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High Resolution Seismic Reflection Survey For Groundwater Contaminant Studies, C.F.B. Borden, Ontario, Canada

2003· article· en· W2327465617 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.

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

Venue16th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems · 2003
Typearticle
Languageen
FieldEngineering
TopicGeophysical Methods and Applications
Canadian institutionsnot available
Fundersnot available
KeywordsGeologyAquiferBedrockGroundwaterWater tableBoreholeGroundwater flowWater wellSiltGeomorphologyHydrology (agriculture)Geotechnical engineering

Abstract

fetched live from OpenAlex

A high resolution CMP P-wave reflection seismic survey was conducted over a 1 square km area of<br>Canadian Forces Base Borden in central Ontario in order to detect and map a shallow aquitard (< 30 m<br>depth). This impermeable clayey silt unit blocks known surface groundwater contamination from reaching<br>permeable units at depth; structural variation of this surface is a factor in groundwater flow. Since the area<br>of interest is in an urban setting, positioning of seismic lines was a challenging task. In addition, a low water<br>table (~3 m depth) with dry sand on surface combined to limit both the “optimum window” and the<br>frequency resolution. However, with borehole geophysical log control (including P-wave velocities),<br>stacked, migrated and filtered sections were produced for five seismic lines. Reflections were observed from<br>the upper aquitard, a lower dense till, and the top of bedrock. Topographic relief (20m+) of the upper<br>aquitard correlated well with stratigraphic profiles obtained from continuous coring and measured<br>groundwater flow directions obtained from observation wells. The seismic results served to confirm the<br>subsurface hydro-geological model including the viability of the aquitard throughout the area. Such work<br>provided additional assurance that existing contaminant management measures are adequate.

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.351
Threshold uncertainty score0.995

Codex and Gemma teacher scores by category

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

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 head0.013
GPT teacher head0.208
Teacher spread0.195 · 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