Felt reports and damage accounts for the 1925 moment magnitude 6.2 Charlevoix, Quebec, earthquake
Bibliographic record
Abstract
The 28 February 1925 magnitude 6.2 Charlevoix Earthquake occurred at 9:19 p.m. local time. The epicenter was beneath the St. Lawrence River in the Charlevoix-Kamouraska area. The shock was felt at more than 1000 km from the epicenter. In the following weeks, dozens of aftershocks continued to shake the area, keeping residents on both sides of the St. Lawrence River on high alert. Damage was reported on both sides of the River in the epicentral zone, as well as in the cities of Québec and Shawinigan. In these areas, chimneys and masonry buildings proved particularly sensitive to the ground vibrations. The 1925 earthquake is one of five known moment magnitude 5.5-7 events that have occurred in the Charlevoix Seismic Zone (CSZ) between 1663 and present. This Open File Report presents the macroseismic information and its ratings on the Modified Mercalli Scale for a total of more than 600 locations in Canada and some 180 in the United States (from NOAA). This report builds on the macroseismic information published in Cajka (1999) and adds descriptive information for each locality where damage occurred. For each location, the felt information is rated on the Modified Mercalli intensity (MMI) scale and tabulated in a Microsoft Excel sheet. Numerous images of clippings of newspaper articles are included and the descriptive text is added to the database. In addition, photographs of the earthquake damage are included. The Open File also provides a GoogleEarth kmz file that allows the felt information reports to be viewed in a spatial tool.
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 | 0.001 | 0.005 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.006 | 0.009 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.067 | 0.008 |
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".