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  • Other Sources  (3)
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  • 1
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    Unknown
    Cold streams of ionospheric oxygen in the plasma sheet during the CDAW 6 event of March 22, 1979 (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: During magnetospheric substorm events, the plasma and ion composition experiments in the ISEE-1 and 2 satellites detected cold ionospheric O+ streams, moving tailwards in the near earth magnetotail. Flow is parallel to the magnetic field lines, with drift velocity in agreement with the electric field topology obtained by mapping the model ionospheric field along the magnetic field lines. Fluctuations of the flow velocity of the streams can be related to magnetotail movements. Oscillations of the flow direction and speed with periods ranging from 5 to 10 min that suggest the presence of waves are observed. The streams are observed at all distances between 15 and 6 Re from the earth. When averaged over 360 deg, the streams show up as a low energy peak, superimposed on the distribution of isotropic plasma sheet ions. This double-peak structure of the energy spectrum seems typical of the disturbed plasma sheet.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 90; 4091-409
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Unknown
    Cold streams of ionospheric oxygen in the plasma sheet during the CDAW-6 event of March 22, 1979 (1983)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: During magnetospheric substorm events, the plasma and ion composition experiments in the ISEE-1 and 2 satellites detected cold ionospheric O+ streams, moving tailwards in the near Earth magnetotail. Flow is parallel to the magnetic field lines, with drift velocity in agreement with the electric field topology obtained by mapping the model ionospheric field along the magnetic field lines. Fluctuations of the flow velocity of the streams can be related to magnetotail movements. Oscillations of the flow direction and speed with periods ranging from 5 to 10 min that suggest the presence of waves are observed. The streams are observed at all distances between 15 and 6 Re from the Earth. When averaged over 360 deg, the streams show up as a low energy peak, superimposed on the distribution of isotropic plasma sheet ions. This double-peak structure of the energy spectrum seems typical of the disturbed plasma sheet.
    Keywords: GEOPHYSICS
    Type: NASA-CR-174064 , NAS 1.26:174064 , IFSI-83-16
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    On the structure of the tail magnetic field (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: The configuration of the magnetic field in the Earth's geomagnetic tail is studied. The results in the lobe region and in the plasma sheet boundary layer region are compared. A systematic enhancement of the By component of the field is detected in the plasma sheet boundary layer with respect to the lobe; this enhancement leads to a lower rate of flaring of the magnetic field lines in the lobe with respect to the plasma sheet boundary layer. This observation is a signature of field aligned currents at the boundary. The direction of such field aligned currents agrees with the nightside region two current system.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 95; 7929-793
    Format: text
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    NASA TECHNICAL REPORTS
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