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Record W3087608042 · doi:10.11575/prism/38216

Fate of Spilled Oil in the Gulf of Mexico and the Canadian Arctic

2020· dissertation· en· W3087608042 on OpenAlexaboutno aff
Damien Weleschuk

Bibliographic record

VenuePRISM (University of Calgary) · 2020
Typedissertation
Languageen
FieldEnvironmental Science
TopicOil Spill Detection and Mitigation
Canadian institutionsnot available
Fundersnot available
KeywordsOil spillArcticOceanographyEnvironmental scienceGeographyGeologyEnvironmental protection

Abstract

fetched live from OpenAlex

Understanding how spilled oil biodegrades and weathers is important for oil spill remediation. The conditions of the environment in which the spilled oil was deposited is one of the most important controls of the remediation processes of oil. In this study two different oil contaminated environments were investigated. First, 112 seafloor samples were examined from northern Gulf of Mexico to evaluate deposition of oil contaminants and thus, long-term effects following the Deepwater Horizon spill. The second study included beach sediments from the Baffin Island Oil Spill (1980; Canadian Arctic). Apart from the extreme environmental differences, the residence time of the deposited oil is also different, with the GoM sediments being collected up to 4 years after the spill, whereas the Arctic site was sampled 39 years after being contaminated. Despite the shorter remediation time the GoM oil is more altered than the oil from the intertidal zone of the Arctic.

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)0.000
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: Other · Consensus signal: none
Teacher disagreement score0.053
Threshold uncertainty score0.106

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0020.000
Scholarly communication0.0010.000
Open science0.0000.001
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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 head0.006
GPT teacher head0.175
Teacher spread0.169 · 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
GenreOther

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
Published2020
Admission routes1
Has abstractyes

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