Notice bibliographique
Résumé
Between 1996 and 2009 several different vessels conducted mutibeam surveys in the Bay of Fundy. Removal of the tidal effect and the establishment of a vertical reference were the most challenging aspects of the data reduction process. Due to the tidal range (8 to 16 metres) these effects must be removed in order for the results to be used effectively. Simply establishing gauges and measuring tides is extremely challenging, which makes this environment ideal for the use of GPS heights. Surveys conducted in 2007, 2008 and 2009 observed GPS heights during multibeam data collection. Surveys conducted prior to 2007 relied on a combination of tide gauge observations and predicted tides. The mandate for this project was to reduce the 2007 to 2009 surveys to a common Mean Sea Level (MSL) datum, and to try to incorporate surveys conducted prior to 2007. GPS heights from multibeam surveys conducted by the Creed, Matthew, Plover and Pipit in 2007, 2008 and 2009 were used to remove tidal effects and establish the vertical datum. GPS height observations were evaluated with respect to the Saint John tide gauge. GPS Tides were edited to remove sections where high-accuracy GPS solution was not available. Depths were determined relative to the International Terrestrial Reference Frame (ITRF), as established by the GPS observations. Lines where GPS heights were not available were removed from the process. Depths from each survey were used to create regular gridded surfaces at a 5X5 metre resolution. All surfaces were compared to ensure consistency in overlap areas and combined into a single surface. Three surveys conducted by the Creed prior to 2007 (without GPS heights) were included in the final surface. These included surveys conducted in 1996, 1999 and 2006. Initial tidal references were derived from predicted tides. Surfaces derived from these tidal datums were adjusted to the ITRF97 (1997 epoch) reference through a geoid-to-ellipsoid model (Canadian Spatial Reference System [CSRS] NT2). These surfaces were then compared to 2007-2009 surfaces where overlap occurred. Biases between the GPS derived ITRF surfaces and the MSL shifted surfaces ranged between 0.15 to 0.45 m. Sea Surface topography was not included in the shifting and will be included in the bias value. The standard deviation (1sigma) ranged between 0.6 and 1.6 metres. The high standard deviations can be attributed to the tidal model (Scotia Shelf) used to derive the predicted tides. Surveys conducted by the UNB OMG using the Heron were also incorporated into the final project.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».