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Electron Temperature in Nighttime Sporadic E Layer at Mid-latitude : Volume 26, Issue 3 (26/03/2008)

By Oyama, K.-i.

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Book Id: WPLBN0003979873
Format Type: PDF Article :
File Size: Pages 9
Reproduction Date: 2015

Title: Electron Temperature in Nighttime Sporadic E Layer at Mid-latitude : Volume 26, Issue 3 (26/03/2008)  
Author: Oyama, K.-i.
Volume: Vol. 26, Issue 3
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2008
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Mori, H., Liu, J. Y., Abe, T., & Oyama, K. (2008). Electron Temperature in Nighttime Sporadic E Layer at Mid-latitude : Volume 26, Issue 3 (26/03/2008). Retrieved from http://www.ebooklibrary.org/


Description
Description: Institute of Space Science, National Central University, Jhongda Rd., Jhongli, Taiwan. Electron temperature in the sporadic E layer was measured with a glass-sealed Langmuir probe at a mid-latitude station in Japan in the framework of the SEEK (Sporadic E Experiment over Kyushu)-2 campaign which was conducted in August 2002. Important findings are two fold: (1) electron temperature and electron density vary in the opposite sense in the height range of 100–108 km, and electron temperature in the Es layer is lower than that of ambient plasma, (2) electron temperature in these height ranges is higher than the possible range of neutral temperature.

These findings strongly suggest that the heat source that elevates electron temperature much higher than possible neutral temperature exists at around 100 km, and/or that the physical parameter values, which are used in the present theory to calculate electron temperature, are not proper.


Summary
Electron temperature in nighttime sporadic E layer at mid-latitude

Excerpt
Oyama, K.-I. and Hirao, K.: Application of a glass sealed Langmuir probe to ionospheric study, Rev. Sci. Instrum., 47, 101–107, 1976.; Oyama, K.-I.: A systematic study of several phenomena associated with contaminated Langmuir probes, Planet. Space Sci., 24, 87–89, 1976.; Andreyeva, L. A., Burakov, Yu. B., Katasev, L. A., Komrakov, G. P., Nesterev, V. P., Urarov, D. B., Khryukin, V. G., and Chasovitin, Yu. K.: Rocket investigations of the ionosphere at mid-latitudes, Space Res., 11, 1043–1050, 1971.; Aubry, M., Blanc, M., Clauvel, R., Taieb, C., Bowen, P. J., Norman, K., Willmore, A. P., Sayers, S., and Wager, J. H.: Some rocket results on sporadic E., Radio Sci., 1(2), 170–177, 1966.; Gleeson, L. G. and Axford, W. I.: Electron and ion temperature variations in temperate zone sporadic E layers, Planet. Space Sci., 15, 749–765, 1967.; Jain, R., Nath, N., and Setty, C. S. G. K.: On Joule heating of the equatorial electrojet E-region, J. Atmos. Terr. Phys., 43, 1189–1197, 1981.; Oya, H.: Development of gyro-plasma probe, Small Rocket Instrumentation Techniques, North Holland Publish Company, Amsterdam, 36–47, 1969.; Kurihara, J., Oyama, K.-I., Suzuki, K., and Iwagami, N.: Vibrational rotational temperature measurement of N2 in the lower thermosphere by the rocket experiment, Adv. Space Res., 32(5), 725–729, 2003.; Kurihara, J. and Oyama, K.-I.: Rocket-borne instrument for measuring vibrational-rotational temperature and density in the lower thermosphere, Rev. Sci. Instr., 76, 083101, doi:10.1063/1.1988189, 2005.; Oyama, K.-I. and Hirao, K.: Is $T_e$ equal to $T_n$ at the height of 100 to 120 Km?, Planet. Space Sci., 28, 207–211, 1980.; Oyama, K.-I.: Insitu measurements of $T_e$ in the lower ionosphere – A review, Adv. Space Res., 26(8), 1231–1240, 2000.; Rohde, V., Piel, A., Thiemann, H., and Oyama, K.- I.: Insitu Diagnostics of ionospheric plasma with the resonance cone technique, J. Geophys. Res., 98(A11), 19 163–19 172, 1993.; Schutz, S. R. and Smith, L. G.: Electron temperature measurements in the Mid-Latitude Sporadic E layers, J. Geophys. Res., 81(19), 3214–3220, 1976.; Szuszczewicz, E. P. and Holmes, J. C.: Observations of electron temperature gradients in Mid-Latitude $E_s$ layers, J. Geophys. Res., 82(32), 5073–5080, 1977.; Yamamoto, M., Fukao, S., Tsunoda, R. T., Phaff, R., and Hayaka, H.: SEEK-2 (Sporadic E Experiment over Kyushu 2)-Project outline and significance, Ann. Geophys., 23, 2295–2305, 2005.


 

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