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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 14, issue 12
Ann. Geophys., 14, 1403–1412, 1996
https://doi.org/10.1007/s00585-996-1403-x
© European Geosciences Union 1996

Special issue: VIIIe EISCAT

Ann. Geophys., 14, 1403–1412, 1996
https://doi.org/10.1007/s00585-996-1403-x
© European Geosciences Union 1996

  31 Dec 1996

31 Dec 1996

A comparison of EISCAT and Dynasonde measurements of the auroral ionosphere

K. J. F. Sedgemore1, P. J. S. Williams1, G. O. L. Jones2, and J. W. Wright1 K. J. F. Sedgemore et al.
  • 1Adran Ffiseg, Prifysgol Cymru Aberystwyth, Ceredigion SY23 3BZ, Wales
  • 2British Antarctic Survey, NERC, Cambridge CB3 0ET, England

Abstract. Incoherent-scatter radar and ionospheric sounding are powerful and complementary techniques in the study of the Earth's ionosphere. The work presented here involves the use of the Tromsø Dynasonde as a correlative diagnostic with the EISCAT incoherent-scatter radar. A comparison of electron-density profiles shows how a Dynasonde can be used to calibrate an incoherent-scatter radar and to monitor changes in the system. Skymaps of the direction of Dynasonde echoes are compared with EISCAT-derived density profiles to illustrate how a Dynasonde can be used to measure the drift velocity of auroral features. Vector velocities fitted to Dynasonde echoes are compared with EISCAT-derived plasma velocities. The results show good agreement when the data are taken during quiet to moderately active conditions and averaged over time scales of 30 min or more.

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