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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 29, issue 5
Ann. Geophys., 29, 759-770, 2011
https://doi.org/10.5194/angeo-29-759-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 29, 759-770, 2011
https://doi.org/10.5194/angeo-29-759-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

  06 May 2011

06 May 2011

3-D mesoscale MHD simulations of a cusp-like magnetic configuration: method and first results

E. Adamson*,1, A. Otto1, and K. Nykyri2 E. Adamson et al.
  • 1Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, USA
  • 2Embry-Riddle Aeronautical University, Daytona-Beach, FL, USA
  • *now at: Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau, Germany

Abstract. We present a local mesoscale model of the magnetospheric cusp region with high resolution (up to 300 km). We discuss the construction and implementation of the initial configuration and give a detailed description of the numerical simulation. An overview of simulation results for the case of strongly northward interplanetary magnetic field (IMF) is then presented and compared with data from Cluster 2 spacecraft from 14 February 2003. Results show a cusp diamagnetic cavity (CDC) with depth normal to the magnetospheric boundary on the order of 1–2 RE and a much larger extent of ~5–9 RE tangential to the boundary, bounded by a gradual inner boundary with the magnetospheric lobe and a more distinct exterior boundary with the magnetosheath. These results are qualitatively consistent with observational data.

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