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10.1016/s0967-0653(98)81278-7

2000· article· en· W89210043 on OpenAlexvenueno aff
Alan Gunton

Bibliographic record

VenueTime to knit · 2000
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicCoastal and Marine Dynamics
Canadian institutionsnot available
Fundersnot available
KeywordsGeologyIntertidal zoneStormOceanographyBeach morphodynamicsPlageSea levelGeomorphologyShoreSediment transportSediment

Abstract

fetched live from OpenAlex

The west coast of Jersey is a high energy, macro-tidal environment, which experiences contrasting beach morphology between storm and non-storm conditions, giving rise to an apparent seasonal differentiation between 'summer' and 'winter' beach states, as recorded in numerous previous studies (SHEPARD and LAFOND, 1940; DUBOIS, 1988). In the summer, long periods (measured in weeks) of low wave energy levels give rise to a series of low amplitude (0.5 m) ridges occurring across the inter-tidal zone, with scouring apparent at the base of the wall. The initial onset of storm conditions, produces a rapid change in morphology, occurring in a matter of days, with ridges planed down and coarse material, in the pebble and shingle size fraction, transported landwards, to form a steep, protective beach at the wall's base. The return to summer morphology is a much slower process, occurring over a matter of months and frequently being disturbed by further increases in energy levels. Although environmental conditions would indicate that the winter storm period was most vulnerable to sea wall failure, the beach response actually results in greatest stability at this time. Correlation analysis revealed that the factors most closely related to beach evolution in the inter-tidal zone were wave height, wind speed and wind direction. Steepness, although widely reported as being a significant variable inducing beach change (SALLENGER et al., 1985), appears to be largely unrelated to morphological evolution at this site. In the vicinity of the wall, in contrast to the remainder of the beach, the height of High Water (HW) was shown to become the predominant control on beach levels. Although large waves were responsible for the initial onshore transport of the pebble fraction at the start of the storm period, the subsequent impact of this variable was secondary to tidal influence. A different beach response to the tidal cycle was observed between the winter and summer beach morphology. In the summer, when sand levels were low, the move towards spring tides encouraged erosion. However, high levels observed during the winter season, were associated with accretion on the move from neap to spring tides.

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)0.002
metaresearch head score (Gemma)0.002
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.009
Threshold uncertainty score0.012

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.002
Meta-epidemiology (narrow)0.0050.001
Meta-epidemiology (broad)0.0030.002
Bibliometrics0.0040.002
Science and technology studies0.0030.003
Scholarly communication0.0060.009
Open science0.0050.005
Research integrity0.0090.004
Insufficient payload (model declined to judge)0.9920.993

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 head0.005
GPT teacher head0.149
Teacher spread0.145 · 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; the direct Gemma label and the distilled Codex classifier agree on what is shown here.

Study designNot applicable
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

Citations3
Published2000
Admission routes1
Has abstractyes

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