THE NEW ENGLAND SEISMIC NETWORK Award Number 04HQAG0020
Bibliographic record
Abstract
From February 1, 2004 to December 30, 2006 Weston Observatory continued to operate a 12-station regional seismic network to monitor earthquake activity in New England (Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont) and vicinity. The purpose of this monitoring is to compile a complete database of earthquake activity in New England to as low a magnitude as possible in order to understand the causes of the earthquakes in the region, to assess the potential for future damaging earthquakes, and to better constrain the patterns of strong ground motions from earthquakes in the region. The NESN coordinates earthquake monitoring in the northeastern U.S. (NEUS) with the Lamont Cooperative Seismic Network (LCSN) of Lamont-Doherty Earth Observatory as part of the Advanced National Seismic Network (ANSS) northeast center for earthquake monitoring (ANSS-NE). It also coordinates its activities with the National Earthquake Information Center (NEIC) of the US Geological Survey in Golden, CO and with the Earthquakes Canada group of the Geological Survey of Canada (GSC) in Ottawa, Ontario. At all of the Weston Observatory stations the sensors were CMG-40T feedback geophones with a flat response to ground velocity between roughly 30 Hz and 30 sec. Initially, seven of the stations had Nanometrics, Inc. 16-bit digitizers with gain-ranging, digitized at a rate of 100 samples per second per channel, while five of the stations had Reftek, Inc. 130-01 broadband 24-bit digitizers sampled at 40 samples/second. Telemetry from five of the Nanometrics stations was by internet communications via Earthworm, while from the other two Nanometrics stations the telemetry was via dial-up telephone connection. Telemetry from the Reftek stations was by internet communications via Earthworm. In 2005 the digitizers at the five internet Nanometrics stations were replaced with Reftek 130-10 digitizers using internet communications into the Earthworm system. Event detection at all stations is carried out using a wavelet-transform (WT) based automated event detector and identifier. This system was developed for the Earthworm datastream and was operational throughout the course of this reporting period. It has been tuned so that it successfully detects and identifies many quarry blasts, most teleseisms, and many local earthquakes.
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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 | 0.002 | 0.005 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.710 | 0.498 |
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".