Oceans
Oceans
Jan 02, 2016
Oceans. Oceans cover 70% of the planet’s surface. Ocean circulation. Currents. Ocean circulation. Surface currents. Clockwise in northern hemisphere. Ocean circulation. currents. Ocean circulation. Currents Oceans are a gigantic heat sink. currents. Oceans. Weather generator. - PowerPoint PPT Presentation
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Oceans
Oceans cover 70% of the planet’s surface
Ocean circulation
• Currents
Ocean circulationSurface currents
Clockwise in northern hemisphere
Ocean circulation
• currents
Ocean circulation
• Currents
• Oceans are a gigantic heat sink
currents
Oceans
• Weather generatorWeather generator
El Nino
El Nino
ENSO
• El Nino/Southern Oscillation~
ENSO
OceansOceans
• Weather generatorWeather generator
• We are far from understanding how We are far from understanding how the oceans create our climatethe oceans create our climate
• NOAANOAA
National Oceanic and Atmospheric National Oceanic and Atmospheric AdministrationAdministration
Antarctica
The Madrid ProtocolThe Madrid Protocol , 1990, 1990a natural reserve dedicated to peace a natural reserve dedicated to peace and societyand society
Antarctica
Antarctica
Antarctica
West Antarctica rests on deep bedrockWest Antarctica rests on deep bedrockIf it detaches, sea level will riseIf it detaches, sea level will rise 5 - 6 meters5 - 6 meters
Antarctica
• Ice CapIce Cap
built up over 100,000 years from snowfallbuilt up over 100,000 years from snowfall
slow moving ice “rivers”slow moving ice “rivers”
Antarctica
• Sea-iceSea-ice
sea freezes in wintersea freezes in winter
melts back in summermelts back in summer
and breaks up into pack-iceand breaks up into pack-ice
Antarctica
• Pack-ice
reflects 80% of sunlightreflects 80% of sunlight keeping Antarctica coldkeeping Antarctica cold
OceansOceans
• Weather generatorWeather generator
• Transport surface Transport surface : Voyages: Voyages
Ancient Seafarers
Ancient Seafarers
• Austronesian mariners
Ancient Seafarers
Ancient Seafarers
• Austronesian mariners
Heyerdahl has seen the pollution of the oceans up close
tartar
Heyerdahl has seen the pollution of the oceans up close
tar
plastics
Oceans
Jaques Cousteau
Oceans
• Both Cousteau & Heyerdahl became ardent environmentalists
• “The oceans are ill”
Oceans• e.g. abalone
Oceans• e.g. abalone
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