Notice bibliographique
Résumé
In summer, the temperature difference between Hamilton Harbour and Lake Ontario drives a two-layer exchange flow through the Burlington Ship Canal. Warmer Hamilton Harbour water forms the upper layer in the canal before floating out onto the surface of Lake Ontario, while cooler lake water forms the bottom layer in the canal prior to sinking into the harbour's hypolirnnion. During periods of exchange flow, large amounts of water are exchanged between the harbour and the lake, thus an understanding of this phenomenon is necessary to determine the water quality of either body. In the summer of 1996, an extensive field study was conducted to obtain a better understanding of exchange flow dynamics in the Burlington Ship Canal. Acoustic Doppler Current velocity Profiler (ADCP) and Conductivity-Temperature-Depth (CTD) profiles measured during 5 drifts along the canal from a boat on July 25, 1996 were analyzed in the present study. Differential Global Positioning System (DGPS) was employed to determine surface location within the canal. Density in the canal was calculated from temperature and conductivity using a lakewater equation of state. A hyperbolic tangent function was fit to each of the velocity and density profiles in the ship canal. This fit provided a convenient way of characterizing the density and velocity of each layer, the interface location, and thickness of the interface. Flows into and out of Hamilton Harbour were estimated by integrating the velocity profiles with respect to depth. By forcing control locations at the ends of the Burlington Ship Canal, a line was calculated as an initial estimate of the interface profile using the measured flow for each layer and the density difference. As a first approximation, the line provides a reasonable fit to the data. However, unsteadiness in the flow limits the validity of the concept of hydraulic control and other aspects of steady 2- layer hydraulics. Predictions of the interface fit should be extended to account for unsteady effects. In addition, barotropic and frictional effects should be considered. All of the drifts, except for one where mixing was caused by the passage of a large ship through the canal rather than exchange flow, exhibit similar mixing patterns. The bulk Richardson number associated with velocity, J8 = 0.30, and the bulk Richardson number associated with density, Jη = 0.25. These values compare very favourably with published values of J from theoretical, numerical and experimental work. In the Burlington Ship Canal, mixing may be predicted once the background flow is known. Unfortunately, steady, 2-layer hydraulics cannot provide an accurate estimate of the background flow. [Certain scientific formulae used in this abstract could not be reproducted.]
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 | 0,000 | 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 | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 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 ».