A comparative review on groundwater hydrogeochemistry in countries preferring crystalline rock for deep geological disposal
Why this work is in the frame
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Bibliographic record
Abstract
This study compares the hydrogeochemical environments of countries considering crystalline rock for deep geological disposal, with a focus on salinity differences and disposal safety. Crystalline rock is considered as a potential host in South Korea. The preference for crystalline rock is also shown in leading disposal countries, such as Finland, Sweden and Canada. However, hydrogeochemical contrasts exist, particularly in salinity. The deep groundwater in the Fennoscandian and Canadian Shields ranges from brackish to brine, forming layers with Na-Cl to Ca-Cl types, whereas most groundwater in South Korea’s crystalline rock is freshwater, with some brackish or saline waters near coastal areas due to seawater intrusion. The high salinity in the Fennoscandian and Canadian Shields is attributed to Paleozoic seawater evaporation and seawater freezing by Cenozoic glaciers, compounded by limited meteoric water infiltration and water-rock interactions. In South Korea, there is no evidence of ancient seawater transgressions of glaciation. Regarding disposal safety, freshwater environments cause less degradation in disposal components and limit radionuclide mobility. This suggests that a freshwater environment can also ensure the long-term safety of deep geological disposal, from a perspective different from that of a brine environment.
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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) | 0.001 | 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 | 0.001 | 0.001 |
| 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