Mars’ Background Free Oscillations | INSTITUT DE PHYSIQUE DU GLOBE DE PARIS

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  Mars’ Background Free Oscillations

Type de publication:

Journal Article

Source:

Space Science review, Volume 215, Ticket 1, p.13 (2019)

ISBN:

1572-9672

Résumé:

<p>Observations and inversion of the eigenfrequencies of free oscillations constitute powerful tools to investigate the internal structure of a planet. On Mars, such free oscillations can be excited by atmospheric pressure and wind stresses from the Martian atmosphere, analogous to what occurs on Earth. Over long periods and on a global scale, this phenomenon may continuously excite Mars’ background free oscillations (MBFs), which constitute the so-called Martian hum. However, the source exciting MBFs is related both to the global-scale atmospheric circulation on Mars and to the variations in pressure and wind at the planetary boundary layer, for which no data are available.</p>