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Lecture Maritime safety and security administration - Topic: Marine pollution

Pollution of the world's oceans is quickly becoming a major problem on Earth. We know very little about the effect that pollution has on the oceans but we continue to dispose of chemicals, sewage and garbage into it. This topic provides knowledge of marine pollution. | GOOD MORNING CLASS! 上午好学生们！ Shang wu hao xue sheng men! video Marine Pollution Problem: Pollution of the world's oceans is quickly becoming a major problem on Earth. We know very little about the effect that pollution has on the oceans but we continue to dispose of chemicals, sewage and garbage into it. Marine pollution "Introduction of man, directly or indirectly, of substances or energy into the marine environment (including estuaries) resulting in such deleterious effects as harm to living resources, hazard to human health, hindrance to marine activities including fishing, impairment of quality for use of sea-water, and reduction of amenities.” – GESAMP Definition 5 Impacts on living resources Hazards to human health Hindrance to marine activities Impairment of quality of seawater Reduction of amenities Loss of aesthetic beauty Impacts on the sensitive habitats General impacts Marine pollution Contd 6 Pollution in coastal waters • Coastal waters especially are highly affected by | GOOD MORNING CLASS! 上午好学生们！ Shang wu hao xue sheng men! video Marine Pollution Problem: Pollution of the world's oceans is quickly becoming a major problem on Earth. We know very little about the effect that pollution has on the oceans but we continue to dispose of chemicals, sewage and garbage into it. Marine pollution "Introduction of man, directly or indirectly, of substances or energy into the marine environment (including estuaries) resulting in such deleterious effects as harm to living resources, hazard to human health, hindrance to marine activities including fishing, impairment of quality for use of sea-water, and reduction of amenities.” – GESAMP Definition 5 Impacts on living resources Hazards to human health Hindrance to marine activities Impairment of quality of seawater Reduction of amenities Loss of aesthetic beauty Impacts on the sensitive habitats General impacts Marine pollution Contd 6 Pollution in coastal waters • Coastal waters especially are highly affected by pollution because they are: – Heavily used – Close to sources of pollution – Shallow-water bodies – Not as well circulated as the open ocean • Coastal pollution is made up of marine pollution and marine debris Sources of pollution Land-based sources Agricultural run-off Municipal and industrial wastes Sea-based sources Oceanic dumping Offshore oil spills 8 Point and Non-Point Sources Point source – refers to a single identifiable source of pollutants eg. effluent outfall Non-point source – refers to diffuse source of pollutants eg. Acid rain, dust storms NONPOINT SOURCES POINT SOURCES Urban streets Suburban development Wastewater treatment plant Rural homes Cropland Factory Animal feedlot Contd 9 Discrete vs. Chronic Pollution Discrete (short term) – eg. an oil spill, the effects of which diminish with time Chronic (long term) – eg. nutrient input, effluent discharge Types of pollution 10 Types of pollution Contd 11 Oil pollution Oil pollution is mostly used to describe marine oil