind speed varies with solar latitude, and corotating streams and other transient features are clearly delineated by velocity and scintillation index enhancements. The 3-dimensional electron density spectrum is found to be represented by a power-law dependence on wave number, and a very close fit to observed scintillation indices at 10 to 180 deg from the sun is obtained for a simple power-law turbulence model. It is concluded that most radio sources either are broader in angular extent at 74 MHz than previously thought, or contain significant nonscintillating components. (IAA)
- Research Organization:
- Univ. of California, La Jolla
- NSA Number:
- NSA-33-008127
- OSTI ID:
- 4136905
- Country of Publication:
- United States
- Language:
- English
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