History of Oceanography Lauren Sovine per 3

By lauren_sovine
  • 165

    Ptolemy

    Ptolemy
    summaryPtolemy was the most influential of Greek astronomers and geographers of his time. He propounded the geocentric theory that prevailed for 1400 years.
  • 325

    325 BC Pytheas

    325 BC Pytheas
    Astronmical measurements and latitudes.
  • Jan 6, 1400

    Prince Henry the Navigator

    Prince Henry the Navigator
    Prince Henry the Navigator (Dom Henrique) was the son of King João of Portugal, born in 1394. He is most famous for the voyages of discovery that he organised and financed, which eventually led to the rounding of Africa and the establishment of sea routes to the Indies. Henry was also a very devout man, and was Governor of the Order of Christ from 1420 until his death in 1460.
  • Jan 6, 1513

    Ferdinand Magellan

    Ferdinand Magellan
    "In 1513 the Spanish
    captain, Ferdinand
    Magellan, circumnavigated
    the globe through a passage
    way at 52° S latitude now
    called the Straights of
    Magellan."

  • Benjamin Franklin

    Benjamin Franklin
    Dive and DisciveryMade and comply good observations of ocean currents off the US East Coast.

  • James Cook

    James Cook
    British Explorer
    He used Astronomy and
    figured out Longitudes and
    published his findings in the royal Society’s
    Philosophical transactions for 1767

  • Matthew Maury

    Matthew Maury
    britannicaU.S. naval officer, pioneer hydrographer, and one of the founders of oceanography.
  • Period: to

    Challenger Expedition

    Dive and Discover "It was the first expedition organized specifically to gather data on a wide range of ocean features."

  • SONAR

    SONAR
    Ocean Explore SOund NAvigation and Ranging—SONAR—is used to find and identify objects in water. It is also used determine water depth (bathymetry). Sonar is applied to water-based activities because sound waves attenuate (taper off) less in water as they travel than do radar and light waves.
    Sonar was first used during World War I to detect submarines. By the 1920s, the U.S. Coast and Geodetic Survey—the precursor

  • Bathysphere

    Bathysphere
    Britannaica"A spherical steel vessel for use in undersea observation, provided with portholes and suspended by a cable from a boat. Built by the American zoologist William Beebe and the American engineer Otis Barton, the bathysphere made its first dives in 1930. On June 11, 1930, it reached a depth of 400 m, or about 1,300 feet, and in 1934, Beebe and Barton reached 900 m, or about 3,000 feet."
  • Period: to 276

    276-195 BC

    It can be said that Eratosthenes is most widely known as a famous Greek mathematician. What most people probably do not know is that Eratosthenes is not only a famous mathematician but also a well known geographer, astronomer and historian