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    Does a Magnetosphere Protect the Ionosphere?

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    Authors
    Maggiolo, R.
    Gunell, H.
    Discipline
    Physical sciences
    Subject
    Earth
    energy transfer
    ion outflow rate
    magnetic moment
    Mars
    planetary magnetic fields
    protective effect
    Venus
    Audience
    Scientific
    Date
    2021
    Publisher
    Wiley-American Geophysical Union, Hoboken, NJ, USA
    Metadata
    Show full item record
    Description
    This chapter reviews observation at Venus, Earth, and Mars related to ionospheric ion outflow. We compare observations made around these three planets – Venus and Mars, which are unmagnetized, and Earth, which is magnetized – in order to assess the protective effect of planetary magnetic fields on ionospheric ion outflow. We discuss the measured flux of outflowing ionospheric ions, the energy transfer from the solar wind to the ionosphere and the fate of outflowing ionospheric ions. Our conclusion is that there is no observational evidence that, under current conditions, Earth's magnetic field can protect its ionosphere from losing material any better than the induced magnetospheres of Venus and Mars. However, extrapolating this result to geological timescale or to other planets must be made with care due to the complexity of the processes associated with ionospheric ion outflow.
    Citation
    Maggiolo, R.; Gunell, H. (2021). Does a Magnetosphere Protect the Ionosphere?. (Maggiolo, R., Ed.), Magnetospheres in the Solar System, Vol. 259, 729-742, Wiley-American Geophysical Union, Hoboken, NJ, USA, DOI: 10.1002/9781119815624.ch45.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/7763
    doi: http://dx.doi.org/10.1002/9781119815624.ch45
    Type
    Book chapter
    Peer-Review
    Yes
    Language
    eng
    Links
    NewsHelpdeskBELSPO OA Policy

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