Radar Soundings of the Ionosphere of Mars

Author:

Gurnett D. A.1234,Kirchner D. L.1234,Huff R. L.1234,Morgan D. D.1234,Persoon A. M.1234,Averkamp T. F.1234,Duru F.1234,Nielsen E.1234,Safaeinili A.1234,Plaut J. J.1234,Picardi G.1234

Affiliation:

1. Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA.

2. Max Planck Institute for Solar System Research, 37191 Katlenburg-Lindau, Germany.

3. Jet Propulsion Laboratory, Pasadena, CA 91109, USA.

4. Infocom Department, “La Sapienza” University of Rome, 00184 Rome, Italy.

Abstract

We report the first radar soundings of the ionosphere of Mars with the MARSIS (Mars Advanced Radar for Subsurface and Ionosphere Sounding) instrument on board the orbiting Mars Express spacecraft. Several types of ionospheric echoes are observed, ranging from vertical echoes caused by specular reflection from the horizontally stratified ionosphere to a wide variety of oblique and diffuse echoes. The oblique echoes are believed to arise mainly from ionospheric structures associated with the complex crustal magnetic fields of Mars. Echoes at the electron plasma frequency and the cyclotron period also provide measurements of the local electron density and magnetic field strength.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference25 articles.

1. Mars Express: A European Mission to the Red Planet SP-1240 2004

2. Mars Express: A European Mission to the Red Planet SP-1240 2004

3. The design of swept-frequency topside sounders

4. The interpretation of topside sounder ionograms

5. Ionospheric irregularities observed by topside sounders

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