global ocean
DESCRIPTION
GLOBAL Ocean. 72% of Earth’s surface. Arthur C. Clarke. “How inappropriate to call this planet Earth, when clearly it is Ocean.”. 97% of all the water on Earth. Pacific Ocean. Largest, deepest oldest ocean Cover 1/3 rd of Earth’s surface Average depth- 4.3 km - PowerPoint PPT PresentationTRANSCRIPT
GLOBAL Ocean
72% of Earth’s surface
Arthur C. Clarke
•“How inappropriate to call this planet Earth, when clearly it is Ocean.”
97% of all the water on Earth
Pacific Ocean
• Largest, deepest oldest ocean• Cover 1/3rd of Earth’s surface• Average depth- 4.3 km• Natural resources: oil, gas, metal nodules,
sand, gravel , fish• Over 25 000 islands
Pacific Ocean
Pacific Ocean
• Deepest sea floor in the world
• 10 911 meters• Deep sea trench for by
the plate tectonic movement called SUBDUCTION
Atlantic Ocean
• 2nd largest, youngest ocean
• Contains oil, gas, placer deposits, sand , gravel, precious stones, metal nodules, placer deposits, fish marine mammals
• Icebergs a natural hazard• Piracy occurs
Atlantic Ocean
• Puerto Rico trench is the deepest part, 8 650 meters deep• Many rivers flow into
the A.O.• Few islands
Atlantic Ocean
Also known for:• Broadest continental shelf• summer and fall hurricanes• The Bermuda Triangle• The Mid- Atlantic Ridge• The shipwreck of the Titanic
Indian Ocean
• 3rd largest , warmest, saltiest ocean• Natural resources include oil, gas, fish ,shrimp,
sand, gravel, placer deposits, metal nodules• High risk of piracy• Known for strong, shifting monsoonal flow of
wind and water
Indian Ocean
• Deepest part is the JAVA Trench, 7 258 m deep
Southern Ocean
• Runs from the coast of Antarctica to 60⁰S
• Very deep, between 4000 – 5000 m
• Large and possible giant oil and gas fields, Mn nodules, sand, gravel, squid, whales, seals, krill
Southern Ocean
• South Sandwich Trench is the deepest part, 7235 meters
• Huge icebergs
Arctic Ocean
• Smallest ocean• Natural resources
include sand, gravel, placer deposits, oil , gas, placer deposits, metal nodules, fish, marine mammals
• Fragile ecosystem• Thinning ice
Arctic Ocean
• mostly ice covered• Mainly surrounded by land• Shallowest ocean• Many icebergs
SEAS
• A large body of salt water, smaller than an ocean that may be partly or nearly surrounded by land
• Examples: Sargasso Sea Caribbean Sea
Mediterranean Sea• Pencil in # in green
GULFS
• An area of water bordering on and lying within a curved coastline, usually smaller than a SEA but larger than a BAY
• Examples : Gulf of Mexico Gulf of Alaska Persian Gulf• Pencil in # in orange
BAYS
• An INLET of the OCEAN or part of the OCEAN bordering on land and partly surrounded by land
• Examples : Chesapeake Bay Bay of Bengal Hudson Bay• Pencil in # in red/pink
STRAITS
• A passageway of water connecting two large bodies of water
• Examples: English Channel Davis Strait Korea Strait• Pencil in # in purple