Augsburg/ULF

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Augsburg ULF Index

Contents

  1. Summary
  2. SPASE
  3. Research
  4. Data
    1. Merged Plots and Files
    2. Quick Browse
    3. Files
    4. Updates and Revision Notes
  5. Acknowledgment

1. Summary

Various geomagnetic indices (Kp, AE, Dst, SYM-H, PC) and averaged solar wind/IMF parameters quantify the energy supply in certain regions of the solar wind-magnetosphere-ionosphere system, and are used as primary tools in statistical studies of solar-terrestrial relationships. However, these indices characterize the steady-state level of the electrodynamics of the near-Earth environment. The turbulent character of solar wind drivers and the existence of natural MHD waveguides and resonators in the magnetospheric plasma in the ULF frequency range (~2-10 mHz) ensures a quasi-periodic magnetic field response to forcing at the boundary layers. Therefore, much of the turbulent nature of plasma processes of solar wind-magnetosphere-ionosphere interactions can be monitored with ground-based or space observations in the ULF frequency range. We have constructed a new index, coined a “ULF wave index,” characterizing the turbulent character of the energy transfer from the solar wind into the upper atmosphere and the short-scale variability of near-Earth electromagnetic processes. We suppose that a wide range of space physics studies will benefit from the introduction of this new index. (From [1])

2. SPASE

Repository | Numerical Data

3. Research

  • This index is described in Kozyrev et al., 2007 [2]
  • More documents and presentations are available at [3]

4. Data

4.1. Merged Plots and Files

4.2. Quick Browse

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4.3. Files

Individual data files: ftp://yspace.augsburg.edu/ftp/MACCS/ULF_Index/

4.4. Updates and Revision Notes

  • Initial file creation on 06/23/2008.
  • Added missing Timf variable on 11/17/2008.
  • To improve access speed, data are derived from cache of original data source on December 1, 2008. See Notes#Versioning for more information about versioning and caching.

5. Acknowledgment

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