Towards an improved determination of Earth’s lithospheric field from satellite observations

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    Abstract

    Perhaps one of the biggest difficulties in modelling the Earth’s lithospheric magnetic field is the separation of contributions from sources of internal and external origin. In particular, the determination of smaller-scale lithospheric magnetic field features is problematic because the lithospheric signal is contaminated by much larger and highly time-dependent contributions from sources in the ionosphere and magnetosphere. Simultaneous, high-quality measurements from different locations as well as gradient estimates provided by the three Swarm satellites open new possibilities in lithospheric field modeling. Field gradients can be approximated by employing along-track and across-track field differences which act as high-pass filters of the data and data kernel. We present improvements of conventional lithospheric field modeling approaches to better determine the small-scale lithospheric field by incorporating gradient information.
    Original languageEnglish
    Publication date2016
    Number of pages1
    Publication statusPublished - 2016
    EventESA Living Planet Symposium 2016 - Prague, Czech Republic
    Duration: 9 May 201613 May 2016
    http://lps16.esa.int/

    Conference

    ConferenceESA Living Planet Symposium 2016
    Country/TerritoryCzech Republic
    CityPrague
    Period09/05/201613/05/2016
    Internet address

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