Sound pressure and particle velocity measurements from marine pile driving with bubble curtain mitigation
Bibliographic record
Abstract
Measurement of underwater acoustic pressure and acoustic particle velocity was performed near marine pile driving work with bubble curtain mitigation to determine the effectiveness of the bubble curtain at reducing acoustic particle velocity levels and sound pressure levels. Euler's linearized momentum equation can be used to show that the acoustic particle velocity is related to the time integral of the acoustic pressure gradient. Acoustic particle velocity from pile driving was measured by the pressure gradient method using a custom built, multi-component hydroacoustic sensor designed by JASCO. The pressure gradient sensor was composed of a pyramidal frame supporting four Reson TC4043 hydrophones and a JASCO AIM attitude/depth sensor. Pressure signals from the four hydrophones were sampled at 25 kHz per channel, with 16-bit resolution, using a laptop PC based digital acquisition system. Bubble curtain proved effective in mitigating both sound pressure and particle velocity levels generated by the pile driving.
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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 | 0.000 | 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) | 0.001 | 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".