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Geomagnetic Observations and Models pp 295–309Cite as

Interpretation of Core Field Models

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Part of the book series: IAGA Special Sopron Book Series ((IAGA,volume 5))

Abstract

In this chapter we review several recent research results on the observed geomagnetic secular variation and secular acceleration, the core flow models inferred from these observations, and their implications, in particular those of the torsional oscillations, on short period secular variation and on the dynamical properties inside the core. We also provide a comprehensive review on the recent development in geomagnetic data assimilation, and its applications to predict future secular variation. Most of the reviewed research results are either reported in IAGA General Assembly in Soporan in 2009, or in the period between this and the previous IAGA conference.

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Acknowledgements

We thank Terence Sabaka, Nils Olsen and Mioara Mandea for their help on this manuscript. This work is supported by the NSF Collaborative Mathematical Geophysics (CMG) program under the grant EAR-0327875, by the NSF Collaborative Research CSEDI under the grant EAR-0757880, and by the NASA Earths Surface and Interior Program.

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Authors and Affiliations

  1. Planetary Geodynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA

    Weijia Kuang

  2. Joint Center for Earth Systems Technology, University of Maryland, Baltimore County, Baltimore, MD, 21250, USA

    Andrew Tangborn

Authors
  1. Weijia Kuang
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  2. Andrew Tangborn
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Correspondence to Weijia Kuang .

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Editors and Affiliations

  1. , Institut de Physique du Globe de Paris G, Université Paris Diderot, rue Thomas Mann 5, Paris, 75205, France

    M. Mandea

  2. Deutsches GeoForschungsZentrum (GFZ), Telegrafenberg, Potsdam, 14473, Germany

    Monika Korte

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Kuang, W., Tangborn, A. (2011). Interpretation of Core Field Models. In: Mandea, M., Korte, M. (eds) Geomagnetic Observations and Models. IAGA Special Sopron Book Series, vol 5. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-9858-0_12

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