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Dayside ionosphere of Mars: Empirical model based on data from the MARSIS instrument

SYSNO ASEP	0366436
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Dayside ionosphere of Mars: Empirical model based on data from the MARSIS instrument
Author(s)	Němec, F. (CZ) Morgan, D. D. (US) Gurnett, D. A. (US) Duru, F. (US) Truhlík, Vladimír (UFA-U)_{RID, ORCID}
Source Title	Journal of Geophysical Research - ISSN 0148-0227 Roč. 116, - (2011), E07003/1-E07003/14
Number of pages	14 s.
Language	eng - English
Country	US - United States
Keywords	RADIO OCCULTATION MEASUREMENTS ; GLOBAL SURVEYOR OBSERVATIONS ; MARTIAN IONOSPHERE
Subject RIV	BN - Astronomy, Celestial Mechanics, Astrophysics
CEZ	AV0Z30420517 - UFA-U, BC-A (2005-2011)
UT WOS	000292834600002
DOI	10.1029/2010JE003789
Annotation	We present results of a systematic study of electron densities in the dayside Martian ionosphere measured by the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) instrument on board the Mars Express spacecraft. There are two distinct regions controlled by different physical mechanisms. The first region is located at altitudes up to about 5 neutral scale heights above the altitude of peak electron density. Electron densities in this region are well described by the basic Chapman theory. The observed small deviations can be most probably explained by the neutral scale height and electron temperature increasing with altitude rather than being constant. The second region is located at altitudes higher than about 10 neutral scale heights above the altitude of peak electron density. It is controlled primarily by diffusion, and the observed electron densities decrease exponentially with increasing altitude.
Workplace	Institute of Atmospheric Physics
Contact	Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019
Year of Publishing	2012
Electronic address	http://www.agu.org/pubs/crossref/2011/2010JE003789.shtml

Number of the records: 1