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Record W2161627345 · doi:10.7202/004845ar

Essai

2002· article· fr· W2161627345 on OpenAlexvenueaboutno aff
Brian H. Luckman

Bibliographic record

VenueGéographie physique et Quaternaire · 2002
Typearticle
Languagefr
FieldEarth and Planetary Sciences
TopicGeology and Paleoclimatology Research
Canadian institutionsnot available
Fundersnot available
KeywordsGeologyForestryGeography

Abstract

fetched live from OpenAlex

La dendroglaciologie consiste en l'utilisation de séries dendrochronologiques datées de manière absolue afin de reconstituer l'évolution des mouvements glaciaires. Les séries peuvent être utilisées (a) pour déterminer l'âge minimal des formations d'origine glaciaire sur la base des dates d'établissement des plus vieux arbres qui s'y sont établis, (b) pour dater précisément les dommages subis par les arbres vivants (basculement, abrasion des tiges) au contact de la marge glaciaire, et (c) pour dater la mort d'arbres atteints par les mouvements du front glaciaire (interdation des patrons de croissance des arbres morts avec ceux d'arbres vivants de grande longévité). Bien que les bois in situ soient préférables dans de telles études, les subfossiles transportés et trouvés dans les dépôts avoisinants peuvent livrer des résultats fort utiles. La position et la datation de ces arbres fournissent des indications sur les fluctuations du glacier au cours du dernier millénaire. Cet essai illustre les approches et les indicateurs dendroglaciologiques utilisés dans la Cordillère du Canada à l'aide de certains exemples des études des mouvements glaciaires lors du Petit Âge glaciaire.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.003
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.609
Threshold uncertainty score0.000

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.003
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0020.002
Science and technology studies0.0030.001
Scholarly communication0.0060.003
Open science0.0020.004
Research integrity0.0030.002
Insufficient payload (model declined to judge)0.6090.474

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.

Opus teacher head0.039
GPT teacher head0.257
Teacher spread0.218 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreOther

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".

Quick stats

Citations32
Published2002
Admission routes2
Has abstractyes

Explore more

Same venueGéographie physique et QuaternaireSame topicGeology and Paleoclimatology ResearchFrench-language works237,207