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Interplanetary Magnetic Field Power Spectrum Variations: A VHO Enabled StudyThe newly reprocessed high time resolution (11/22 vectors/sec) Wind mission interplanetary magnetic field data and the solar wind key parameter search capability of the Virtual Heliospheric Observatory (VHO) affords an opportunity to study magnetic field power spectral density variations as a function of solar wind conditions. In the reprocessed Wind Magnetic Field Investigation (MFI) data, the spin tone and its harmonics are greatly reduced that allows the meaningful fitting of power spectra to the ~2 Hz limit above which digitization noise becomes apparent. The power spectral density is computed and the spectral index is fitted for the MHD and ion inertial regime separately along with the break point between the two for various solar wind conditions. The time periods of fixed solar wind conditions are obtained from VHO searches that greatly simplify the process. The functional dependence of the ion inertial spectral index and break point on solar wind plasma and magnetic field conditions will be discussed
Document ID
20110008350
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Szabo, A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Koval, A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Merka, J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Narock, T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 25, 2013
Publication Date
March 27, 2011
Subject Category
Space Sciences (General)
Meeting Information
Meeting: 4th Solar Orbiter Workshop
Location: telluride, CO
Country: United States
Start Date: March 27, 2011
End Date: March 31, 2011
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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