Density in the Tharsis Province from Mars Express Data

Details Density in the Tharsis Province from Mars Express Data Density in the Tharsis Province from Mars Express Data

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1174b&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1174

Physics

Scientific paper

The probe Mars Express (MEX) has been in orbit around Mars since 25 December 2003 and is still operating seven years later. The onboard Mars Express Radio Science Experiment (MaRS) has performed a series of 'gravity on target' experiments, which consist in measuring radio signal Doppler shifts as the spacecraft flies at low altitude (270-330 km) above targets of geophysical interest. These Doppler shifts can be converted into variations of the spacecraft velocity along the line-of-sight between the spacecraft and the Earth, which are attributed to anomalies in the gravitational field of Mars. Since anomalies of small wavelength are mainly due to variations in the density of the crust, the experiment provides constraints on the density of the crust at the target.

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