Examination of the relative influence of current gathering on fixed loop and moving source electromagnetic surveys
Why this work is in the frame
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Bibliographic record
Abstract
Abstract A physical model study was conducted of the responses provided by moving-source and fixed-loop frequency-domain electromagnetic prospecting systems when operated over the same target conductor located in a conductive host environment. The results indicate that the fixed-loop responses display enhancement due to the current gathering effect that exceeds that seen in the moving-source responses by at least an order of magnitude for all the source-to-receiver separations tested for the moving-source system. The results also indicate that as transmitter frequency is increased the current gathering effect displays an abrupt onset in the responses provided by both systems, but that this onset begins at a frequency which is a decade lower for the fixed-loop system than the corresponding frequency of onset for the moving-source system. The current gathering enhancement effects show a clear reduction with increase of target depth for the fixed-loop system but an increase with depth for the moving-source system. The model parameters employed in these studies are shown to be well related to typical conditions found in full-scale surveys.
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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 | 0.000 |
| 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 it