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Record W4327941334 · doi:10.21203/rs.3.rs-2696155/v1

Moho Depth Variations in North West Iran estimated from the Moho reflected phases

2023· preprint· en· W4327941334 on OpenAlexfundno aff
F. Alidoost, Esmaeil Bayramnejad, Zaher Hossein Shomali

Bibliographic record

VenueResearch Square · 2023
Typepreprint
Languageen
FieldEarth and Planetary Sciences
Topicearthquake and tectonic studies
Canadian institutionsnot available
FundersCanadian Institutes of Health ResearchUniversity of Tehran
KeywordsGeologyMohoSeismologyGeodesyInversion (geology)CrustTravel timeFault (geology)TectonicsGeophysics

Abstract

fetched live from OpenAlex

Abstract In this study, we picked Moho reflected phases and used them to estimate the spatial variation of the Moho depth in northwestern Iran. Moho reflected phases are secondary phases which can be observed at the distance range between 60 and 200 km. We used earthquakes with depth shallower than 40 km that occurred from 1996 to 2017 and collected the approximate travel-time of 200 PmP and 150 SmS high quality phases recorded by 15 seismic stations. We used the differential travel-time of direct and Moho reflected phases to estimate the depth of Moho. The results of the reflected phases PmP and SmS are very similar in character. Although differences are also observed, especially in the northern part of the studied area where piercing points are not well distributed. The results of the inversion of P data are more reliable owing to the accuracy of the picking of P- compared to S- phases. According to the results, the depth of Moho is in order of 45 km in the south part of NorthTabriz Fault and shallower towards eastern part of the study area beneath the Talesh Mountains, 43.2 km. Moho increases from the north Tabriz fault to south of the study area and becomes approximately 45 km.

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.016
Threshold uncertainty score0.032

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.237
GPT teacher head0.403
Teacher spread0.166 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2023
Admission routes1
Has abstractyes

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