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Published byLynette O’Connor’ Modified over 9 years ago
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Chapter 1: Planet Ocean: A Historical Perspective
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I) Early Exploration Phoenicians are the first accomplished sea travelers in the West
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Polynesians were the first regular, long-distance, open ocean seafarers
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Greeks Pytheas Predicted tides by studying the moon
Figured out how far north or south one was by using the North Star BC
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Greeks Eratosthenes Calculated Earth’s circumference
Invented the first latitude / longitude system BC
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Greeks Aristotle 1st marine biologist Described many forms of sea life
BC
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Greeks Ptolemy 1st sphere map on flat paper
Improved latitude & longitude system BC
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Latitude & Longitude: Latitude Parallel lines running east / west
Equator = 0O Poles = 90O Above equator = North Below equator = South
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Latitude & Longitude: Longitude
Intersecting Lines that begin at one pole and end at other Prime Meridian = 0O Opposite side = 180O Right of PM = East Left of PM = West
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II) Middle Ages Vikings:
Raided, explored, & traded between 790 A.D Leif Eriksson discovers Vinland & North America 995 AD
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Arabs Voyaged to E Africa, SE Asia, & India Figured out wind patterns & currents (including monsoons)
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Chinese First people to understand magnetism & use compasses
Developed central rudders & watertight compartments
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III) European Voyages of Discovery
Columbus: Rediscovers America in 1492 1451 – 1506 AD
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Magellan: First person to sail around the world 1480 – 1521 AD
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IV) Beginning of Ocean Science
James Cook: Explored all the oceans and began making scientific observations Chronometer: clock that isn’t affected by waves, allowing one to accurately determine longitude
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B) Edward Forbes Dredged ocean floor & discovered new sea creatures
“Father of modern oceanography” 1815 – 1854 AD
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C) U.S. Exploring Expedition
AKA: Wilkes Expedition Explored the southern Atlantic & Pacific oceans, discovering Antarctica Included scientists & illustrators 1838– 1842 AD
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D) Matthew Maury “Father of Physical Oceanography”
The Physical Geography of the Sea Among 1st to envision worldwide patterns for surface winds and currents 1806– 1873 AD
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E) Charles Darwin Studied plankton & described the formation of coral reef atolls 1809 – 1882 AD
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Challenger Expedition
Gathered biological, chemical, geological & physical data Discovered Mid-Atlantic Ridge; Marianas Trench; over 4700 new species
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V) Modern Marine Biology
Marine Biological Laboratory at Woods Hole (Massachusetts) is established (1888)
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The Scripps Institution of Oceanography is established (La Jolla, CA - 1924)
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Meteor (1925-Germany) Atlantis (1931-USA)
Crossed Atlantic 14X, gathering biological, chemical, geological, & physical data Atlantis (1931-USA) 1st ship designed & built for ocean exploration
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Challenger II (1951-U.K.) Used SONAR to map ocean floor
WWII: for sub hunting Based on the detection of underwater echoes Allowed accurate mapping of oceanic floors
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V) Modern Marine Biology
Submersibles: William Beebe & Otis Barton develop bathysphere Dove over 2000 feet off Bermuda in 1932
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Submersibles: Deepest diving bathyscaphe
a) Trieste dives to bottom Challenger Deep (36000 feet)
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Hard Hat Diving Developed by Augustus Siebe
Good for underwater labor, limited for underwater research
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SCUBA: self contained underwater breathing apparatus
Developed after WWII by Emile Gagnan & Jacques Cousteau First time one could study directly in the marine environment
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Modern Scientific Ships (FLIP)
Submarines
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Satellites Remote Sensing
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Critter cams
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Remotely Operated Vehicles (ROV)
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Autonomous Underwater Vehicles (AUV)
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Global Positioning System (GPS)
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