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Presentation Fate of spilled oil in the marine environment
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Article The Deepwater Horizon oil spill: environmental fate of the o...
Article Environmental Implications of Oil Spills from Shipping Accidents
Article ENVIRONMENTAL IMPACTS OF MARINE OIL SPILL; A CASE STUDY OF D...
Conference Paper Oil Spill in Marine Environment: Fate and Effects
Negative impacts on birds, marine ecosystem, and also on the hydrological cycle. it is a well-known threat to biodiversity and a significant environmental concern.
Dr. Vinaya Tari
death many fish and add mercury in water can cause enter to gill of fish and when human feed fish cause headache and some thing like that on the other hand lead to bad effect in marine ecosystem
Hypoxia and anoxia to both benthic and coastal organism. loss of locomotion ability in some marine vertebrates, impede growth, loss of reproductive ability and sometimes mortality of invertebrates especially mollusc species.
In many oil spills from ships, the type of oil and weather conditions as well as the state of the ocean are the factors that are most likely to determine the behavior of the oil in the marine environment.
Petroleum falls into two general categories: heavy and light. If we consider the behavior of these oils in the environment, these categories correspond to persistent (heavy oil) and non-persistent (light) hydrocarbons. During an oil spill in the marine environment, many chemical and physical changes occur which are caused by the climatic conditions and the state of the ocean at the time of the spill and which determine the behavior of the hydrocarbons in the environment and , in the end, what they become
i. spreading ii. emulsification iii. evaporation iv. oxidation v. dissolution vi. biodegradation vii. dispersion and viii. sedimentation
It is more on the negative it renders the water undrinkable if it a source of drinking water. It also makes the water unsuitable for use in terms of other domestic purposes except it is been purified. It kills all forms of aquatic life by creating a DO imbalance in the water. The birds that inhabit there will find it difficult to fly because it's wings will be socked in oil. Fishing activities within such water will be affected, other human activities recreation, swimming etc will be reduced. It will affect the income generation from such environment as economic activities will be hampered.
Major oil spills are spectacular and tragic events which mark the history of the maritime transport of hydrocarbons. Several major disasters have occurred, by observing the appearance of the oil film and measuring its thickness, it is possible to estimate the amount per square meter. If the polluted surface is known (by aerial photography). It is possible to estimate the total quantity spilled8. The calculation in tonnes per square meter is carried out with an oil density of 0.84 (density of a refined product such as gas oil, the density of crude oil reaches 0.97). Oil spills are a real trauma for the affected regions. These pollution have an ecologicaland ecotoxicological consequences, economic and health impact. They are dangerous for the marine environment, by seriously disturbing marine flora and fauna. For the economic consequences it's affect the tourism industry , fishing and navigation activities.
It does depend on the share size of the spill.. impact can be negligible to very outstanding in terms of lethal consequences.
Impact should be examined in line with the native habitat or biological importance of the area, spill size and thickness, metocean conditions influencing the marine environment.
The crude fraction affects the benthic community. The oil film cuts off oxygen supply and adversely impact the plankton and subsequent food chain