The formation of F3-layer and the observation of gravity waves during solar maximum and minimum
Bibliographic record
Abstract
Ionospheric vertical sounding observations, using the Canadian Advanced Digital Ionosonde (CADI), are being carried out at Sao Jose dos Campos (23°S), Brazil, under the southern crest of the Equatorial Ionization Anomaly (EIA) region since August 2000. In this paper we present and discuss some important features of observations carried out from September 2000 to August 2001 and from January 2006 to December 2006. This is a period of high solar activity and low solar activity respectively, and observations during both quiet and disturbed geomagnetic conditions are presented. In this investigation, strong wave-like structures propagating through the F-layer during the daytime and nighttime, especially in summer, were obtained. The observed wave structures during the daytime are consistent with the linear theory of gravity waves, having periods of about 30 to 90 minutes. The vertical variations in F-layer plasma density profiles caused by gravity waves were sometimes so intense that additional F3-layer were formed during the daytime.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".