Intriguing observations of elevated temperatures around double-layer Sporadic- E

Details Intriguing observations of elevated temperatures around double-layer Sporadic- E Intriguing observations of elevated temperatures around double-layer Sporadic- E

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa33a1629b&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA33A-1629

Computer Science

Sound

2411 Electric Fields (2712), 2415 Equatorial Ionosphere, 2437 Ionospheric Dynamics, 2467 Plasma Temperature And Density

Scientific paper

As part of the of the EQUIS II sounding rocket campaign, two separate rockets were launched into thin radar scattering layers that were observed as precursors to nighttime Equatorial Spread-F. The payloads carried an RF Plasma Impedance Probe, an internally heated sweeping Langmuir probe, and four booms for double- probe type E-field measurement. We present the in-situ density and temperature measurements of the two flights. The ion saturation region analysis of the Langmuir Probe I-V curve produces absolute ion density that matches within 5% of the absolute electron density derived from the impedance probe. The electron retardation region analysis of the I-V curve gives electron temperatures with magnitudes that are in general agreement with averaged models such as the IRI but also show unusual structure in the F-region as well as elevated temperatures around a double-layer sporadic-E that was observed on one of the flights. While the F-region structure still remains unexplained, this work presents possible mechanisms for the temperature enhancement around the sporadic-E double-layer.

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