Intro to Oceanography
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Transcript of Intro to Oceanography
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Intro to Intro to OceanographyOceanography
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How does it differ from Marine Biology?
Study of the ocean, its surroundings, and life within it.
Marine bio studies marine organisms’ anatomy, physiology, behavior; more individualistic.
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1.Pacific2.Atlantic3.Indian4.Arctic5.Southern or
Antarctic Ocean
The five principal oceans
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Indian
Southern or Antarctic
Artic
Pacific
Atlantic
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Ocean Area (square miles) Average Depth (ft) Deepest depth (ft)
Pacific Ocean
64,186,000 15,215 Mariana Trench, 36,200 ft deep
Atlantic Ocean
33,420,000 12,881 Puerto Rico Trench, 28,231 ft deep
Indian Ocean
28,350,000 13,002 Java Trench, 25,344 ft deep
Southern Ocean
7,848,300 sq. miles (20.327 million sq km )
13,100 - 16,400 ft deep (4,000 to 5,000 meters)
the southern end of the South Sandwich Trench, 23,736 ft (7,235 m) deep
Arctic Ocean
5,106,000 3,953 Eurasia Basin, 17,881 ft deep
Comparison of Oceans Size
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The Seven Seas?
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Physical OceanographyPhysical Oceanography
How and why ocean currents flow, air-sea interactions such as the generation of waves by wind.
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Chemical OceanographyChemical Oceanography
Composition of sea water and the processing controlling and altering its
composition, including marine pollution
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Organisms that live in the ocean and their relationship to the environment
Biological OceanographyBiological Oceanography
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Study of rock structure in the ocean basin, properties of rocks such as
magnetism, occurrence of earthquakes.
Geological OceanographyGeological Oceanography
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Design and installation of oceanographic instrumentation and vehicles
Ocean EngineeringOcean Engineering
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NOAA Weather Buoy/ Tsunami
Global/Local MonitoringGlobal/Local Monitoring
Chlorophyll
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Disciplinary Connections
BIOLOGY
BIOCHEMISTRY
OCEANOGRAPHYPHYSICS
GEOLOGY
CHEMISTRY
GEOPHYSICS
BIOPHYSICS
GEOCHEMISTRY
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Average depth of ocean- 4000m
Average temperature- 39oF (3.9oC)
Age of ocean- 4 billion years old
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Covers 71% of the Earth’s surface
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Amazon River
Average salinity- 35 o/oo
Dead Sea
Jordan
Israel
Dead Sea
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Tallest Mountain: Hawaii's Mauna Kea rises 10,203 m (33,476 ft) from base to peak. Everest is only 8,848m.
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Deepest spot- Marianas Trench (10,912m)
1960- Walsh & Piccard
Marianas Trench10,912 m
Mt Everest 8,863 m
http://video.nationalgeographic.com/video/environment/habitats-environment/habitats-oceans-env/cameron-how-deep/
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Millions of Years Before Present
Age of the ocean basin: 200 my old
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It formally began in the 1800’s.
Previously, it was thought that the deep ocean had no life below 550 m(Edward Forbes- Azoic Theory).
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Prior to then:
1500 B.C., Phoenicians were skilled sailors and traded goods
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Migration Routes of Polynesia
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An early stick chart from Micronesia shows the waves and currents around the islands which are represented by shells.
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Voyage of Columbus (1492) and Magellan (1519)
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Cook (1700’s)- sailed twice around the world
1st European to visit Hawaii
Cook
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Humboldt (1800’s)- German naturalist, contributions in geophysics, meteorology, and oceanography
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Voyage of the HMS BeagleVoyage of the HMS Beagle
Darwin (1831):
•Subsidence theory of coral reef formation (atolls) & origin of species
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Ben Franklin (1770’s)- mapped the Gulf Stream
1996
1786
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• collected thousands of biological and sea bottom samples
• traveled in every ocean except arctic• cruise directed by Charles Wyville Thompson• 362 stations, 715 new genera, 5000 new
species• discovered Mariana
Trench and Mindarniad (34,000 ft deep)
Voyage of the HMS Challenger (1872-1876)
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Voyage of the HMS Challenger (1872-1876)
HMS Challenger's Chemical Laboratory
Deep sea Collections
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Late 19th century – early 20th century:
•Founding a number of important marine laboratories, including coastal labs and open ocean labs.
Founded 1903
Founded 1930
1888
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Meteor Expedition (1925)- introduced modern optical and electronic equipment (echo sounder)
Recent:
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Glomar Challenger (1968)- drilling for deep sea sediments
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Rachel Louise Carson (1907-1964)
Marine biologist at U.S. Bureau of Fisheries & Fish & Wildlife Service
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Jacque Cousteau (1910-1997) Navy officer, explorer, film maker, inventor of scuba (1947)
"From birth, man carries the weight of gravity on his shoulders. He is bolted to the earth. But man has only to sink beneath the surface and he is free.”
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Bob Ballard (1942-)Navy officer, explorer, film maker
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Inquiry1. The 4 major disciplines of oceanography are
_____.2. The tallest mtn in the world is____.3. The ave. depth of the ocean is ____.4. What are modern and ancient ways to
navigate?5. Who discovered the Marianas trench and how
was it done?6. Who traveled to it’s depths?7. What was Rachael Carson known for?