Sökning: "subauroral ion drifts SAID"

Hittade 2 avhandlingar innehållade orden subauroral ion drifts SAID.

1. 1. Auroral Electric Fields From Satellite Observations and Numerical Modelling

   Författare :Tomas Karlsson; KTH; []
   Nyckelord :Satellite measurements; electric fields; ionosphere; magnetosphere; diverging electric fields; downward current region; black aurora; westward travelling surge; auroral bulge; subauroral ion drifts SAID ; subauroral electric fields SAEF ; mid-latit; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : This thesis is about electrodynamics of thehigh-latitude/auroral region of near-Earth space. The work ismainly based on electric field measurements made by the doubleprobe instrument on the Freja satellite at altitudes ofapproximately 800-1700 km, together with measurements fromother instruments on the same satellite, and ground-basedinstrumentation. LÄS MER

3. 2. Auroral electrodynamics of plasma boundary regions

   Författare :Sónia Liléo; Göran Marklund; Anders Eriksson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Space physics; Rymdfysik;

   Sammanfattning : The electrodynamic coupling between the auroral ionosphere and the magnetosphere is the main subject of this thesis. Satellite measurements of electric and magnetic fields and of charged particles are used to explore three distinct plasma boundaries, magnetically linked to the nightside auroral ionosphere. LÄS MER