EISCAT : early history and the firsi ten years of operation Page 1 Journul,,/ Atmosphcw and
Terresrril Physrcs, Vol. No. 4/5. pp. 525-542, 1993. 0021-9169:93$6.00+ .oO Printed in Great …

Earth's cusps are magnetic field features in the magnetosphere associated with regions
through which plasma from the Sun can have direct access to the upper atmosphere …

We examine 65 ionospheric convection changes associated with changes in the Y and Z
components of the interplanetary magnetic field (IMF). We measure the IMF reorientations …

The assimilative map** of ionospheric electrodynamics (AMIE) algorithm has been
applied to derive the realistic time‐dependent large‐scale global distributions of the …

Recent observations of ionospheric flows by ground‐based radars, in particular by the
European Incoherent Scatter (EISCAT) facility using the “Polar” experiment, together with …

An analytic theoretical model is set up of open flux tube motion over the dayside
magnetopause, based on a number of simplifying assumptions. The theory does not seek to …

Weather disturbances in the ionosphere-thermosphere system can have a detrimental effect
on both ground-based and space-based systems. Because of this impact and because our …

We have combined∼ 300 h of tristatic measurements of the field-perpendicular F region
ionospheric flow measured overhead at Tromsø by the EISCAT UHF radar, with …

Combined observations by meridian‐scanning photometers, all‐sky auroral TV camera and
the EISCAT radar permitted a detailed analysis of the temporal and spatial development of …

We present predictions of the signatures of magnetosheath particle precipitation (in the
regions classified as open low‐latitude boundary layer, cusp, mantle and polar cap) for …