Structure of the poleward wall of the trough and the inclination of the geomagnetic field above the EISCAT radar

International audience A special high-resolution routine of the EISCAT radar has been used to investigate the structure and development of the poleward wall of a deep trough in electron density. The feature was tracked by the radar during a 7-hour period under very quiet geomagnetic conditions. The...

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Bibliographic Details
Main Authors: Jones, D. G., Walker, I. K., Kersley, L.
Other Authors: Department of Physics, University of Wales
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 1997
Subjects:
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences
EISCAT
Online Access:https://hal.science/hal-00316275
https://hal.science/hal-00316275/document
https://hal.science/hal-00316275/file/angeo-15-740-1997.pdf
Description
Summary:International audience A special high-resolution routine of the EISCAT radar has been used to investigate the structure and development of the poleward wall of a deep trough in electron density. The feature was tracked by the radar during a 7-hour period under very quiet geomagnetic conditions. The field-aligned nature of the structure enabled an estimate to be made of the inclination of the geomagnetic field above EISCAT that was in good agreement with the current model. Observations of narrow field-aligned enhancements in electron temperature demonstrated that the wall of this trough is a dynamic feature, reforming regularly as the electron density responds on a time scale of tens of minutes to energy input from soft-particle precipitation.

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