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|Title:||Frontal and non-frontal characteristics of mid-latitude spread-F structures|
|Authors:||Bowman, G G|
|Abstract:||The experimental evidence for frontal and non-frontal structures associated with mid-latitude spread-F occurrence is presented and discussed. The evidence suggests that on most occasions frontal travelling ionospheric disturbances (TIDs) are primarily responsible for the recorded spread-F traces. However, at times non-frontal movements are detected due possibly to interference effects from TIDs travelling in different directions, or from the influence of small-scale structures which are also present at these times. At other times large-scale non-frontal "tongues" of ionization (of which the occurrence rate is somewhat uncertain) have also been detected when spread-F traces are observed.|
|ISSN:||0975-105X (Online); 0367-8393 (Print)|
|Appears in Collections:||IJRSP Vol.19(2) [April 1990]|
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