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Mars Express status and highlights

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					        Mars Express
    status and highlights

        IKI, Moscow

      11 October 2010

      Olivier Witasse,
 on behalf of the entire Mars
Express project and scientific
            teams
Mars Express

                    ü 8500+ orbits completed

                    ü The mission is healthy, the
                      operations are smooth

                    ü 500 peer-reviewed publications

                    ü The archive is regularly
 Launch June 2003     populated
   A broad range of scientific research on MEX
                                                                          Upper
                                                                          atmosphere:
                Study of the Phobos and Deimos
                                                                          Interaction
                moons: Mass, volume and density
                                                           Atmospheric    with the solar
                determination, subsurface structure,
                                                           science:       wind, escape,
                surface characterization, interaction
                                                           composition,   exosphere,
                with the solar wind, ephemerids.
                                                           density,       thermosphere,
                                                           dynamics,      ionosphere,
                                        Surface            thermal,       airglow and
Investigation                           investigation:     clouds,        aurora
of gravity                              geology,           climate
anomalies,                              mineralogy,
and time                                seasonal
variations              Investigation   effects, climate
of the                  of subsurface
gravity field           structures




   Title : 28-05-2005                                                               Page 3  
Mission extension status
ü Firm up to the end of 2010; 



ü Operations in 2011-2012: to be confirmed in November;



ü Operations in 2013-2014: scientific request being 
  evaluated. Decision expected in November.
Science case 2013-2014
ü Acquisition of a data set on the atmosphere over a full solar cycle (10-12 
  years), and at solar maximum;
ü Monitoring of time dependence of evolving processes (ice and frost, 
  atmospheric cycles, etc..); 
ü Exploration of Phobos;
ü Improvement of the map of methane by 25 % in spatial resolution;
ü Radar sounding of the North Polar Cap under much better illumination 
  conditions (end of 2014);
ü Improvement of the HRSC high resolution global coverage (up to ~ 70-75%), 
  especially in areas poorly covered such as the Southern and Northern mid-
  latitudes;
ü Study of the deepest night ever at pericenter   (-50º solar elevation angle in 
  2014).
Scientific highlights 2010

   ü 100 papers in 2010 !

   ü March 2010: Phobos closest flyby campaign
   ü March-April : Special aeronomy campaign
   ü June 2010: Detection of hydrated minerals in the Northern 
     plains, paper in Science led by the OMEGA team
   ü May 2010: Aurorae are back
   ü July 2010: Methane map, paper in press in PSS by the PFS 
     team
March 2010 Phobos campaign (1)
                  Phobos nadir-channel image from HRSC,
                  acquired during orbit 7915 (7 March 2010).
                  Resolution: about 4.4 meters per pixel
                  Credits: ESA/DLR/FU Berlin (G. Neukum)




                                  Courtesy G. Neukum
March 2010 Phobos campaign (2)

                         Preliminary results of the gravity
                         experiment. The x-axis displays 
                         The time, in seconds, from closest
                         approach. The curve shows, in 
                         grey, the frequency jump of the 
                         MEX radio signal due to the Phobos
                         Gravity. The blue curve is a model,
                         assuming Phobos being 
                         homogenous. The team is now
                         analysing the small differences 
                         between the grey and blue curves,
                         which contain the information on
                         the inhomogeneities inside Phobos.
Aeronomy campaigns
Martian aurorae
 Probability to be on a close field lines (Brain et al. 2009)




                                                                May 2010:
                                                                    the
                                                                  longest
                                                                event ever
                                                                 recorded
                                                                 ~30 sec.
Wet era on early Mars was global
 Published in “Science”, June 2010:  ESA’s Mars Express and NASA’s Mars 
 Reconnaissance Orbiter have discovered hydrated silicate minerals in the northern 
 lowlands of Mars, a clear indication that water once flowed there.  


                                              Lyot crater is 210 km in diameter. The blue 
                                              lines show the swathes of data taken by the 
                                              Mars Express OMEGA.  The small red boxes 
                                              correspond to CRISM measurements.  The 
                                              asterisks show the locations where hydrated 
                                              minerals were detected.  The OMEGA 
                                              swathes were acquired in December 2004 
                                              (left) and March 2008 (right). The CRISM 
                                              observations were taken between January 
                                              2008 and April 2010.
                                                
                                              Credits: NASA/ESA/JPL-Caltech/JHU-APL/IAS.
Methane map (Northern Fall)




                          Geminale et a;. 2010, in press
Recent HRSC web releases (1)
                Melas Chasma
Recent HRSC web releases (2)
                 Orcus Patera
Concluding remarks

ü Excellent scientific productivity, lots of results every
  months

ü Good archive for the scientific community

ü Ready to go until end of 2014

ü Ready to work with MSL, Yinghuo-1, PhSRM, MAVEN

ü Ready to pave the way for the 2016 ESA-NASA orbiter

				
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posted:7/25/2013
language:English
pages:15