OCS 1005 : Oceanography Exam 1
15 Mar 2019
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Document Summary
Polynesian migration in the pacific ocean (20,000 years ago) Explored the polynesian triangle (hawaii, new zealand, easter islands) Used the sun, stars, birds, waves, and winds to navigate. Systematic study of the ocean and celestial navigation began at the library of alexandria. Eratosthenes of cyrene: 2nd librarian at alexandria, first to calculate the circumference of the earth. Vikings (only european contribution during the dark ages) One mast shifts that could land in shallow water. Chinese (set out in 1400"s to show china"s wealthcocky bitches) Central rudder, water-tight compartments, multiple mast ships, and magnetic compass. 317 ships and 37,000 men on over 7 voyages. Silk road (spice trade route) was blocked by ottomans. Found a sea route around africa and triggered the age of discovery. Age of discovery (europeans explored the world via sea during the renaissance) Henry the navigator (portugal)- explored the west coast of africa and established a center for seafaring in order to mount new expeditions.
