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Record W2126035353 · doi:10.1191/0309133302pp355ra

Permafrost mapping: a review

2002· review· en· W2126035353 on OpenAlexafffund
J A Heginbottom

Bibliographic record

VenueProgress in Physical Geography Earth and Environment · 2002
Typereview
Languageen
FieldEarth and Planetary Sciences
TopicClimate change and permafrost
Canadian institutionsGeological Survey of Canada
FundersNational Research Council CanadaInternational Permafrost Association
KeywordsPermafrostComputer scienceGeographic information systemSoftwareData miningRemote sensingEarth scienceCartographyDatabaseGeologyGeography

Abstract

fetched live from OpenAlex

Permafrost maps have developed over the last century from small line drawings showing the outer limits of the areas within which perennially frozen ground was known or supposed to exist, to large scale, multi-sheet, multi-faceted, complex earth-science documents. These show, in considerable detail, the estimated distribution of frozen ground, in terms of its spatial continuity, thickness, ground temperature and ground ice content. Other related geo-environmental information is commonly included along with the permafrost attributes. The key geocryological issues in permafrost mapping comprise definition, purpose, classification, data acquisition, and data storage and processing. The principal cartographic issues relate to map design, legend development and map production. The recent development of geographic information software (GIS) suitable for use on a desk-top computer allows the geocryologist to undertake many map compilation and production tasks directly. GIS software also allows the map compiler or map user to manipulate the data, layer by layer, and so create specialized maps for specific purposes. Computer storage and processing of permafrost data allows large volumes of data to be handled and, when combined with modelling techniques, allows these large volumes of data to be used in the compilation of maps. Integration of modelling techniques with GIS is a powerful tool for assessing the response of permafrost to a changing climate. Other research directions are noted.

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 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), Insufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Review · Consensus signal: Review
Teacher disagreement score0.962
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0020.001
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0040.001

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 head0.049
GPT teacher head0.266
Teacher spread0.217 · 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 teacher head, not a consensus.

Study designNot applicable
Domainnot available
GenreReview

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

Citations80
Published2002
Admission routes2
Has abstractyes

Explore more

Same venueProgress in Physical Geography Earth and EnvironmentSame topicClimate change and permafrostFrench-language works237,207