History and Plate Tectonics Flashcards
Early Explorers and Trade:
- Focused on shipbuilding and coastal piloting _____?
- North Africa, excellent sailors; explored the Mediterranean, traded with Britain and they may have circumnavigated Africa around 600 BC_____?
- Explored the Indian Ocean ___?
- Explored the Pacific Ocean ____?
Egyptians, Phoenicians, Arabs, Polynesians
- Colonized islands in the Pacific Ocean (Hawaii, Tahiti, Easter Islands, etc.)
- Navigated with stars, sun, moon, behavior of marine organisms, ocean properties.
- Sailed in large canoes
- Made “stick charts” from bamboo and wood to diagram islands
Polynesians
_____ were first real European explorers. They could identify where they were by the type of seaweed floating, types of seabirds flying, presence of whales and other sea animals.
Vikings
- First maps were made of this sea
several civilizations navigated here - Greeks were the first to sail out of sea into ocean; they observed currents
- Systematic study of ocean began at Library of Alexandria
- _____? determined Earth’s circumference to be 25,000 miles; became chief librarian
Mediterranean Sea, Eratosthenes
- Stimulated by the lust for resources and better trade routes.
Age of Discovery (1400s-1800s)
1487: Who rounded Cape of Good Hope? He is a Portugese explorer, first European to reach Indian Ocean from Atlantic Ocean
Bartholomeu Dias
1498: Who continued route of Dias and mapped route to Indian Ocean?
Vasco de Gama
1451-1506: Who made voyages across Atlantic Ocean and thought he found islands in Asia? He is Italian but citizen of Spain.
Christopher Columbus
1513: Who found the Pacific Ocean?
Balboa
1519: ____?, led by Portuguese _____?, circumnavigates the world; 3 of 5 ships are lost on voyage; _____? is killed in Philippines, then del Cano takes over
Victoria, Ferdinand Magellan
1768: English _____? charts Australia region aboard Endeavor; prevents scurvy by getting sailors enough Vitamin C. Has 3 major voyages mapped South Pacific, coasts of New Zealand, Australia and N America, “discovered” Hawaiian Islands
James Cook
1772: Cook charts islands of Pacific with ship _____?; killed by natives of Hawaii
Resolution and Adventure
1728: _____? made a ______, a timepiece that is precise and accurate enough to be used as a portable time standard; it can therefore be used to determine longitude by means of celestial navigation which allowed navigators to determine longitude on ships.
John Harrison, Marine Chronometer
1769: ______ and ______ map the Gulf Stream
Ben Franklin, Tim Folger
1800s German naturalist, contributions in geophysics, meteorology, and oceanography.
Humboldt
1842: _______? dubbed the “Father of Oceanography”, systematically collected wind and current data; charted North Atlantic. In 1847, he produced first bathymetric, wind and current chart
of the North Atlantic.
Matthew Fontaine Maury
1831: _____? sails aboard HMS Beagle as the naturalist; accurately described atoll formation. Created the Subsidence theory of coral reef formation (atolls) & origin of species. He is a English naturalist, geologist and biologist, best known for his contributions to the science of evolution. His theory of evolution states the principle by which each slight variation [of a trait], if useful, is preserved” called _____?
Charles Darwin, Natural Selection
- First true oceanographic research expedition
- Renovated a British corvette, a small warship
- Discovered Mariana Trench; deepest spot was later given the name ____?
- Discovered mid-ocean ridge and collected water data
- Led by ______? and _____?
HMS Challenger, Challenger Deep, Charles Wyville Thomson and John Murray
- Comprehensive scientific expedition
- Ship refitted with laboratories, winches, and sounding scope
The Challenger Expedition
Other explorations after Challenger:
(6)
- Norway – explored North Atlantic with Voringen (1876-78)
- Germany – studied Baltic and North Sea in SS Pomerania (1871-72) and Crache (1881-1884)
- France – financed cruises by Travailleur and Talisman (1880s)
- Austria – worked in Mediterranean and Red Seas in Pola (1890s)
- US – circumnavigated earth with US Enterprise (1883 and 1886)
- Italy and Russia – also circumnavigated (1886 & 1889)
Oceanography Pioneers
- Victor Hensen (1800s): plankton studies
- Alexander Agassiz (1800s): studied corals aboard the Albatross
- Fridjtof Nansen (1800s): drifted in ice with the Fram near the North Pole
- Walfrid Ekman (1900s): Scandinavian who studied physical oceanography
- Robert Peary (1909) reaches North Pole
- Roald Amundsen (1911) reaches South Pole
This expedition introduced modern optical and electronic equipment (echo sounder)
Meteor Expedition (1925)
This expedition collected data about sea floor; started with Glomar Challenger (1968-83), then JOIDES Resolution and Chikyu (“Planet Earth”)
Ocean Drilling Program
15 year expedition to Mid-Atlantic Ridge between South America and Africa drilling core samples
Deep Sea Drilling Program