PBO Strainmeter Tsunami Signals 2005-2012
Bibliographic record
Abstract
PBO Strainmeter Tsunami Signals 2005-2012 The Plate Boundary Observatory (PBO) includes 75 borehole strainmeters (BSMs) installed in arrays along the Pacific-North America plate boundary between southern California and Vancouver Island, Canada. The 2009 M8.1 Samoa, 2010 M8.8 Chile and 2011 M9.0 Tohoku earthquakes generated tsunamis that were recorded by several PBO BSMs as the waves arrived along the coastline of North America. Analysis of the strain data recorded in the days after these events showed the following: the tsunami arrival times recorded by the strainmeters were consistent with those recorded by nearby tide-gauges, the data were of sufficient quality to compare the frequency content of the tidal signal in the days before and after the tsunami, and the strain measurements are comparable with those predicted by theory given the tide gauge measurements. In this presentation we have tried to identify all tsunami signals recorded by PBO strainmeters in the Pacific Northwest since the installation of the first BSM in June 2005. We used the West Coast and Alaska Tsunami Warning Center (WCATWC) tsunami catalogue to identify events.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".