Predictive modeling of moisture movement within soil cover systems for saline/sodic overburden piles
Why this work is in the frame
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Bibliographic record
Abstract
The research presented in this thesis describes the application of the computer modeling \nprogram Soil Cover 2000 as a tool for predicting the soil-atmosphere fluxes and \nassociated moisture movement in a variety of soil cover systems. The four systems \nexamined for this thesis are used to reclaim a saline-sodic shale overburden deposit \nlocated at the Syncrude Canada Limited mine site, 40 km North of Fort McMurray, \nAlberta, Canada. The research represents the second phase of a cover instrumentation \nand modeling research program. \n \nCharacterization of the soil cover materials and field responses was carried out during \nphase one research conducted by Boese (2003) and Meiers (2002). The models were \nmade to simulate field conditions by using multi-modal soil-water characteristic curves \nand hydraulic conductivity functions, and by estimating the growth of the plant species \nfound on the covers. Computed and measured field response patterns for the four cover \nsystems matched reasonably well for a five month period from May 19 to October 22, \n2000. The models were then applied to predict the field measurements for the same \nperiod during 2001. Only two adjustments needed to be made to the model parameters \nin order to simulate the 2001 data; namely changing the dominant vegetation (and \nrelated growth parameters) and; adjusting the saturated hydraulic conductivity to match \nMeiers (2002) field measurements. \n \nThe calibrated model inputs were used to simulate five cover designs to test their \nperformance during extreme climate conditions. The main objective was to ascertain \nwhether a thinner cover system than the currently recommended cover thickness of 1 m \ncould be effective at the mine. The results indicate that the peat layer is required to \nminimize the amount of runoff and to decrease the potential for saturated conditions \nforming at the base of the cover. For a peat-over-till cover system to work effectively, \nthe peat layer needs to be thicker than 30 cm to further reduce the potential for saturated \nconditions forming at the base. However, thinning the till layer is acceptable since the \nresults show that a thinner till layer has little impact on the performance of the cover. \nThe overall cover thickness needs to be greater than 60 cm to improve plant survival.
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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 | 0.001 |
| 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 it