Fate of diluted bitumen spilled in the coastal waters of British Columbia, Canada
| Autor: | Cynthia A. Wright, Charles G. Hannah, Charles W. Greer, Rich Pawlowicz, Sophia C. Johannessen, Kenneth Lee, Thomas King |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Strait of Georgia Fjord 010501 environmental sciences Aquatic Science oil Oceanography Convergence zone 01 natural sciences Sink (geography) Rivers dilbit Seawater 0105 earth and related environmental sciences particles Shore geography geography.geographical_feature_category British Columbia North coastal British Columbia 010604 marine biology & hydrobiology Dilbit Storm Estuary Pollution Hydrocarbons Salinity diluted bitumen Environmental science Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Marine Pollution Bulletin. 150:110691 |
| ISSN: | 0025-326X |
| DOI: | 10.1016/j.marpolbul.2019.110691 |
| Popis: | There is public concern about the behaviour of spilled diluted bitumen (dilbit) in marine and estuarine waters. We provide a preliminary assessment of the results of laboratory experiments and models, in the context of environmental conditions in the coastal waters of British Columbia. Most dilbit spilled within this region would likely float at the surface and be transported to shore by winds and currents. Fresh dilbit is too light to sink in coastal waters. Highly weathered dilbit could sink where salinity is less than 14, typically only near river mouths and in the top 1–3 m of fjords after heavy rainfall. Subsurface plumes of weathered dilbit could re-emerge at the surface. Sinking oil-particle aggregates are unlikely to form in coastal waters. However, dilbit could be entrained below the surface by wave mixing during storms and to depths of 150 m by coherent mixing in the Haro Strait tidal convergence zone. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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