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Table 1.

Main characteristics of the non-Alfvénic (NALF) and Alfvénic (ALF) streams.

Stream Dates VSW n Tp |B| VA θBV z+rms zrms CvB σr
Year, (DOY) (km/s) (cm−3) (105 K) (nT) (km/s) (deg) (km/s) (km/s)
NALF 1995 (104.5–106.0) 349 9.96 0.35 2.90 3 31 21 26 0.07 –0.68
ALF 1995 (98.0–101.4) 650 3.27 2.28 5.07 61 148 80 33 0.86 –0.36

Notes. The first five columns after the periods delimiting the streams are the averages over the stream duration of the solar wind speed (VSW), proton number density (n), proton temperature (Tp), magnetic field magnitude (B), and Alfvén speed (VA). θBV is the angle between the mean magnetic field and the mean solar wind speed. z±rms are the root mean square amplitudes of the Elsasser variables. ⟨CvB⟩ is the correlation between velocity and magnetic fluctuations. Finally, σr = −2z ⋅ z+/(z+2 + z2) is the normalized residual energy. For these last four quantities, fluctuations and Elsasser fields were computed by removing a 1 h running average.

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