A comparison between HF partial reflection profiles from the D-region and simultaneous Langmuir probe electron density measurements

Details A comparison between HF partial reflection profiles from the D-region and simultaneous Langmuir probe electron density measurements A comparison between HF partial reflection profiles from the D-region and simultaneous Langmuir probe electron density measurements

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jatp...44..843h&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 44, Oct. 1982, p. 843-851, 853, 854. Research supported by the Australian R

Physics

10

D Region, Electrostatic Probes, Ionospheric Electron Density, Ionospheric Propagation, Radio Echoes, Atmospheric Stratification, Computerized Simulation, Electron Density Profiles, High Frequencies, Isotropic Turbulence, Radio Scattering, Rocket-Borne Instruments, Specular Reflection

Scientific paper

The nature of the scatterers which cause partial HF radio reflections from the D-region is to a large extent unknown. In an attempt to clarify this situation, rocket-borne Langmuir probes were fired from Woomera, Australia (30 deg 56 min S, 136 deg 31 min E) to obtain measurements of the fine structure of the D-region electron density. These measurements are compared with simultaneous HF partial reflection observations made at a frequency of 1.98 MHz. The principal features in the Langmuir probe electron density results were a small ledge at approximately 81 km, a large and rapid increase in electron density at 83-85 km, and a region of rapid fluctuation at approximately 92 km. Partial reflections appear to be produced from all these regions. Computer simulations of the HF amplitude profile expected for the electron density profile found by the Langmuir probe have been performed and are discussed.

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