SH020-07
Ulysses Observations of Solar Wind Turbulence During the First Fast Latitude Scan

Wednesday, 9 December 2020: 10:54
Virtual
Abigale S Watson1,2, Charles W Smith3, Anastasia Marchuk2, Matthew R Argall3, Colin J Joyce4, Philip A Isenberg3, Bernard John Vasquez3, Nathan Schwadron3, Maciej Bzowski5, Marzena A. Kubiak5 and Neil Murphy6, (1)Wentworth Institute of Technology, Department of Mechanical Engineering, Boston, MA, United States, (2)University of New Hampshire Main Campus, Department of Physics and Institute for the Study of Earth, Oceans and Space, Durham, NH, United States, (3)University of New Hampshire, Durham, NH, United States, (4)Princeton University, Department of Astrophysical Sciences, Princeton, NJ, United States, (5)Space Research Centre Polish Academy of Sciences, Warsaw, Poland, (6)JPL, Pasadena, CA, United States
Recorded Presentation
Abstract:
Our examination of solar wind turbulence as measured by the Ulysses spacecraft during the first fast latitude scan in 1994-95 has revealed a striking uniformity in the turbulent inertial-range spectrum that is absent at other times in the data. The inertial-range spectral index is consistently in the range −3/2 to −5/3 whereas at all other times in the Ulysses orbit there is a much greater range of indices in the measured spectra. We combine this with measurements of the fluctuation anisotropy as it relates to ambient plasma conditions and the underlying geometry of wave vectors, the measured onset of dissipation, and the strength of the turbulent transport of energy in an examination of this unique set of solar wind measurements.
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