Robust estimation of the band-limited inductive-limit response from impulse-response TEM measurements taken during the transmitter switch-off and the transmitter off-time: Theory and an example from Voisey's Bay, Labrador, Canada
Bibliographic record
Abstract
Abstract Modern transient electromagnetic systems are able to take measurements in the transmitter on-time. Integrating measurements taken during the transmitter switch-off and those collected in the transmitter off-time yield an estimate of the primary field plus the secondary inductive-limit response. If the transmitter loop position is known and the position and orientation of the receiver dipoles are known, it is possible to calculate the primary field. When the theoretical primary field is subtracted from the measured inductive-limit-plus-primary response, the inductive-limit response can be isolated. An anomalous inductive-limit response is a diagnostic feature of highly conductive ore bodies. On- and off-time PROTEM data collected in a drill hole proximal to the Reid Brook Zone (one of the Voisey's Bay deposits in Labrador, Canada) shows a strong inductive-limit anomaly corresponding to an off-hole conductor. A drill hole targeted to test this conductor intersected 20.4 m of mineralization, including 8.25 m of massive sulfide.
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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 | 0.001 | 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 | 0.001 | 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) | 0.001 | 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".