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Title: Total electron content and scintillation in the vicinity of the main ionospheric trough over Northern Europe. Final report, 1 Jul 90-30 Jun 91

Technical Report ·
OSTI ID:6104589

A receiving system for NNSS satellites located at Lerwick (60.1N, 1.2W) has been used to make differential carrier phase measurements in the vicinity of the main ionospheric trough. The observations have been calibrated to obtain absolute total electron content using measurements from a co-located GPS receiver for two months near solar maximum. Mapping techniques, developed to study the changes in night-time total electron content as a function of both latitude and time, are described. Examples are given of characteristic trough behaviour for different levels of geomagnetic activity. A new feature of the work is the limited extent of the poleward wall of the trough for moderate geomagnetic conditions. The mapping techniques can also be applied to measurements of radio-wave scintillation allowing comparison between small-scale irregularity behaviour and the larger-scale changes in total electron content.

Research Organization:
University Coll. of Wales, Aberystwyth (United Kingdom). Dept. of Physics
OSTI ID:
6104589
Report Number(s):
AD-A-241205/4/XAB; CNN: AFOSR-87-0378
Resource Relation:
Other Information: Original contains color plates: All DTIC and NTIS reproductions will be in black and white
Country of Publication:
United States
Language:
English