Radar observations of two-dimensional turbulence in the equatorial electrojet, 2
Observations with an altitude resolution of about 1 km were made with the large, vertically directed 50-MHz radar system at the Jicamarca Radar Observatory during the day, when the electrojet was strong. Type 1 ('two stream') echoes were seen in a limited range of altitudes, with Doppler shifts corresponding to upward and downward motion at the acoustic velocity. Most of the radar returns were due to type 2 echoes, however. The direction of motion of the type 1 waves sometimes reversed in as little as 1 s, supporting a turbulent model of the electrojet region. During the day the upgoing type 1 waves were observed to be somewhat more easily excited than the downgoing waves, an effect similar to an east-west asymmetry noted in earlier studies. The correspondence between the Jicamarca radar observations and rocket measurements in India is discussed. (AIP)
- Research Organization:
- School of Electrical Engineering, Cornell University, Ithaca, New York 14850
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-33-027123
- OSTI ID:
- 4007047
- Journal Information:
- J. Geophys. Res., v. 81, no. 1, pp. 130-134, Journal Name: J. Geophys. Res., v. 81, no. 1, pp. 130-134; ISSN JGREA
- Country of Publication:
- United States
- Language:
- English
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