@article{Steckiewicz:2015:10.1002/2015GL065257,
author = {Steckiewicz, M and Mazelle, C and Garnier, P and André, N and Penou, E and Beth, A and Sauvaud, J-A and Toublanc, D and Mitchell, DL and McFadden, JP and Luhmann, JG and Lillis, RJ and Connerney, JEP and Espley, JR and Andersson, L and Halekas, JS and Larson, DE and Jakosky, BM},
doi = {10.1002/2015GL065257},
journal = {Geophysical Research Letters},
pages = {8877--8884},
title = {Altitude dependence of nightside Martian suprathermal electron depletions as revealed by MAVEN observations},
url = {http://dx.doi.org/10.1002/2015GL065257},
volume = {42},
year = {2015}
}

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TY  - JOUR
AB  - The MAVEN (Mars Atmosphere and Volatile EvolutioN) spacecraft is providing new detailed observations of the Martian ionosphere thanks to its unique orbital coverage and instrument suite. During most periapsis passages on the nightside ionosphere suprathermal electron depletions were detected. A simple criterion was implemented to identify the 1742 depletions observed from 16 November 2014 to 28 February 2015. A statistical analysis reveals that the main ion and electron populations within the depletions are surprisingly constant in time and altitude. Absorption by CO2 is the main loss process for suprathermal electrons, and electrons that strongly peaked around 6 eV are resulting from this interaction. The observation of depletions appears however highly dependent on altitude. Depletions are mainly located above strong crustal magnetic sources above 170 km, whereas the depletions observed for the first time below 170 km are globally scattered onto the Martian surface with no particular dependence on crustal fields.
AU  - Steckiewicz,M
AU  - Mazelle,C
AU  - Garnier,P
AU  - André,N
AU  - Penou,E
AU  - Beth,A
AU  - Sauvaud,J-A
AU  - Toublanc,D
AU  - Mitchell,DL
AU  - McFadden,JP
AU  - Luhmann,JG
AU  - Lillis,RJ
AU  - Connerney,JEP
AU  - Espley,JR
AU  - Andersson,L
AU  - Halekas,JS
AU  - Larson,DE
AU  - Jakosky,BM
DO  - 10.1002/2015GL065257
EP  - 8884
PY  - 2015///
SN  - 0094-8276
SP  - 8877
TI  - Altitude dependence of nightside Martian suprathermal electron depletions as revealed by MAVEN observations
T2  - Geophysical Research Letters
UR  - http://dx.doi.org/10.1002/2015GL065257
UR  - http://hdl.handle.net/10044/1/41061
VL  - 42
ER  - 

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