ESR/EISCAT - CLUSTER modes 2 and 2A


ESR

Small meridian scan with one pointing direcion along L-shell (mode 2 is for southward IMF when cusp is to the south of Longyearbyen, mode 2A is for northward IMF when cusp is poleward of Longyearbyen).
  • Mode 2 pointing directions
    1. azimuth ?
      elevation ?
      dwell time ?
    2. azimuth ?
      elevation ?
      dwell time ?
    3. azimuth ?
      elevation ?
      dwell time ?
    4. azimuth ?
      elevation ?
      dwell time ?
    Total scan cycle length = ? (6 min is desirable - is this possible with this many directions?)
  • Mode 2A pointing directions
    1. azimuth ?
      elevation ?
      dwell time ?
    2. azimuth ?
      elevation ?
      dwell time ?
    3. azimuth ?
      elevation ?
      dwell time ?
    4. azimuth ?
      elevation ?
      dwell time ?
    Total scan cycle length ?
  • power profile
  • alternating code E-region (details TBD)
  • longpulse F-region (maximum altitude more important than range resolution) : pulse length TBD
  • 10-s pre-integrations
  • EISCAT

    CP-4-B (dual beam VHF or VHF/UHF - any chance of 3 klystrom operations allowing both?) use minimum elevations. All fixed beam directions.
  • VHF 1
    - azimuth 360° (geographic meridian)
    - elevation 30°
  • VHF2
    - azimuth 344° (magnetic meridian)
    - elevation 30°
  • and/or UHF
    - azimuth 344°
    - elevation 20°

  • Mainly for cusp studies, but also valuable on nightside for looking at transpolar arcs, activations on open-closed boundary poleward of main substorm aurora, southward drifting arcs in growth phase. For use all year round, so no optical support possible in cusp region. I suggest we run 2 or 2A at random, half the runs will then be for the wrong Bz polarity but the other half will be OK. Better than losing time resolution trying to cover all latitudes.

    This mode could be considered for the following EISCAT/ESR configurations with Cluster:

  • ESR at about 9-15 MLT
    5, 5*, 6, 22, 22*, 23, 42, 43, 43*, 56, 56*, 57
  • ESR at about 15-21 MLT
    12, 12*, 32, 32*, 33, 50, 51, 51*, 64, 64*, 65
  • ESR at 21-03 MLT
    1, 2, 2*, 19, 19*, 20, 36, 37, 38, 38*, 53, 53*, 54, 55
  • ESR at about 03-09 MLT
    8, 8*, 27, 27*, 45, 46, 47, 47*, 60, 60*, 61

  • Diagrams

  • Mode 2
    - GIF
    - PostScript
  • Mode 2a
    - GIF
    - PostScript

  • GBDC | EISCAT/ESR modes

    25-SEP-1995 Richard Stamper