Mapping Buried Valley Aquifers in SW Manitoba Using a Vibrating Source/Landstreamer Seismic Reflection System
Bibliographic record
Abstract
In southwest Manitoba, Canada, sand and gravel aquifers within buried valleys of Pleistocene and/or Tertiary age eroded into underlying Cretaceous bedrock have been developed for municipal, pipeline and farm water supplies. These valleys have little or no surface expression and the sedimentary architecture is poorly known; the extent of the valleys and their aquifers has been only partially delineated by boreholes. A program of seismic reflection surveys conducted primarily in compressional (P‐) mode has investigated three different buried valley systems and imaged their thick Pleistocene glacial sequences. The efficiency and effectiveness of the vibratory source/landstreamer system was demonstrated during a production P‐wave survey in which 38 line‐km of seismic reflection profiles were collected in 9 days. The seismic data provide an assessment of the subsurface architecture, and the thickness and properties of both the valley fill and the overlying sediments to depths of ∼100m. The profiles can also be used to locate optimum sites for groundwater well placements within buried valleys. This survey demonstrates that the seismic reflection method can now be considered a viable reconnaissance or regional mapping tool.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| 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 teacher head, 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".