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Energetics and Structure of the Lower E Region Associated with Sporadic E Layer : Volume 26, Issue 9 (25/09/2008)

By Oyama, K.-i.

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Book Id: WPLBN0004001883
Format Type: PDF Article :
File Size: Pages 8
Reproduction Date: 2015

Title: Energetics and Structure of the Lower E Region Associated with Sporadic E Layer : Volume 26, Issue 9 (25/09/2008)  
Author: Oyama, K.-i.
Volume: Vol. 26, Issue 9
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2008
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Yokoyama, T., Hibino, K., Liu, J. Y., Oyama, K., Pfaff, R., & Abe, T. (2008). Energetics and Structure of the Lower E Region Associated with Sporadic E Layer : Volume 26, Issue 9 (25/09/2008). Retrieved from http://www.ebooklibrary.org/


Description
Description: Institute of Space Science, National Central University, NO300, Jhongda Rd., Jhongli City, Taoyuan, Taiwan, China. The electron temperature (Te), electron density (Ne), and two components of the electric field were measured from the height of 90 km to 150 km by one of the sounding rockets launched during the SEEK-2 campaign. The rocket went through sporadic E layer (Es) at the height of 102 km–109 km during ascent and 99 km–108 km during decent, respectively. The energy density of thermal electrons calculated from Ne and Te shows the broad maximum in the height range of 100–110 km, and it decreases towards the lower and higher altitudes, which implies that a heat source exists in the height region of 100 km–110 km. A 3-D picture of Es, that was drawn by using Te, Ne, and the electric field data, corresponded to the computer simulation; the main structure of Es is projected to a higher altitude along the magnetic line of force, thus producing irregular structures of Te, Ne and electric field in higher altitude.

Summary
Energetics and structure of the lower E region associated with sporadic E layer

Excerpt
Hedin, A.: MSIS-86 thermospheric model, J. Geophys. Res., 92(A5), 4649–4662, 1987.; Langmuir, I. and Motto-Smith, H.: Studies of electric discharges in gases at low pressures Part I–V, General Electric Rev., 28, 449–455, 538–548, 616–623, 762–771, 810–820, 1924.; Larsen, M. F., Yamamoto, M., Fukao, S., Tsunoda, R. T., and Saito, A.: Observation of neutral winds, wind shears, and wave structure during a sporadic-E/QP event, Ann. Geophys., 23, 2369–2375, 2005.; Oyama, K.-I. and Hirao, K.: Application of a glass sealed Langmuir probe to ionosphere study, Rev. Sci. Instr., 47, 101–107, 1976.; Oyama, K.-I., Abe, T., Mori, H., and Liu, J. Y.: Electron temperature in nighttime sporadic E layer at mid-latitude, Ann. Geophys., 26, 533–541, 2008.; Pfaff, R., Freudenreich, H., Yokoyama, T., Yamamoto, M., Fukao, S., Mori, H., Otsuki, S., and Iwagami, N.: Electric field measurements of DC and long wavelength structures associated with sporadic-$E$ layers and QP radar echoes, Ann. Geophys., 23, 2319–2334, 2005.; Saito, S., Yamamoto, M., Fukao, S., Marumoto, M., and Tsunoda, R. T.: Radar observations of field-aligned plasma irregularities in the SEEK-2 campaign, Ann. Geophys., 23, 2307–2318, 2005.; Schutz, S. R. and Smith, L. G.: Electron temperature measurements in mid-latitude Sporadic E layers, J. Geophys. Res., 81, 3214–3220, 1976.; Valenzuela, A., Bauer, O., and Haerendel, G.: Balloon observation of ionospheric magnesium ions, J. Atmos. Terr. Phys., 43, 785–788, 1981.; Yamamoto, M., Fukao, S., Tsunoda, R. T., Pfaff, R., and Hayakawa, H.: SEEK-2 (Sporadic-E Experiment over Kyushu 2) – Project Outline, and Significance, Ann. Geophys., 23, 2295–2305, 2005.; Yokoyama, T., Yamamoto, M., and Fukao, S.: Computer simulation of polarization electric field as a source of midlatitude field-aligned irregularities, J. Geophys. Res., 108(A2), 1054(SIA2), doi:10.1029/2002JA009513, 2003.


 

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