Call number:
ZSP-124-56
In:
ANARE research notes
Description / Table of Contents:
Measurements taken near solar minimum of the total electron content (TEC) of the ionosphere equatorward of Macquarie Island (54.5°S, 158.9°E), using the Faraday rotation techniques are presented. The data collected indicate that the peak in daytime TEC maximises around late autumn, progressively decreases through winter to spring, and gradually recovers with the onset of summer. The morning post-sunrise build up phase of TEC becomes progressively less uniform from winter through summer, whilst the post-sunset TEC decay phase is often disrupted, during all seasons, by the onset of geomagnetic disturbances and / or the passage of the ionospheric trough. Magnetic storm events are often accompanied by a large increase in TEC lasting several hours, with increased geomagnetic activity on successive evenings, and a general reduction of daytime TEC levels during the storm recovery phase over 2 - 3 days. The largest percentage increases in TEC generally occur around the time of the minimum value of the Dst-index.
Type of Medium:
Series available for loan
Pages:
iii, 40 S. : Ill.
ISBN:
0642122962
Series Statement:
ANARE research notes 56
Branch Library:
AWI Library
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