AbstractDYNAMO is a small multi-instrument payload aimed at characterizing current atmospheric escape, which is still poorly constrained, and improving gravity and magnetic field representations, in order to better understand the magnetic, geologic and thermal history of Mars. The internal structure and evolution of Mars is thought to have influenced climate evolution. The collapse of the primitive magnetosphere early in Mars history could have enhanced atmospheric escape and favored transition to the present arid climate. These objectives are achieved by using a low periapsis orbit. DYNAMO has been proposed in response to the AO released in February 2002 for instruments to be flown as a complementary payload onboard the CNES Orbiter to Mars (MO-07), foreseen to be launched in 2007 in the framework of the French PREMIER Mars exploration program. MO-07 orbital phase 2b (with an elliptical orbit of periapsis 170 km), and in a lesser extent 2a, offers an unprecedented opportunity to investigate by in situ probing the chemical and dynamical properties of the deep ionosphere, thermosphere, and the interaction between the atmosphere and the solar wind, and therefore the present atmospheric escape rate. Ultraviolet remote sensing is an essential complement to characterize high, tenuous, layers of the atmosphere. One Martian year of operation, with about 5,000 low passes, should allow DYNAMO to map in great detail the residual magnetic field, together with the gravity field. Additional data on the internal structure will be obtained by mapping the electric conductivity, sinergistically with the NETLANDER magnetic data. Three options have been recommended by the International Science and Technical Review Board (ISTRB), who met on July 1st and 2nd, 2002. One of them is centered on DYNAMO. The final choice, which should be made before the end of 2002, will depend on available funding resources at CNES.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    DYNAMO: a Mars upper atmosphere package for investigating solar wind interaction and escape processes, and mapping Martian fields


    Contributors:
    Chassefière, E. (author) / Nagy, A. (author) / Mandea, M. (author) / Primdahl, F. (author) / Rème, H. (author) / Sauvaud, J.-A. (author) / Lin, R. (author) / Barabash, S. (author) / Mitchell, D. (author) / Zurbuchen, T. (author)

    Published in:

    Advances in Space Research ; 33 , 12 ; 2228-2235


    Publication date :

    2003-01-01


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    DYNAMO: A Mars Upper Atmosphere Package for Investigating Solar Wind Interaction and Escape Processes, and Mapping Martian Fields

    Chassefiere, E. / Nagy, A. / Mandea, M. et al. | British Library Conference Proceedings | 2004


    Planet-B: Study of Martian Upper Atmosphere and its Interaction With the Solar Wind

    Tsuruda, K. / Nakatani, I. / Yamamoto, T. et al. | British Library Conference Proceedings | 1997


    Mars Global Surveyor aerodynamics for maneuvers in Martian atmosphere

    Shane, Russell / Tolson, Robert / Rault, Didier | AIAA | 1997


    Solar wind interaction with Mars

    Mohan, Mahendra | Online Contents | 1997