A multicomponent seismic survey at Calgary International Airport, Alberta
Bibliographic record
Abstract
A 2.4 km multicomponent seismic line was acquired near Calgary International airport to evaluate Vibroseis ® source and receiver parameters for recording P-S data. A series of source tests was undertaken using one and two vibrators, several different sweep lengths and frequency bandwidths. Linear as well as and non-linear sweeps were also evaluated. Reviews of the source tests indicated that 2 vibrators were required to obtain visible reflections from basement rocks (1.8 s P-P time). Optimum source characteristics for P-S data were found to be a non-linear sweep (-3 dB/octave) from 6 Hz to 100 Hz over 12 seconds. Vibrator separation was also tested in a ‘walkaway’ experiment to evaluate this source parameter on data quality. Conventional 3-C geophones as well as new ‘3-C nails’ were also tested. One test line processed to date indicates P-P reflections with bandwidth over the full spectrum of the source sweep and P-S reflections with bandwidth from 6 Hz to approximately 60 Hz.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".