Thermal emissions near the plasma frequency observed in the daytime equatorial electrojet

Details Thermal emissions near the plasma frequency observed in the daytime equatorial electrojet Thermal emissions near the plasma frequency observed in the daytime equatorial electrojet

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsa41a..04s&link_type=abstract

American Geophysical Union, Spring Meeting 2002, abstract #SA41A-04

Computer Science

Sound

2494 Instruments And Techniques, 2400 Ionosphere, 2411 Electric Fields (2712), 2415 Equatorial Ionosphere

Scientific paper

HF wave receivers that utilize short (29 cm tip-to-tip) electric field double probes were flown on a series of sounding rockets in the daytime equatorial electrojet from Alcantara, Brazil in September-October 1994. Broadband data in the frequency range of 10 kHz to 5 MHz were transmitted to the ground by directly modulating dedicated transmitters. We report results from one flight (NASA 21.113) in which the data from the wave receiver reveals the presence of faint thermal emissions near the local plasma frequency. The emissions were observed above approximately 95 km on both the upleg and downleg and through the rocket apogee of 110.5 km. The dominant frequency clearly varies as a function of the plasma density and is directly compared with simultaneously measured Langmuir probe density data. The frequency spread is approximately 10% and may be related to the plasma temperature. Spin modulation effects suggest that the wavelengths of the emissions were short (few meters or less). We interpret the data in view of natural thermal emissions near the local plasma frequency and discuss their implications for two-stream and other plasma instabilities also observed on the same flight.

Affiliated with

Also associated with

No associations

Rating

Thermal emissions near the plasma frequency observed in the daytime equatorial electrojet does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Thermal emissions near the plasma frequency observed in the daytime equatorial electrojet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal emissions near the plasma frequency observed in the daytime equatorial electrojet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1722339