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A clear view of the multifaceted dayside ionosphere of Mars
Author(s) -
Withers Paul,
Fallows Kathryn,
Girazian Zachary,
Matta Majd,
Häusler Bernd,
Hinson David,
Tyler Len,
Morgan David,
Pätzold Martin,
Peter Kerstin,
Tellmann Silvia,
Peralta Javier,
Witasse Oliver
Publication year - 2012
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2012gl053193
Subject(s) - ionosphere , mars exploration program , electron density , geology , scale height , geophysics , atmospheric sciences , physics , electron , meteorology , astronomy , quantum mechanics
By examining electron density profiles from the Mars Express Radio Science Experiment MaRS, we show that the vertical structure of the dayside ionosphere of Mars is more variable and more complex than previously thought. The top of the ionosphere can be below 250 km (25% occurrence rate) or above 650 km (1%); the topside ionosphere can be well‐described by a single scale height (10%) or two/three regions with distinct scale heights (25% or 10%), where those scale heights range between tens and hundreds of kilometers; the main layer of the ionosphere can have a sharply pointed (5%), flat‐topped (6%), or wavy (8%) shape, in contrast to its usual Chapman‐like shape; a broad increase in electron density is detected at 160–180 km (10%); a narrow increase in electron density is sometimes found in strongly‐magnetized regions; and an additional layer is present between the M1 and M2 layers (3%).