| Téléchargement | - Voir le manuscrit accepté : Characterization of ice coverage in the St. Lawrence River using satellite imagery and an operational ice status index (PDF, 4.0 Mio)
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| Auteur | Rechercher : Sudom, Denise1; Rechercher : MacMillan, Corwin; Rechercher : Soleymani, Armina; Rechercher : Qu, Yifan; Rechercher : Scott, K. Andrea |
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| Affiliation | - Conseil national de recherches Canada. Génie océanique, côtier et fluvial
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| Format | Texte, Article |
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| Conférence | 23rd Workshop on the Hydraulics of Ice Covered Rivers, June 9-12, 2025, St. John's, Newfoundland and Labrador, Canada |
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| Sujet | river ice; satellite imagery; freeze up; break up; St. Lawrence River |
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| Résumé | The St. Lawrence River is part of an important international shipping route, with numerous shoreline communities and major infrastructure such as dams and hydroelectric power generation stations. In winter, ice is a crucial consideration in water management decisions on the upper part of the St. Lawrence, from Lake Ontario to Montreal. The water management board and hydroelectric companies closely monitor river ice conditions at two key locations, Lake St. Lawrence and Beauharnois Canal. River flow is usually reduced to encourage the formation of a stable ice cover and prevent problematic ice jams; once this cover forms, flow may be increased. Since the year 2000, detailed observations have been made on ice cover presence and stability, and a numeric ice status index has been recorded for each day of the ice season. The availability of remotely-sensed data, such as satellite imagery, affords another way to monitor ice conditions. Satellite-based optical imagery was used to classify pixels on the St. Lawrence River as either ice or water. The percent coverage of the surface by ice was then calculated over each area for images from 2013 to 2022. This satellite-derived ice coverage was compared with the ice status indicator timeseries, and preliminary correlations were established. Several machine-learning methods for synthetic aperture radar (SAR) imagery analysis were also tested and summarized. |
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| Date de publication | 2025-06-09 |
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| Maison d’édition | Committee on River Ice Processes and the Environment (CRIPE) |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | b00ea7e2-d0a3-46d8-b242-bfc5b3c57fdd |
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| Enregistrement créé | 2025-06-25 |
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| Enregistrement modifié | 2025-06-30 |
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