Bibliographic record
Abstract
Les crateres d'impact hyperveloces sont les structures morphologiques les plus abondantes a la surface des corps planetaires telluriques du systeme solaire, sauf sur Terre ou ils sont effaces par les processus de surface. La structure interne des crateres d'impact de type complexe ne peut etre etudiee en detail que sur Terre par des etudes geophysiques et geologiques de terrain. De telles approches - combinees a de la modelisation - peuvent reveler comment le processus de craterisation, la composition des roches cibles, l'erosion et d'autres processus post-impact peuvent conduire aux anomalies geophysiques observees, qui peuvent egalement etre detectees par des donnees satellitaires sur d’autres planetes. La cartographie du champ magnetique, les mesures gravimetriques, les sondages electromagnetiques (EM34), les analyses paleomagnetiques, le magnetisme des roches et les techniques petrographiques sont utilisees. Pour la premiere fois, nous revelons que la structure de Tunnunik recemment decouverte presente des anomalies de gravite negative et de champ magnetique positif typiques, ce qui nous aide a reconsiderer l'etendue de la fracturation dans les roches cibles. La structure d’Haughton, moins erodee que Tunnunik, montre des signes d'une aimantation augmentee au centre de son soulevement central, ce qui est cause par l’alteration hydrothermale induite par l’impact. Le paleomagnetisme aide a contraindre les âges differents des deux impacts des lacs a l’eau claire au Quebec. Ce travail a des implications importantes pour notre comprehension du processus de craterisation dans le systeme solaire, notamment en ce qui concerne l'etude des surfaces planetaires.
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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 | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".