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Record W2890408470 · doi:10.58088/9x46-n738

Sea ice transport through Nares Strait between 2003 and 2012

2024· dissertation· en· W2890408470 on OpenAlex
Patricia A. Ryan

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueLibrary, Museums and Press - UDSpace (University of Delaware) · 2024
Typedissertation
Languageen
FieldSocial Sciences
TopicArctic and Russian Policy Studies
Canadian institutionsnot available
Fundersnot available
KeywordsOceanographySea iceGeographyGeologyFisheryBiology

Abstract

fetched live from OpenAlex

This dissertation focuses on sea ice observations in Nares Strait between 2003 and 2012. Ice transported via the channel contributes to freshwater flux through the Canadian Arctic Archipelago (CAA). Nares Strait, which forms the eastern boundary of the CAA, is second only to Fram Strait for volume outflow from the Arctic basin. Flow through the channel is described by two regimes. The distinction between these is the presence or absence of a land-fast ice bridge blocking ice transport. During the beginning and end of this study, ice bridges form each year and last for 3 to 6 months. However, ice flows virtually uninhibited for four years beginning in 2006. Data gathered from ice profiling sonars (IPS) moored in the channel are used to measure ice draft. Ice is found to be thicker in the western channel and to have highest velocity in the central channel. The statistical distribution of ice is assessed at seasonal and inter-annual scales temporally. Whereas ice in the Arctic Basin has been thinning, thick multi-year ice continues to flow through Nares Strait. With a goal to estimate ice volume flux through the channel, use of a steady state semianalytic channel flow model to supplement spatial and temporal gaps in ice velocity data is evaluated. Specifically, its ability to reproduce geostrophic flow characteristics and surface velocities in a cross-section of Nares Strait is assessed by comparison to well-resolved observational data. Surface forcing due to winds, the presence of mobile ice and land-fast ice cover conditions are implemented in the model. In order to replicate ice velocity at the water surface, the model requires extreme values for viscosity and amplified drag coefficients. A time series of ice flux is finally derived. Annual ice volume transport through Nares Strait averages 171±62 km3 when an ice bridge blocks the channel as compared to 472±126 km3 when ice flows freely year-round. Thus, Nares Strait transports between 6 and 21% of the volume of ice transported by Fram Strait.

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.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Other · Consensus signal: none
Teacher disagreement score0.537
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0010.001
Scholarly communication0.0000.001
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 head0.022
GPT teacher head0.261
Teacher spread0.239 · 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