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Record W2021054839 · doi:10.4296/cwrj2801069

Glacial Control of Water Resource and Related Environmental Responses to Climatic Warming: Empirical Analysis Using Historical Streamflow Data from Northwestern Canada

2003· article· en· W2021054839 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

venuePublished in a venue whose home country is Canada.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueCanadian Water Resources Journal / Revue canadienne des ressources hydriques · 2003
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicCryospheric studies and observations
Canadian institutionsnot available
Fundersnot available
KeywordsStreamflowMeltwaterGlacierGlacial periodClimate changeEnvironmental scienceEvapotranspirationPrecipitationGlobal warmingDrainage basinPhysical geographyClimatologyHydrology (agriculture)STREAMSWater resourcesGeologyGeographyEcologyMeteorologyOceanographyGeomorphology

Abstract

fetched live from OpenAlex

Abstract We applied nonparametric statistical techniques to historical streamflow data from five glacierized and four nonglacierized watersheds in southwest Yukon and northwestern British Columbia, Canada, to determine whether rivers with and without catchment glacial cover respond in significantly different ways to a warming climate. The analysis was posed in terms of contrasts between the two groups with respect to long-term trends in annual time series of total river flow volume. We found that glacier-fed rivers grew larger and nival streams progressively smaller over the historical record under an observed regional warming trend. Although some of these trend effects are subtle, the overall result was statistically significant at restrictive confidence levels. Combined consideration of hydrological, meteorological and glaciological trends suggests that the streamflow consequences of increasing temperature exceed those from a concurrent rise in precipitation in the study area, causing increases in both glacial meltwater production and evapotranspiration; the former appears to have the dominant net hydrologic effect in glacierized catchments, and the latter in glacier-free watersheds. By empirically demonstrating that catchment glacial cover can result in opposite trends in total annual flow volume from river to river within an otherwise hydroclimatologically uniform area, the analysis presents strong evidence that climatic warming can materially affect downstream water resources specifically via glaciological pathways, and also implies that regional generalizations of interpreted or projected hydrologic trends may not be tenable in variably-glacierized regions. Nous avons appliqué des méthodes statistiques non paramétriques aux données historiques sur l’écoulement fluvial à partir de cinq bassins englacés et quatre bassins non englacés dans le sud-ouest du Yukon et dans le nord-ouest de la Colombie-Britannique, au Canada, pour déterminer si les rivières avec ou sans glacier d’amoncellement de neige répondent de diverses manières considérablement différentes au réchauffement du climat. L’analyse a été posée en termes de contrastes entre les deux catégories en ce qui concerne les tendances à long terme touchant les séries chronologiques annuelles du volume total du débit fluvial. Nous avons constaté que les rivières alimentées par les glaciers devenaient plus grandes et que les courants nivaux devenaient progressivement plus petits au fil des enregistrements historiques selon une tendance régionale au réchauffement observée. Bien que certains effets de ces tendances soient légèrement perceptibles, le résultat global était important d’un point de vue statistique à des niveaux de confiance restrictifs. Considérées dans leur ensemble, les tendances hydrologiques, météorologiques et glaciologiques indiquent que les conséquences sur l’écoulement fluvial de l’augmentation des températures dépassent celles d’une hausse simultanée des précipitations dans la zone d’études, ce qui provoque des augmentations à la fois de la production des eaux de fonte glaciaires et de l’évapotranspiration; la première, l’effet hydrologique final dominant, dans les bassins englacés, et la deuxième, dans les bassins exempts de glaciers. En démontrant empiriquement que le couvert glaciaire du bassin peut donner lieu à des tendances opposées dans le volume total du débit annuel d’une rivière à une autre à l’intérieur d’une zone autrement uniforme sur le plan hydro-climatologique, l’analyse présente des preuves solides voulant que le réchauffement climatique peut matériellement influer sur les ressources hydriques en aval, en particulier via des voies glaciologiques, et l’analyse implique également que les généralisations régionales des tendances hydrologiques interprétées ou projetées ne sont peut-être pas défendables dans les régions à l’englaciation variable.

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.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.688
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0010.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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.

Opus teacher head0.031
GPT teacher head0.210
Teacher spread0.179 · 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